DataTypeInfoEnumerator.Reset Method
Sets the enumerator to its initial position, which is before the first element in the collection.
Namespace: Microsoft.SqlServer.Dts.Runtime
Assembly: Microsoft.SqlServer.ManagedDTS (in Microsoft.SqlServer.ManagedDTS.dll)
Syntax
'Declaration
Public Sub Reset
'Usage
Dim instance As DataTypeInfoEnumerator
instance.Reset()
public void Reset()
public:
virtual void Reset() sealed
abstract Reset : unit -> unit
override Reset : unit -> unit
public final function Reset()
Implements
Examples
The following code sample creates an enumerator, then uses the Current, MoveNext, and Reset methods to navigate over the collection.
using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.SqlServer.Dts.Runtime;
namespace DataTypeInfos_GetEnum_Current
{
class Program
{
static void Main(string[] args)
{
//Create the DataTypeInfos collection.
DataTypeInfos dataInfos = new Application().DataTypeInfos;
//Create the enumerator.
DataTypeInfoEnumerator myEnumerator = dataInfos.GetEnumerator();
Console.WriteLine("The collection contains the following values:");
int i = 0;
DataTypeInfo dtiObject;
while ((myEnumerator.MoveNext()) && (myEnumerator.Current != null))
{
dtiObject = (DataTypeInfo)myEnumerator.Current;
Console.WriteLine("[{0}] {1} {2}", i++, dtiObject.TypeName, dtiObject.TypeEnumName);
}
// Reset puts the index pointer before the beginning.
// Do not retrieve from the collection until MoveNext is called.
myEnumerator.Reset();
myEnumerator.MoveNext();
// Now that the enumerator has been reset, and moved to the
// first item in the collection, show the first item.
dtiObject = (DataTypeInfo)myEnumerator.Current;
Console.WriteLine("The first item in the enumerator after Reset:");
Console.WriteLine("{0}, {1}", dtiObject.TypeName, dtiObject.TypeEnumName);
}
}
}
Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
Namespace DataTypeInfos_GetEnum_Current
Class Program
Shared Sub Main(ByVal args() As String)
'Create the DataTypeInfos collection.
Dim dataInfos As DataTypeInfos = New Application().DataTypeInfos
'Create the enumerator.
Dim myEnumerator As DataTypeInfoEnumerator = dataInfos.GetEnumerator()
Console.WriteLine("The collection contains the following values:")
Dim i As Integer = 0
Dim dtiObject As DataTypeInfo
While (myEnumerator.MoveNext()) &&(myEnumerator.Current <> Nothing)
dtiObject = CType(myEnumerator.Current, DataTypeInfo)
Console.WriteLine("[{0}] {1} {2}",i = Console.WriteLine("[{0}] {1} {2}",i + 1
End While
' Reset puts the index pointer before the beginning.
' Do not retrieve from the collection until MoveNext is called.
myEnumerator.Reset()
myEnumerator.MoveNext()
' Now that the enumerator has been reset, and moved to the
' first item in the collection, show the first item.
dtiObject = CType(myEnumerator.Current, DataTypeInfo)
Console.WriteLine("The first item in the enumerator after Reset:")
Console.WriteLine("{0}, {1}", dtiObject.TypeName, dtiObject.TypeEnumName)
End Sub
End Class
End Namespace
Sample Output:
The collection contains the following values:
[0] float DT_R4
[1] double-precision float DT_R8
[2] currency DT_CY
[3] date DT_DATE
[4] Boolean DT_BOOL
[5] decimal DT_DECIMAL
[6] single-byte signed integer DT_I1
[7] single-byte unsigned integer DT_UI1
[8] two-byte signed integer DT_I2
[9] two-byte unsigned integer DT_UI2
[10] four-byte signed integer DT_I4
[11] four-byte unsigned integer DT_UI4
[12] eight-byte signed integer DT_I8
[13] eight-byte unsigned integer DT_UI8
[14] file timestamp DT_FILETIME
[15] unique identifier DT_GUID
[16] byte stream DT_BYTES
[17] string DT_STR
[18] Unicode string DT_WSTR
[19] numeric DT_NUMERIC
[20] database date DT_DBDATE
[21] database time DT_DBTIME
[22] database timestamp DT_DBTIMESTAMP
[23] image DT_IMAGE
[24] text stream DT_TEXT
[25] Unicode text stream DT_NTEXT
The first item in the enumerator after Reset:
float, DT_R4