Tuple<T1, T2, T3, T4>.Item4 Property
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Gets the value of the current Tuple<T1, T2, T3, T4> object's fourth component.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public ReadOnly Property Item4 As T4
public T4 Item4 { get; }
Property Value
Type: T4
The value of the current Tuple<T1, T2, T3, T4> object's fourth component.
Remarks
You can dynamically determine the type of the Item4 component in one of two ways:
By calling the GetType method on the value that is returned by the Item4 property.
By retrieving the Type object that represents the Tuple<T1, T2, T3, T4> object, and retrieving the fourth element from the array that is returned by its Type.GetGenericArguments method.
Examples
The following example defines an array of Tuple<T1, T2, T3, T4> objects whose components contain the name of a city, a month of the year, and the average high and low temperatures for that month. It then retrieves and displays the value of each component.
Imports System.Globalization
Module Example
Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
outputBlock.FontFamily = New System.Windows.Media.FontFamily("Courier New")
Dim temperatures() = _
{ Tuple.Create("New York, NY", 4, 61, 43), _
Tuple.Create("Chicago, IL", 2, 34, 18), _
Tuple.Create("Newark, NJ", 4, 61, 43), _
Tuple.Create("Boston, MA", 6, 77, 59), _
Tuple.Create("Detroit, MI", 9, 74, 53), _
Tuple.Create("Minneapolis, MN", 8, 81, 61) }
' Display the array of 4-tuples.
outputBlock.Text &= String.Format("{0,41}", "Temperatures") & vbCrLf
outputBlock.Text += String.Format("{0,-20} {1,5} {2,4} {3,4}", _
"City", "Month", "High", "Low") + vbCrLf
outputBlock.Text &= vbCrLf
For Each temperature In temperatures
outputBlock.Text += String.Format("{0,-20} {1,5} {2,4:N1} {3,4:N1}", _
temperature.Item1, _
DateTimeFormatInfo.CurrentInfo.GetAbbreviatedMonthName(temperature.Item2 - 1), _
temperature.Item3, temperature.Item4) & vbCrLf
Next
End Sub
End Module
' The example displays the following output:
' Temperatures
' City Month High Low
'
' New York, NY Mar 61.0 43.0
' Chicago, IL Jan 34.0 18.0
' Newark, NJ Mar 61.0 43.0
' Boston, MA May 77.0 59.0
' Detroit, MI Aug 74.0 53.0
' Minneapolis, MN Jul 81.0 61.0
using System;
using System.Globalization;
public class Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
outputBlock.FontFamily = new System.Windows.Media.FontFamily("Courier New");
Tuple<string, int, double, double>[] temperatures =
{ Tuple.Create("New York, NY", 4, 61.0, 43.0),
Tuple.Create("Chicago, IL", 2, 34.0, 18.0),
Tuple.Create("Newark, NJ", 4, 61.0, 43.0),
Tuple.Create("Boston, MA", 6, 77.0, 59.0),
Tuple.Create("Detroit, MI", 9, 74.0, 53.0),
Tuple.Create("Minneapolis, MN", 8, 81.0, 61.0) };
// Display the array of 4-tuple objects.
outputBlock.Text += String.Format("{0,41}\n", "Temperatures");
outputBlock.Text += String.Format("{0,-20} {1,5} {2,4} {3,4}\n\n",
"City", "Month", "High", "Low");
foreach (var temperature in temperatures)
outputBlock.Text += String.Format("{0,-20} {1,5} {2,4:N1} {3,4:N1}",
temperature.Item1,
DateTimeFormatInfo.CurrentInfo.GetAbbreviatedMonthName(temperature.Item2 - 1),
temperature.Item3, temperature.Item4) + "\n";
}
}
// The example displays the following output:
// Temperatures
// City Month High Low
//
// New York, NY Mar 61.0 43.0
// Chicago, IL Jan 34.0 18.0
// Newark, NJ Mar 61.0 43.0
// Boston, MA May 77.0 59.0
// Detroit, MI Aug 74.0 53.0
// Minneapolis, MN Jul 81.0 61.0
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.