Tuple<T1, T2>.Item1 Property
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Gets the value of the current Tuple<T1, T2> object's first component.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public ReadOnly Property Item1 As T1
public T1 Item1 { get; }
Property Value
Type: T1
The value of the current Tuple<T1, T2> object's first component.
Remarks
You can dynamically determine the type of the Item1 component in one of two ways:
By calling the GetType method on the value that is returned by the Item1 property.
By retrieving the Type object that represents the Tuple<T1, T2> object, and retrieving the first element from the array that is returned by its Type.GetGenericArguments method.
Examples
The example illustrates the use of the Item1 and Item2 properties to define a method that returns multiple values in the form of a 2-tuple.
Module Example
Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
Dim dividend, divisor As Integer
Dim result As Tuple(Of Integer, Integer)
dividend = 136945 : divisor = 178
result = IntegerDivide(dividend, divisor)
If result IsNot Nothing Then
outputBlock.Text += String.Format("{0} \ {1} = {2}, remainder {3}", _
dividend, divisor, result.Item1, result.Item2) + vbCrLf
Else
outputBlock.Text += String.Format("{0} \ {1} = <Error>", dividend, divisor) & vbCrLf
End If
dividend = Int32.MaxValue : divisor = -2073
result = IntegerDivide(dividend, divisor)
If result IsNot Nothing Then
outputBlock.Text += String.Format("{0} \ {1} = {2}, remainder {3}", _
dividend, divisor, result.Item1, result.Item2) + vbCrLf
Else
outputBlock.Text += String.Format("{0} \ {1} = <Error>", dividend, divisor) & vbCrLf
End If
End Sub
Private Function IntegerDivide(ByVal dividend As Integer, ByVal divisor As Integer) As Tuple(Of Integer, Integer)
Try
Dim quotient As Integer = dividend \ divisor
Dim remainder As Integer = dividend Mod divisor
Return New Tuple(Of Integer, Integer)(quotient, remainder)
Catch e As DivideByZeroException
Return Nothing
End Try
End Function
End Module
' The example displays the following output:
' 136945 \ 178 = 769, remainder 63
' 2147483647 \ -2073 = -1035930, remainder 757
using System;
public class Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
int dividend, divisor;
Tuple<int, int> result;
dividend = 136945; divisor = 178;
result = IntegerDivide(dividend, divisor);
if (result != null)
outputBlock.Text += String.Format(@"{0} \ {1} = {2}, remainder {3}",
dividend, divisor, result.Item1, result.Item2) + "\n";
else
outputBlock.Text += String.Format(@"{0} \ {1} = <Error>", dividend, divisor) + "\n";
dividend = Int32.MaxValue; divisor = -2073;
result = IntegerDivide(dividend, divisor);
if (result != null)
outputBlock.Text += String.Format(@"{0} \ {1} = {2}, remainder {3}",
dividend, divisor, result.Item1, result.Item2) + "\n";
else
outputBlock.Text += String.Format(@"{0} \ {1} = <Error>", dividend, divisor) + "\n";
}
private static Tuple<int, int> IntegerDivide(int dividend, int divisor)
{
try
{
int quotient = dividend / divisor;
int remainder = dividend % divisor;
return new Tuple<int, int>(quotient, remainder);
}
catch (DivideByZeroException)
{
return null;
}
}
}
// The example displays the following output:
// 136945 \ 178 = 769, remainder 63
// 2147483647 \ -2073 = -1035930, remainder 757
Version Information
Silverlight
Supported in: 5, 4
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.