Array.CreateInstance Method
Definition
Important
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Initializes a new instance of the Array class.
Overloads
| CreateInstance(Type, Int32) |
Creates a one-dimensional Array of the specified Type and length, with zero-based indexing. |
| CreateInstance(Type, Int32[]) |
Creates a multidimensional Array of the specified Type and dimension lengths, with zero-based indexing. The dimension lengths are specified in an array of 32-bit integers. |
| CreateInstance(Type, Int64[]) |
Creates a multidimensional Array of the specified Type and dimension lengths, with zero-based indexing. The dimension lengths are specified in an array of 64-bit integers. |
| CreateInstance(Type, Int32, Int32) |
Creates a two-dimensional Array of the specified Type and dimension lengths, with zero-based indexing. |
| CreateInstance(Type, Int32[], Int32[]) |
Creates a multidimensional Array of the specified Type and dimension lengths, with the specified lower bounds. |
| CreateInstance(Type, Int32, Int32, Int32) |
Creates a three-dimensional Array of the specified Type and dimension lengths, with zero-based indexing. |
CreateInstance(Type, Int32)
- Source:
- Array.cs
- Source:
- Array.cs
- Source:
- Array.cs
public:
static Array ^ CreateInstance(Type ^ elementType, int length);public static Array CreateInstance (Type elementType, int length);static member CreateInstance : Type * int -> ArrayPublic Shared Function CreateInstance (elementType As Type, length As Integer) As ArrayParameters
Returns
A new one-dimensional Array of the specified Type with the specified length, using zero-based indexing.
Exceptions
elementType is null.
elementType is not a valid Type.
elementType is not supported. For example, Void is not supported.
-or-
elementType is an open generic type.
length is less than zero.
Examples
The following code example shows how to create and initialize a one-dimensional Array.
using namespace System;
void PrintValues( Array^ myArr );
void main()
{
// Creates and initializes a one-dimensional Array instance of type Int32.
Array^ my1DArray = Array::CreateInstance( Int32::typeid, 5 );
for ( int i = my1DArray->GetLowerBound( 0 ); i <= my1DArray->GetUpperBound( 0 ); i++ )
my1DArray->SetValue( i + 1, i );
// Displays the values of the Array.
Console::WriteLine( "The one-dimensional Array instance contains the following values:" );
PrintValues( my1DArray );
}
void PrintValues( Array^ myArr )
{
System::Collections::IEnumerator^ myEnumerator = myArr->GetEnumerator();
int i = 0;
int cols = myArr->GetLength( myArr->Rank - 1 );
while ( myEnumerator->MoveNext() )
{
if ( i < cols )
{
i++;
}
else
{
Console::WriteLine();
i = 1;
}
Console::Write( "\t{0}", myEnumerator->Current );
}
Console::WriteLine();
}
/*
This code produces the following output.
The one-dimensional Array instance contains the following values:
1 2 3 4 5
*/
open System
let printValues (myArr: Array) =
let mutable i = 0
let cols = myArr.GetLength(myArr.Rank - 1)
for item in myArr do
if i < cols then
i <- i + 1
else
printfn ""
i <- 1
printf $"\t{item}"
printfn ""
// Creates and initializes a one-dimensional Array of type int.
let my1DArray = Array.CreateInstance(typeof<int>, 5)
// let my1DArrayy = Array.zeroCreate<int> 5
for i = my1DArray.GetLowerBound 0 to my1DArray.GetUpperBound 0 do
my1DArray.SetValue(i+1, i)
// Displays the values of the Array.
printfn "The one-dimensional Array contains the following values:"
printValues my1DArray
// This code produces the following output.
// The one-dimensional Array contains the following values:
// 1 2 3 4 5
using System;
public class SamplesArray {
public static void Main() {
// Creates and initializes a one-dimensional Array of type int.
Array my1DArray=Array.CreateInstance( typeof(int), 5 );
for ( int i = my1DArray.GetLowerBound(0); i <= my1DArray.GetUpperBound(0); i++ )
my1DArray.SetValue( i+1, i );
// Displays the values of the Array.
Console.WriteLine( "The one-dimensional Array contains the following values:" );
PrintValues( my1DArray );
}
public static void PrintValues( Array myArr ) {
System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
int i = 0;
int cols = myArr.GetLength( myArr.Rank - 1 );
while ( myEnumerator.MoveNext() ) {
if ( i < cols ) {
i++;
} else {
Console.WriteLine();
i = 1;
}
Console.Write( "\t{0}", myEnumerator.Current );
}
Console.WriteLine();
}
}
/*
This code produces the following output.
The one-dimensional Array contains the following values:
1 2 3 4 5
*/
Public Class SamplesArray
Public Shared Sub Main()
' Creates and initializes a one-dimensional Array of type Int32.
Dim my1DArray As Array = Array.CreateInstance(GetType(Int32), 5)
Dim i As Integer
For i = my1DArray.GetLowerBound(0) To my1DArray.GetUpperBound(0)
my1DArray.SetValue(i + 1, i)
Next i
' Displays the values of the Array.
Console.WriteLine("The one-dimensional Array contains the " _
+ "following values:")
PrintValues(my1DArray)
End Sub
Public Shared Sub PrintValues(myArr As Array)
Dim myEnumerator As System.Collections.IEnumerator = _
myArr.GetEnumerator()
Dim i As Integer = 0
Dim cols As Integer = myArr.GetLength((myArr.Rank - 1))
While myEnumerator.MoveNext()
If i < cols Then
i += 1
Else
Console.WriteLine()
i = 1
End If
Console.Write(ControlChars.Tab + "{0}", myEnumerator.Current)
End While
Console.WriteLine()
End Sub
End Class
' This code produces the following output.
'
' The one-dimensional Array contains the following values:
' 1 2 3 4 5
Remarks
Unlike most classes, Array provides the CreateInstance method, instead of public constructors, to allow for late bound access.
Reference-type elements are initialized to null. Value-type elements are initialized to zero.
This method is an O(n) operation, where n is length.
In F#, the Array.zeroCreate function is usually used instead.
Applies to
CreateInstance(Type, Int32[])
- Source:
- Array.cs
- Source:
- Array.cs
- Source:
- Array.cs
public:
static Array ^ CreateInstance(Type ^ elementType, ... cli::array <int> ^ lengths);public static Array CreateInstance (Type elementType, params int[] lengths);static member CreateInstance : Type * int[] -> ArrayPublic Shared Function CreateInstance (elementType As Type, ParamArray lengths As Integer()) As ArrayParameters
- lengths
- Int32[]
An array of 32-bit integers that represent the size of each dimension of the Array to create.
Returns
A new multidimensional Array of the specified Type with the specified length for each dimension, using zero-based indexing.
Exceptions
elementType is not supported. For example, Void is not supported.
-or-
elementType is an open generic type.
Any value in lengths is less than zero.
Examples
The following code example shows how to create and initialize a multidimensional Array.
using namespace System;
void PrintValues( Array^ myArr );
void main()
{
// Creates and initializes a multidimensional Array instance of type String.
array<int>^myLengthsArray = {2,3,4,5};
Array^ my4DArray = Array::CreateInstance( String::typeid, myLengthsArray );
for ( int i = my4DArray->GetLowerBound( 0 ); i <= my4DArray->GetUpperBound( 0 ); i++ )
for ( int j = my4DArray->GetLowerBound( 1 ); j <= my4DArray->GetUpperBound( 1 ); j++ )
for ( int k = my4DArray->GetLowerBound( 2 ); k <= my4DArray->GetUpperBound( 2 ); k++ )
for ( int l = my4DArray->GetLowerBound( 3 ); l <= my4DArray->GetUpperBound( 3 ); l++ )
{
array<int>^myIndicesArray = {i,j,k,l};
my4DArray->SetValue( String::Concat( Convert::ToString( i ), j, k, l ), myIndicesArray );
}
// Displays the values of the Array.
Console::WriteLine( "The four-dimensional Array instance contains the following values:" );
PrintValues( my4DArray );
}
void PrintValues( Array^ myArr )
{
System::Collections::IEnumerator^ myEnumerator = myArr->GetEnumerator();
int i = 0;
int cols = myArr->GetLength( myArr->Rank - 1 );
while ( myEnumerator->MoveNext() )
{
if ( i < cols )
{
i++;
}
else
{
Console::WriteLine();
i = 1;
}
Console::Write( "\t{0}", myEnumerator->Current );
}
Console::WriteLine();
}
/*
This code produces the following output.
The four-dimensional Array instance contains the following values:
0000 0001 0002 0003 0004
0010 0011 0012 0013 0014
0020 0021 0022 0023 0024
0030 0031 0032 0033 0034
0100 0101 0102 0103 0104
0110 0111 0112 0113 0114
0120 0121 0122 0123 0124
0130 0131 0132 0133 0134
0200 0201 0202 0203 0204
0210 0211 0212 0213 0214
0220 0221 0222 0223 0224
0230 0231 0232 0233 0234
1000 1001 1002 1003 1004
1010 1011 1012 1013 1014
1020 1021 1022 1023 1024
1030 1031 1032 1033 1034
1100 1101 1102 1103 1104
1110 1111 1112 1113 1114
1120 1121 1122 1123 1124
1130 1131 1132 1133 1134
1200 1201 1202 1203 1204
1210 1211 1212 1213 1214
1220 1221 1222 1223 1224
1230 1231 1232 1233 1234
*/
open System
let printValues (myArray: Array) =
let mutable i = 0
let cols = myArray.GetLength(myArray.Rank - 1)
for item in myArray do
if i < cols then
i <- i + 1
else
printfn ""
i <- 1;
printf $"\t{item}"
printfn ""
// Creates and initializes a multidimensional Array of type string.
let my4DArray = Array.CreateInstance( typeof<string>, [| 2..5 |] )
for i = my4DArray.GetLowerBound 0 to my4DArray.GetUpperBound 0 do
for j = my4DArray.GetLowerBound 1 to my4DArray.GetUpperBound 1 do
for k = my4DArray.GetLowerBound 2 to my4DArray.GetUpperBound 2 do
for l = my4DArray.GetLowerBound 3 to my4DArray.GetUpperBound 3 do
let myIndicesArray = [| i; j; k; l |]
my4DArray.SetValue($"{i}{j}{k}{l}", myIndicesArray)
// Displays the values of the Array.
printfn "The four-dimensional Array contains the following values:"
printValues my4DArray
// This code produces the following output.
// The four-dimensional Array contains the following values:
// 0000 0001 0002 0003 0004
// 0010 0011 0012 0013 0014
// 0020 0021 0022 0023 0024
// 0030 0031 0032 0033 0034
// 0100 0101 0102 0103 0104
// 0110 0111 0112 0113 0114
// 0120 0121 0122 0123 0124
// 0130 0131 0132 0133 0134
// 0200 0201 0202 0203 0204
// 0210 0211 0212 0213 0214
// 0220 0221 0222 0223 0224
// 0230 0231 0232 0233 0234
// 1000 1001 1002 1003 1004
// 1010 1011 1012 1013 1014
// 1020 1021 1022 1023 1024
// 1030 1031 1032 1033 1034
// 1100 1101 1102 1103 1104
// 1110 1111 1112 1113 1114
// 1120 1121 1122 1123 1124
// 1130 1131 1132 1133 1134
// 1200 1201 1202 1203 1204
// 1210 1211 1212 1213 1214
// 1220 1221 1222 1223 1224
// 1230 1231 1232 1233 1234
using System;
public class SamplesArray3 {
public static void Main() {
// Creates and initializes a multidimensional Array of type string.
int[] myLengthsArray = new int[4] { 2, 3, 4, 5 };
Array my4DArray=Array.CreateInstance( typeof(string), myLengthsArray );
for ( int i = my4DArray.GetLowerBound(0); i <= my4DArray.GetUpperBound(0); i++ )
for ( int j = my4DArray.GetLowerBound(1); j <= my4DArray.GetUpperBound(1); j++ )
for ( int k = my4DArray.GetLowerBound(2); k <= my4DArray.GetUpperBound(2); k++ )
for ( int l = my4DArray.GetLowerBound(3); l <= my4DArray.GetUpperBound(3); l++ ) {
int[] myIndicesArray = new int[4] { i, j, k, l };
my4DArray.SetValue( Convert.ToString(i) + j + k + l, myIndicesArray );
}
// Displays the values of the Array.
Console.WriteLine( "The four-dimensional Array contains the following values:" );
PrintValues( my4DArray );
}
public static void PrintValues( Array myArr ) {
System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
int i = 0;
int cols = myArr.GetLength( myArr.Rank - 1 );
while ( myEnumerator.MoveNext() ) {
if ( i < cols ) {
i++;
} else {
Console.WriteLine();
i = 1;
}
Console.Write( "\t{0}", myEnumerator.Current );
}
Console.WriteLine();
}
}
/*
This code produces the following output.
The four-dimensional Array contains the following values:
0000 0001 0002 0003 0004
0010 0011 0012 0013 0014
0020 0021 0022 0023 0024
0030 0031 0032 0033 0034
0100 0101 0102 0103 0104
0110 0111 0112 0113 0114
0120 0121 0122 0123 0124
0130 0131 0132 0133 0134
0200 0201 0202 0203 0204
0210 0211 0212 0213 0214
0220 0221 0222 0223 0224
0230 0231 0232 0233 0234
1000 1001 1002 1003 1004
1010 1011 1012 1013 1014
1020 1021 1022 1023 1024
1030 1031 1032 1033 1034
1100 1101 1102 1103 1104
1110 1111 1112 1113 1114
1120 1121 1122 1123 1124
1130 1131 1132 1133 1134
1200 1201 1202 1203 1204
1210 1211 1212 1213 1214
1220 1221 1222 1223 1224
1230 1231 1232 1233 1234
*/
Public Class SamplesArray
Public Shared Sub Main()
' Creates and initializes a multidimensional Array of type String.
Dim myLengthsArray() As Integer = {2, 3, 4, 5}
Dim my4DArray As Array = Array.CreateInstance(GetType(String), myLengthsArray)
Dim i, j, k, l As Integer
Dim myIndicesArray() As Integer
For i = my4DArray.GetLowerBound(0) To my4DArray.GetUpperBound(0)
For j = my4DArray.GetLowerBound(1) To my4DArray.GetUpperBound(1)
For k = my4DArray.GetLowerBound(2) To my4DArray.GetUpperBound(2)
For l = my4DArray.GetLowerBound(3) To my4DArray.GetUpperBound(3)
myIndicesArray = New Integer() {i, j, k, l}
my4DArray.SetValue(Convert.ToString(i) + j.ToString() _
+ k.ToString() + l.ToString(), myIndicesArray)
Next l
Next k
Next j
Next i
' Displays the values of the Array.
Console.WriteLine("The four-dimensional Array contains the following values:")
PrintValues(my4DArray)
End Sub
Public Shared Sub PrintValues(myArr As Array)
Dim myEnumerator As System.Collections.IEnumerator = myArr.GetEnumerator()
Dim i As Integer = 0
Dim cols As Integer = myArr.GetLength(myArr.Rank - 1)
While myEnumerator.MoveNext()
If i < cols Then
i += 1
Else
Console.WriteLine()
i = 1
End If
Console.Write(ControlChars.Tab + "{0}", myEnumerator.Current)
End While
Console.WriteLine()
End Sub
End Class
' This code produces the following output.
'
' The four-dimensional Array contains the following values:
' 0000 0001 0002 0003 0004
' 0010 0011 0012 0013 0014
' 0020 0021 0022 0023 0024
' 0030 0031 0032 0033 0034
' 0100 0101 0102 0103 0104
' 0110 0111 0112 0113 0114
' 0120 0121 0122 0123 0124
' 0130 0131 0132 0133 0134
' 0200 0201 0202 0203 0204
' 0210 0211 0212 0213 0214
' 0220 0221 0222 0223 0224
' 0230 0231 0232 0233 0234
' 1000 1001 1002 1003 1004
' 1010 1011 1012 1013 1014
' 1020 1021 1022 1023 1024
' 1030 1031 1032 1033 1034
' 1100 1101 1102 1103 1104
' 1110 1111 1112 1113 1114
' 1120 1121 1122 1123 1124
' 1130 1131 1132 1133 1134
' 1200 1201 1202 1203 1204
' 1210 1211 1212 1213 1214
' 1220 1221 1222 1223 1224
' 1230 1231 1232 1233 1234
Remarks
Unlike most classes, Array provides the CreateInstance method, instead of public constructors, to allow for late bound access.
The number of elements in the lengths array must equal the number of dimensions in the new Array. Each element of the lengths array must specify the length of the corresponding dimension in the new Array.
Reference-type elements are initialized to null. Value-type elements are initialized to zero.
This method is an O(n) operation, where n is the product of all values in lengths.
Applies to
CreateInstance(Type, Int64[])
- Source:
- Array.cs
- Source:
- Array.cs
- Source:
- Array.cs
public:
static Array ^ CreateInstance(Type ^ elementType, ... cli::array <long> ^ lengths);public static Array CreateInstance (Type elementType, params long[] lengths);static member CreateInstance : Type * int64[] -> ArrayPublic Shared Function CreateInstance (elementType As Type, ParamArray lengths As Long()) As ArrayParameters
- lengths
- Int64[]
An array of 64-bit integers that represent the size of each dimension of the Array to create. Each integer in the array must be between zero and Int32.MaxValue, inclusive.
Returns
A new multidimensional Array of the specified Type with the specified length for each dimension, using zero-based indexing.
Exceptions
elementType is not supported. For example, Void is not supported.
-or-
elementType is an open generic type.
Any value in lengths is less than zero or greater than Int32.MaxValue.
Examples
The following code example shows how to create and initialize a multidimensional Array.
using namespace System;
void PrintValues( Array^ myArr );
void main()
{
// Creates and initializes a multidimensional Array instance of type String.
array<int>^myLengthsArray = {2,3,4,5};
Array^ my4DArray = Array::CreateInstance( String::typeid, myLengthsArray );
for ( int i = my4DArray->GetLowerBound( 0 ); i <= my4DArray->GetUpperBound( 0 ); i++ )
for ( int j = my4DArray->GetLowerBound( 1 ); j <= my4DArray->GetUpperBound( 1 ); j++ )
for ( int k = my4DArray->GetLowerBound( 2 ); k <= my4DArray->GetUpperBound( 2 ); k++ )
for ( int l = my4DArray->GetLowerBound( 3 ); l <= my4DArray->GetUpperBound( 3 ); l++ )
{
array<int>^myIndicesArray = {i,j,k,l};
my4DArray->SetValue( String::Concat( Convert::ToString( i ), j, k, l ), myIndicesArray );
}
// Displays the values of the Array.
Console::WriteLine( "The four-dimensional Array instance contains the following values:" );
PrintValues( my4DArray );
}
void PrintValues( Array^ myArr )
{
System::Collections::IEnumerator^ myEnumerator = myArr->GetEnumerator();
int i = 0;
int cols = myArr->GetLength( myArr->Rank - 1 );
while ( myEnumerator->MoveNext() )
{
if ( i < cols )
{
i++;
}
else
{
Console::WriteLine();
i = 1;
}
Console::Write( "\t{0}", myEnumerator->Current );
}
Console::WriteLine();
}
/*
This code produces the following output.
The four-dimensional Array instance contains the following values:
0000 0001 0002 0003 0004
0010 0011 0012 0013 0014
0020 0021 0022 0023 0024
0030 0031 0032 0033 0034
0100 0101 0102 0103 0104
0110 0111 0112 0113 0114
0120 0121 0122 0123 0124
0130 0131 0132 0133 0134
0200 0201 0202 0203 0204
0210 0211 0212 0213 0214
0220 0221 0222 0223 0224
0230 0231 0232 0233 0234
1000 1001 1002 1003 1004
1010 1011 1012 1013 1014
1020 1021 1022 1023 1024
1030 1031 1032 1033 1034
1100 1101 1102 1103 1104
1110 1111 1112 1113 1114
1120 1121 1122 1123 1124
1130 1131 1132 1133 1134
1200 1201 1202 1203 1204
1210 1211 1212 1213 1214
1220 1221 1222 1223 1224
1230 1231 1232 1233 1234
*/
open System
let printValues (myArray: Array) =
let mutable i = 0
let cols = myArray.GetLength(myArray.Rank - 1)
for item in myArray do
if i < cols then
i <- i + 1
else
printfn ""
i <- 1;
printf $"\t{item}"
printfn ""
// Creates and initializes a multidimensional Array of type string.
let my4DArray = Array.CreateInstance( typeof<string>, [| 2..5 |] )
for i = my4DArray.GetLowerBound 0 to my4DArray.GetUpperBound 0 do
for j = my4DArray.GetLowerBound 1 to my4DArray.GetUpperBound 1 do
for k = my4DArray.GetLowerBound 2 to my4DArray.GetUpperBound 2 do
for l = my4DArray.GetLowerBound 3 to my4DArray.GetUpperBound 3 do
let myIndicesArray = [| i; j; k; l |]
my4DArray.SetValue($"{i}{j}{k}{l}", myIndicesArray)
// Displays the values of the Array.
printfn "The four-dimensional Array contains the following values:"
printValues my4DArray
// This code produces the following output.
// The four-dimensional Array contains the following values:
// 0000 0001 0002 0003 0004
// 0010 0011 0012 0013 0014
// 0020 0021 0022 0023 0024
// 0030 0031 0032 0033 0034
// 0100 0101 0102 0103 0104
// 0110 0111 0112 0113 0114
// 0120 0121 0122 0123 0124
// 0130 0131 0132 0133 0134
// 0200 0201 0202 0203 0204
// 0210 0211 0212 0213 0214
// 0220 0221 0222 0223 0224
// 0230 0231 0232 0233 0234
// 1000 1001 1002 1003 1004
// 1010 1011 1012 1013 1014
// 1020 1021 1022 1023 1024
// 1030 1031 1032 1033 1034
// 1100 1101 1102 1103 1104
// 1110 1111 1112 1113 1114
// 1120 1121 1122 1123 1124
// 1130 1131 1132 1133 1134
// 1200 1201 1202 1203 1204
// 1210 1211 1212 1213 1214
// 1220 1221 1222 1223 1224
// 1230 1231 1232 1233 1234
using System;
public class SamplesArray3 {
public static void Main() {
// Creates and initializes a multidimensional Array of type string.
int[] myLengthsArray = new int[4] { 2, 3, 4, 5 };
Array my4DArray=Array.CreateInstance( typeof(string), myLengthsArray );
for ( int i = my4DArray.GetLowerBound(0); i <= my4DArray.GetUpperBound(0); i++ )
for ( int j = my4DArray.GetLowerBound(1); j <= my4DArray.GetUpperBound(1); j++ )
for ( int k = my4DArray.GetLowerBound(2); k <= my4DArray.GetUpperBound(2); k++ )
for ( int l = my4DArray.GetLowerBound(3); l <= my4DArray.GetUpperBound(3); l++ ) {
int[] myIndicesArray = new int[4] { i, j, k, l };
my4DArray.SetValue( Convert.ToString(i) + j + k + l, myIndicesArray );
}
// Displays the values of the Array.
Console.WriteLine( "The four-dimensional Array contains the following values:" );
PrintValues( my4DArray );
}
public static void PrintValues( Array myArr ) {
System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
int i = 0;
int cols = myArr.GetLength( myArr.Rank - 1 );
while ( myEnumerator.MoveNext() ) {
if ( i < cols ) {
i++;
} else {
Console.WriteLine();
i = 1;
}
Console.Write( "\t{0}", myEnumerator.Current );
}
Console.WriteLine();
}
}
/*
This code produces the following output.
The four-dimensional Array contains the following values:
0000 0001 0002 0003 0004
0010 0011 0012 0013 0014
0020 0021 0022 0023 0024
0030 0031 0032 0033 0034
0100 0101 0102 0103 0104
0110 0111 0112 0113 0114
0120 0121 0122 0123 0124
0130 0131 0132 0133 0134
0200 0201 0202 0203 0204
0210 0211 0212 0213 0214
0220 0221 0222 0223 0224
0230 0231 0232 0233 0234
1000 1001 1002 1003 1004
1010 1011 1012 1013 1014
1020 1021 1022 1023 1024
1030 1031 1032 1033 1034
1100 1101 1102 1103 1104
1110 1111 1112 1113 1114
1120 1121 1122 1123 1124
1130 1131 1132 1133 1134
1200 1201 1202 1203 1204
1210 1211 1212 1213 1214
1220 1221 1222 1223 1224
1230 1231 1232 1233 1234
*/
Public Class SamplesArray
Public Shared Sub Main()
' Creates and initializes a multidimensional Array of type String.
Dim myLengthsArray() As Integer = {2, 3, 4, 5}
Dim my4DArray As Array = Array.CreateInstance(GetType(String), myLengthsArray)
Dim i, j, k, l As Integer
Dim myIndicesArray() As Integer
For i = my4DArray.GetLowerBound(0) To my4DArray.GetUpperBound(0)
For j = my4DArray.GetLowerBound(1) To my4DArray.GetUpperBound(1)
For k = my4DArray.GetLowerBound(2) To my4DArray.GetUpperBound(2)
For l = my4DArray.GetLowerBound(3) To my4DArray.GetUpperBound(3)
myIndicesArray = New Integer() {i, j, k, l}
my4DArray.SetValue(Convert.ToString(i) + j.ToString() _
+ k.ToString() + l.ToString(), myIndicesArray)
Next l
Next k
Next j
Next i
' Displays the values of the Array.
Console.WriteLine("The four-dimensional Array contains the following values:")
PrintValues(my4DArray)
End Sub
Public Shared Sub PrintValues(myArr As Array)
Dim myEnumerator As System.Collections.IEnumerator = myArr.GetEnumerator()
Dim i As Integer = 0
Dim cols As Integer = myArr.GetLength(myArr.Rank - 1)
While myEnumerator.MoveNext()
If i < cols Then
i += 1
Else
Console.WriteLine()
i = 1
End If
Console.Write(ControlChars.Tab + "{0}", myEnumerator.Current)
End While
Console.WriteLine()
End Sub
End Class
' This code produces the following output.
'
' The four-dimensional Array contains the following values:
' 0000 0001 0002 0003 0004
' 0010 0011 0012 0013 0014
' 0020 0021 0022 0023 0024
' 0030 0031 0032 0033 0034
' 0100 0101 0102 0103 0104
' 0110 0111 0112 0113 0114
' 0120 0121 0122 0123 0124
' 0130 0131 0132 0133 0134
' 0200 0201 0202 0203 0204
' 0210 0211 0212 0213 0214
' 0220 0221 0222 0223 0224
' 0230 0231 0232 0233 0234
' 1000 1001 1002 1003 1004
' 1010 1011 1012 1013 1014
' 1020 1021 1022 1023 1024
' 1030 1031 1032 1033 1034
' 1100 1101 1102 1103 1104
' 1110 1111 1112 1113 1114
' 1120 1121 1122 1123 1124
' 1130 1131 1132 1133 1134
' 1200 1201 1202 1203 1204
' 1210 1211 1212 1213 1214
' 1220 1221 1222 1223 1224
' 1230 1231 1232 1233 1234
Remarks
Unlike most classes, Array provides the CreateInstance method, instead of public constructors, to allow for late bound access.
The number of elements in the lengths array must equal the number of dimensions in the new Array. Each element of the lengths array must specify the length of the corresponding dimension in the new Array.
Reference-type elements are initialized to null. Value-type elements are initialized to zero.
This method is an O(n) operation, where n is the product of all values in lengths.
Applies to
CreateInstance(Type, Int32, Int32)
- Source:
- Array.cs
- Source:
- Array.cs
- Source:
- Array.cs
public:
static Array ^ CreateInstance(Type ^ elementType, int length1, int length2);public static Array CreateInstance (Type elementType, int length1, int length2);static member CreateInstance : Type * int * int -> ArrayPublic Shared Function CreateInstance (elementType As Type, length1 As Integer, length2 As Integer) As ArrayParameters
Returns
A new two-dimensional Array of the specified Type with the specified length for each dimension, using zero-based indexing.
Exceptions
elementType is null.
elementType is not a valid Type.
elementType is not supported. For example, Void is not supported.
-or-
elementType is an open generic type.
Examples
The following code example shows how to create and initialize a two-dimensional Array.
using namespace System;
void PrintValues( Array^ myArr );
void main()
{
// Creates and initializes a two-dimensional Array instance of type String.
Array^ my2DArray = Array::CreateInstance( String::typeid, 2, 3 );
for ( int i = my2DArray->GetLowerBound( 0 ); i <= my2DArray->GetUpperBound( 0 ); i++ )
for ( int j = my2DArray->GetLowerBound( 1 ); j <= my2DArray->GetUpperBound( 1 ); j++ )
my2DArray->SetValue( String::Concat( "abc", i, j ), i, j );
// Displays the values of the Array.
Console::WriteLine( "The two-dimensional Array instance contains the following values:" );
PrintValues( my2DArray );
}
void PrintValues( Array^ myArr )
{
System::Collections::IEnumerator^ myEnumerator = myArr->GetEnumerator();
int i = 0;
int cols = myArr->GetLength( myArr->Rank - 1 );
while ( myEnumerator->MoveNext() )
{
if ( i < cols )
{
i++;
}
else
{
Console::WriteLine();
i = 1;
}
Console::Write( "\t{0}", myEnumerator->Current );
}
Console::WriteLine();
}
/*
This code produces the following output.
The two-dimensional Array instance contains the following values:
abc00 abc01 abc02
abc10 abc11 abc12
*/
open System
let printValues (myArray: Array) =
let mutable i = 0
let cols = myArray.GetLength(myArray.Rank - 1)
for item in myArray do
if i < cols then
i <- i + 1
else
printfn ""
i <- 1;
printf $"\t{item}"
printfn ""
// Creates and initializes a two-dimensional Array of type string.
let my2DArray = Array.CreateInstance(typeof<string>, 2, 3)
// let my2DArray2 = Array2D.zeroCreate<string> 2 3
for i = my2DArray.GetLowerBound 0 to my2DArray.GetUpperBound 0 do
for j = my2DArray.GetLowerBound 1 to my2DArray.GetUpperBound 1 do
my2DArray.SetValue( $"abc{i}{j}", i, j )
// Displays the values of the Array.
printfn "The two-dimensional Array contains the following values:"
printValues my2DArray
// This code produces the following output.
// The two-dimensional Array contains the following values:
// abc00 abc01 abc02
// abc10 abc11 abc12
using System;
public class SamplesArray1 {
public static void Main() {
// Creates and initializes a two-dimensional Array of type string.
Array my2DArray=Array.CreateInstance( typeof(string), 2, 3 );
for ( int i = my2DArray.GetLowerBound(0); i <= my2DArray.GetUpperBound(0); i++ )
for ( int j = my2DArray.GetLowerBound(1); j <= my2DArray.GetUpperBound(1); j++ )
my2DArray.SetValue( "abc" + i + j, i, j );
// Displays the values of the Array.
Console.WriteLine( "The two-dimensional Array contains the following values:" );
PrintValues( my2DArray );
}
public static void PrintValues( Array myArr ) {
System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
int i = 0;
int cols = myArr.GetLength( myArr.Rank - 1 );
while ( myEnumerator.MoveNext() ) {
if ( i < cols ) {
i++;
} else {
Console.WriteLine();
i = 1;
}
Console.Write( "\t{0}", myEnumerator.Current );
}
Console.WriteLine();
}
}
/*
This code produces the following output.
The two-dimensional Array contains the following values:
abc00 abc01 abc02
abc10 abc11 abc12
*/
Public Class SamplesArray
Public Shared Sub Main()
' Creates and initializes a two-dimensional Array of type String.
Dim my2DArray As Array = Array.CreateInstance(GetType(String), 2, 3)
Dim i, j As Integer
For i = my2DArray.GetLowerBound(0) To my2DArray.GetUpperBound(0)
For j = my2DArray.GetLowerBound(1) To my2DArray.GetUpperBound(1)
my2DArray.SetValue("abc" + i.ToString() + j.ToString(), i, j)
Next j
Next i
' Displays the values of the Array.
Console.WriteLine("The two-dimensional Array contains the " _
+ "following values:")
PrintValues(my2DArray)
End Sub
Public Shared Sub PrintValues(myArr As Array)
Dim myEnumerator As System.Collections.IEnumerator = _
myArr.GetEnumerator()
Dim i As Integer = 0
Dim cols As Integer = myArr.GetLength(myArr.Rank - 1)
While myEnumerator.MoveNext()
If i < cols Then
i += 1
Else
Console.WriteLine()
i = 1
End If
Console.Write(ControlChars.Tab + "{0}", myEnumerator.Current)
End While
Console.WriteLine()
End Sub
End Class
' This code produces the following output.
'
' The two-dimensional Array contains the following values:
' abc00 abc01 abc02
' abc10 abc11 abc12
Remarks
Unlike most classes, Array provides the CreateInstance method, instead of public constructors, to allow for late bound access.
Reference-type elements are initialized to null. Value-type elements are initialized to zero.
This method is an O(n) operation, where n is the product of length1 and length2.
In F#, the Array2D.zeroCreate function can be used instead.
Applies to
CreateInstance(Type, Int32[], Int32[])
- Source:
- Array.cs
- Source:
- Array.cs
- Source:
- Array.cs
public:
static Array ^ CreateInstance(Type ^ elementType, cli::array <int> ^ lengths, cli::array <int> ^ lowerBounds);public static Array CreateInstance (Type elementType, int[] lengths, int[] lowerBounds);static member CreateInstance : Type * int[] * int[] -> ArrayPublic Shared Function CreateInstance (elementType As Type, lengths As Integer(), lowerBounds As Integer()) As ArrayParameters
- lengths
- Int32[]
A one-dimensional array that contains the size of each dimension of the Array to create.
- lowerBounds
- Int32[]
A one-dimensional array that contains the lower bound (starting index) of each dimension of the Array to create.
Returns
A new multidimensional Array of the specified Type with the specified length and lower bound for each dimension.
Exceptions
elementType is not a valid Type.
-or-
The lengths array contains less than one element.
-or-
The lengths and lowerBounds arrays do not contain the same number of elements.
elementType is not supported. For example, Void is not supported.
-or-
elementType is an open generic type.
Any value in lengths is less than zero.
-or-
Any value in lowerBounds is very large, such that the sum of a dimension's lower bound and length is greater than Int32.MaxValue.
Examples
The following code example shows how to create and initialize a multidimensional Array with specified lower bounds.
using namespace System;
void PrintValues( Array^ myArr );
void main()
{
// Creates and initializes a multidimensional Array instance of type String.
array<int>^myLengthsArray = {3,5};
array<int>^myBoundsArray = {2,3};
Array^ myArray = Array::CreateInstance( String::typeid, myLengthsArray, myBoundsArray );
for ( int i = myArray->GetLowerBound( 0 ); i <= myArray->GetUpperBound( 0 ); i++ )
for ( int j = myArray->GetLowerBound( 1 ); j <= myArray->GetUpperBound( 1 ); j++ )
{
array<int>^myIndicesArray = {i,j};
myArray->SetValue( String::Concat( Convert::ToString( i ), j ), myIndicesArray );
}
// Displays the lower bounds and the upper bounds of each dimension.
Console::WriteLine( "Bounds:\tLower\tUpper" );
for ( int i = 0; i < myArray->Rank; i++ )
Console::WriteLine( "{0}:\t{1}\t{2}", i, myArray->GetLowerBound( i ), myArray->GetUpperBound( i ) );
// Displays the values of the Array.
Console::WriteLine( "The Array instance contains the following values:" );
PrintValues( myArray );
}
void PrintValues( Array^ myArr )
{
System::Collections::IEnumerator^ myEnumerator = myArr->GetEnumerator();
int i = 0;
int cols = myArr->GetLength( myArr->Rank - 1 );
while ( myEnumerator->MoveNext() )
{
if ( i < cols )
{
i++;
}
else
{
Console::WriteLine();
i = 1;
}
Console::Write( "\t{0}", myEnumerator->Current );
}
Console::WriteLine();
}
/*
This code produces the following output.
Bounds: Lower Upper
0: 2 4
1: 3 7
The Array instance contains the following values:
23 24 25 26 27
33 34 35 36 37
43 44 45 46 47
*/
open System
let printValues (myArray: Array) =
let mutable i = 0
let cols = myArray.GetLength(myArray.Rank - 1)
for item in myArray do
if i < cols then
i <- i + 1
else
printfn ""
i <- 1;
printf $"\t{item}"
printfn ""
// Creates and initializes a multidimensional Array of type string.
let myLengthsArray = [| 3; 5 |]
let myBoundsArray = [| 2; 3 |]
let myArray = Array.CreateInstance(typeof<string>, myLengthsArray, myBoundsArray)
for i = myArray.GetLowerBound 0 to myArray.GetUpperBound 0 do
for j = myArray.GetLowerBound 1 to myArray.GetUpperBound 1 do
let myIndicesArray = [| i; j |]
myArray.SetValue($"{i}{j}", myIndicesArray)
// Displays the lower bounds and the upper bounds of each dimension.
printfn "Bounds:\tLower\tUpper"
for i = 0 to myArray.Rank - 1 do
printfn $"{i}:\t{myArray.GetLowerBound i}\t{myArray.GetUpperBound i}"
// Displays the values of the Array.
printfn "The Array contains the following values:"
printValues myArray
// This code produces the following output.
// Bounds: Lower Upper
// 0: 2 4
// 1: 3 7
// The Array contains the following values:
// 23 24 25 26 27
// 33 34 35 36 37
// 43 44 45 46 47
using System;
public class SamplesArray4 {
public static void Main() {
// Creates and initializes a multidimensional Array of type string.
int[] myLengthsArray = new int[2] { 3, 5 };
int[] myBoundsArray = new int[2] { 2, 3 };
Array myArray=Array.CreateInstance( typeof(string), myLengthsArray, myBoundsArray );
for ( int i = myArray.GetLowerBound(0); i <= myArray.GetUpperBound(0); i++ )
for ( int j = myArray.GetLowerBound(1); j <= myArray.GetUpperBound(1); j++ ) {
int[] myIndicesArray = new int[2] { i, j };
myArray.SetValue( Convert.ToString(i) + j, myIndicesArray );
}
// Displays the lower bounds and the upper bounds of each dimension.
Console.WriteLine( "Bounds:\tLower\tUpper" );
for ( int i = 0; i < myArray.Rank; i++ )
Console.WriteLine( "{0}:\t{1}\t{2}", i, myArray.GetLowerBound(i), myArray.GetUpperBound(i) );
// Displays the values of the Array.
Console.WriteLine( "The Array contains the following values:" );
PrintValues( myArray );
}
public static void PrintValues( Array myArr ) {
System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
int i = 0;
int cols = myArr.GetLength( myArr.Rank - 1 );
while ( myEnumerator.MoveNext() ) {
if ( i < cols ) {
i++;
} else {
Console.WriteLine();
i = 1;
}
Console.Write( "\t{0}", myEnumerator.Current );
}
Console.WriteLine();
}
}
/*
This code produces the following output.
Bounds: Lower Upper
0: 2 4
1: 3 7
The Array contains the following values:
23 24 25 26 27
33 34 35 36 37
43 44 45 46 47
*/
using System;
public class SamplesArray4 {
public static void Main() {
// Creates and initializes a multidimensional Array of type string.
int[] myLengthsArray = new int[2] { 3, 5 };
int[] myBoundsArray = new int[2] { 2, 3 };
Array myArray=Array.CreateInstance( typeof(string), myLengthsArray, myBoundsArray );
for ( int i = myArray.GetLowerBound(0); i <= myArray.GetUpperBound(0); i++ )
for ( int j = myArray.GetLowerBound(1); j <= myArray.GetUpperBound(1); j++ ) {
int[] myIndicesArray = new int[2] { i, j };
myArray.SetValue( Convert.ToString(i) + j, myIndicesArray );
}
// Displays the lower bounds and the upper bounds of each dimension.
Console.WriteLine( "Bounds:\tLower\tUpper" );
for ( int i = 0; i < myArray.Rank; i++ )
Console.WriteLine( "{0}:\t{1}\t{2}", i, myArray.GetLowerBound(i), myArray.GetUpperBound(i) );
// Displays the values of the Array.
Console.WriteLine( "The Array contains the following values:" );
PrintValues( myArray );
}
public static void PrintValues( Array myArr ) {
System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
int i = 0;
int cols = myArr.GetLength( myArr.Rank - 1 );
while ( myEnumerator.MoveNext() ) {
if ( i < cols ) {
i++;
} else {
Console.WriteLine();
i = 1;
}
Console.Write( "\t{0}", myEnumerator.Current );
}
Console.WriteLine();
}
}
/*
This code produces the following output.
Bounds: Lower Upper
0: 2 4
1: 3 7
The Array contains the following values:
23 24 25 26 27
33 34 35 36 37
43 44 45 46 47
*/
Remarks
Unlike most classes, Array provides the CreateInstance method, instead of public constructors, to allow for late bound access.
The lengths and lowerBounds arrays must have the same number of elements. The number of elements in the lengths array must equal the number of dimensions in the new Array.
Each element of the lengths array must specify the length of the corresponding dimension in the new Array.
Each element of the lowerBounds array must specify the lower bound of the corresponding dimension in the new Array. Generally, the .NET class library and many programming languages do not handle non-zero lower bounds.
Reference-type elements are initialized to null. Value-type elements are initialized to zero.
This method is an O(n) operation, where n is the product of all values in lengths.
Note
Not all languages support arrays with non-zero lower bounds, and therefore you may not be able to cast instances of non-zero based Array to the language's array type. For example, you cannot cast a 1-dimensional integer array with the lower bound 6 to C#'s int[] type. This results in InvalidCastException during runtime with the message "Unable to cast object of type 'System.Int32[*]' to type 'System.Int32[]'.", where the asterisk (*) means non-zero based index. However, you can cast zero based arrays of any rank created with CreateInstance(Type, Int32[], Int32[]) to the language's array. For example, you can cast a 2-dimensional zero based integer array created with this method to C#'s int[,] type.
Applies to
CreateInstance(Type, Int32, Int32, Int32)
- Source:
- Array.cs
- Source:
- Array.cs
- Source:
- Array.cs
public:
static Array ^ CreateInstance(Type ^ elementType, int length1, int length2, int length3);public static Array CreateInstance (Type elementType, int length1, int length2, int length3);static member CreateInstance : Type * int * int * int -> ArrayPublic Shared Function CreateInstance (elementType As Type, length1 As Integer, length2 As Integer, length3 As Integer) As ArrayParameters
Returns
A new three-dimensional Array of the specified Type with the specified length for each dimension, using zero-based indexing.
Exceptions
elementType is null.
elementType is not a valid Type.
elementType is not supported. For example, Void is not supported.
-or-
elementType is an open generic type.
length1 is less than zero.
-or-
length2 is less than zero.
-or-
length3 is less than zero.
Examples
The following code example shows how to create and initialize a three-dimensional Array.
using namespace System;
void PrintValues( Array^ myArr );
void main()
{
// Creates and initializes a three-dimensional Array instance of type Object.
Array^ my3DArray = Array::CreateInstance( Object::typeid, 2, 3, 4 );
for ( int i = my3DArray->GetLowerBound( 0 ); i <= my3DArray->GetUpperBound( 0 ); i++ )
for ( int j = my3DArray->GetLowerBound( 1 ); j <= my3DArray->GetUpperBound( 1 ); j++ )
for ( int k = my3DArray->GetLowerBound( 2 ); k <= my3DArray->GetUpperBound( 2 ); k++ )
my3DArray->SetValue( String::Concat( "abc", i, j, k ), i, j, k );
// Displays the values of the Array.
Console::WriteLine( "The three-dimensional Array instance contains the following values:" );
PrintValues( my3DArray );
}
void PrintValues( Array^ myArr )
{
System::Collections::IEnumerator^ myEnumerator = myArr->GetEnumerator();
int i = 0;
int cols = myArr->GetLength( myArr->Rank - 1 );
while ( myEnumerator->MoveNext() )
{
if ( i < cols )
{
i++;
}
else
{
Console::WriteLine();
i = 1;
}
Console::Write( "\t{0}", myEnumerator->Current );
}
Console::WriteLine();
}
/*
This code produces the following output.
The three-dimensional Array instance contains the following values:
abc000 abc001 abc002 abc003
abc010 abc011 abc012 abc013
abc020 abc021 abc022 abc023
abc100 abc101 abc102 abc103
abc110 abc111 abc112 abc113
abc120 abc121 abc122 abc123
*/
open System
let printValues (myArray: Array) =
let mutable i = 0
let cols = myArray.GetLength(myArray.Rank - 1)
for item in myArray do
if i < cols then
i <- i + 1
else
printfn ""
i <- 1;
printf $"\t{item}"
printfn ""
// Creates and initializes a three-dimensional Array of type Object.
let my3DArray = Array.CreateInstance(typeof<obj>, 2, 3, 4 )
// let my3dArray = Array3D.zeroCreate<obj> 2 3 4
for i = my3DArray.GetLowerBound 0 to my3DArray.GetUpperBound 0 do
for j = my3DArray.GetLowerBound 1 to my3DArray.GetUpperBound 1 do
for k = my3DArray.GetLowerBound 2 to my3DArray.GetUpperBound 2 do
my3DArray.SetValue($"abc{i}{j}{k}", i, j, k)
// Displays the values of the Array.
printfn "The three-dimensional Array contains the following values:"
printValues my3DArray
// This code produces the following output.
// The three-dimensional Array contains the following values:
// abc000 abc001 abc002 abc003
// abc010 abc011 abc012 abc013
// abc020 abc021 abc022 abc023
// abc100 abc101 abc102 abc103
// abc110 abc111 abc112 abc113
// abc120 abc121 abc122 abc123
using System;
public class SamplesArray2 {
public static void Main() {
// Creates and initializes a three-dimensional Array of type Object.
Array my3DArray=Array.CreateInstance( typeof(Object), 2, 3, 4 );
for ( int i = my3DArray.GetLowerBound(0); i <= my3DArray.GetUpperBound(0); i++ )
for ( int j = my3DArray.GetLowerBound(1); j <= my3DArray.GetUpperBound(1); j++ )
for ( int k = my3DArray.GetLowerBound(2); k <= my3DArray.GetUpperBound(2); k++ )
my3DArray.SetValue( "abc" + i + j + k, i, j, k );
// Displays the values of the Array.
Console.WriteLine( "The three-dimensional Array contains the following values:" );
PrintValues( my3DArray );
}
public static void PrintValues( Array myArr ) {
System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
int i = 0;
int cols = myArr.GetLength( myArr.Rank - 1 );
while ( myEnumerator.MoveNext() ) {
if ( i < cols ) {
i++;
} else {
Console.WriteLine();
i = 1;
}
Console.Write( "\t{0}", myEnumerator.Current );
}
Console.WriteLine();
}
}
/*
This code produces the following output.
The three-dimensional Array contains the following values:
abc000 abc001 abc002 abc003
abc010 abc011 abc012 abc013
abc020 abc021 abc022 abc023
abc100 abc101 abc102 abc103
abc110 abc111 abc112 abc113
abc120 abc121 abc122 abc123
*/
Public Class SamplesArray
Public Shared Sub Main()
' Creates and initializes a three-dimensional Array of type Object.
Dim my3DArray As Array = Array.CreateInstance(GetType(Object), 2, 3, 4)
Dim i As Integer
For i = my3DArray.GetLowerBound(0) To my3DArray.GetUpperBound(0)
Dim j As Integer
For j = my3DArray.GetLowerBound(1) To my3DArray.GetUpperBound(1)
Dim k As Integer
For k = my3DArray.GetLowerBound(2) To my3DArray.GetUpperBound(2)
my3DArray.SetValue("abc" + i.ToString() _
+ j.ToString() + k.ToString(), i, j, k)
Next k
Next j
Next i
' Displays the values of the Array.
Console.WriteLine("The three-dimensional Array contains the " _
+ "following values:")
PrintValues(my3DArray)
End Sub
Public Shared Sub PrintValues(myArr As Array)
Dim myEnumerator As System.Collections.IEnumerator = _
myArr.GetEnumerator()
Dim i As Integer = 0
Dim cols As Integer = myArr.GetLength(myArr.Rank - 1)
While myEnumerator.MoveNext()
If i < cols Then
i += 1
Else
Console.WriteLine()
i = 1
End If
Console.Write(ControlChars.Tab + "{0}", myEnumerator.Current)
End While
Console.WriteLine()
End Sub
End Class
' This code produces the following output.
'
' The three-dimensional Array contains the following values:
' abc000 abc001 abc002 abc003
' abc010 abc011 abc012 abc013
' abc020 abc021 abc022 abc023
' abc100 abc101 abc102 abc103
' abc110 abc111 abc112 abc113
' abc120 abc121 abc122 abc123
Remarks
Unlike most classes, Array provides the CreateInstance method, instead of public constructors, to allow for late bound access.
Reference-type elements are initialized to null. Value-type elements are initialized to zero.
This method is an O(n) operation, where n is the product of length1, length2, and length3.
In F#, the Array3D.zeroCreate function can be used instead.
Applies to
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