Tuple<T1, T2, T3, T4, T5, T6>.Item1 Property
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Gets the value of the current Tuple<T1, T2, T3, T4, T5, T6> 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, T3, T4, T5, T6> 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, T3, T4, T5, T6> object, and retrieving the first 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, T5, T6> objects whose components contain population data for three U.S. cities (New York, Chicago, and Los Angeles) from 1960 through 2000. It then displays a table that lists the data. To display the city name, it retrieves the value of the Item1 property for each Tuple<T1, T2, T3, T4, T5, T6> object.
Module Example
Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
' Create tuples containing population data for New York, Chicago,
' and Los Angeles, 1960-2000.
Dim cities() = _
{ Tuple.Create("New York", 7781984, 7894862, _
7071639, 7322564, 8008278), _
Tuple.Create("Los Angeles", 2479015, 2816061, _
2966850, 3485398, 3694820), _
Tuple.Create("Chicago", 3550904, 3366957, _
3005072, 2783726, 2896016) }
' Display tuple data in table.
Dim header As String = "Population in"
outputBlock.Text += String.Format("{0,-12} {1,60}", _
"City", New String("-"c,(60-header.Length)\2) + header + _
New String("-"c, (60-header.Length)\2)) + vbCrLf
outputBlock.Text += String.Format("{0,25}{1,12}{2,12}{3,12}{4,12}", _
"1960", "1970", "1980", "1990", "2000") + vbCrLf
outputBlock.Text &= vbCrLf
For Each city In cities
outputBlock.Text += String.Format("{0,-12} {1,12:N0}{2,12:N0}{3,12:N0}{4,12:N0}{5,12:N0}", _
city.Item1, city.Item2, city.Item3, city.Item4, _
city.Item5, city.Item6) + vbCrLf
Next
End Sub
End Module
' The example displays the following output:
' City -----------------------Population in-----------------------
' 1960 1970 1980 1990 2000
'
' New York 7,781,984 7,894,862 7,071,639 7,322,564 8,008,278
' Los Angeles 2,479,015 2,816,061 2,966,850 3,485,398 3,694,820
' Chicago 3,550,904 3,366,957 3,005,072 2,783,726 2,896,016
using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
// Create tuples containing population data for New York, Chicago,
// and Los Angeles, 1960-2000.
Tuple<string, int, int, int, int, int>[] cities =
{ Tuple.Create("New York", 7781984, 7894862, 7071639, 7322564, 8008278),
Tuple.Create("Los Angeles", 2479015, 2816061, 2966850, 3485398, 3694820),
Tuple.Create("Chicago", 3550904, 3366957, 3005072, 2783726, 2896016) };
// Display tuple data in table.
string header = "Population in";
outputBlock.Text += String.Format("{0,-12} {1,60}",
"City", new String('-', (60 - header.Length) / 2) + header +
new String('-', (60 - header.Length) / 2)) + "\n";
outputBlock.Text += String.Format("{0,25}{1,12}{2,12}{3,12}{4,12}\n",
"1960", "1970", "1980", "1990", "2000") + "\n";
foreach (var city in cities)
outputBlock.Text += String.Format("{0,-12} {1,12:N0}{2,12:N0}{3,12:N0}{4,12:N0}{5,12:N0}",
city.Item1, city.Item2, city.Item3, city.Item4,
city.Item5, city.Item6) + "\n";
}
}
// The example displays the following output:
// City -----------------------Population in-----------------------
// 1960 1970 1980 1990 2000
//
// New York 7,781,984 7,894,862 7,071,639 7,322,564 8,008,278
// Los Angeles 2,479,015 2,816,061 2,966,850 3,485,398 3,694,820
// Chicago 3,550,904 3,366,957 3,005,072 2,783,726 2,896,016
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.