Tuple(Of T1, T2, T3, T4).Item1 Property
Gets the value of the current Tuple(Of T1, T2, T3, T4) object's first component.
Assembly: mscorlib (in mscorlib.dll)
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(Of T1, T2, T3, T4) object, and retrieving the first element from the array that is returned by its Type.GetGenericArguments method.
The following example defines an array of Tuple(Of 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 Main() 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. Console.WriteLine("{0,41}", "Temperatures") Console.WriteLine("{0,-20} {1,5} {2,4} {3,4}", "City", "Month", "High", "Low") Console.WriteLine() For Each temperature In temperatures Console.WriteLine("{0,-20} {1,5} {2,4:N1} {3,4:N1}", temperature.Item1, DateTimeFormatInfo.CurrentInfo.GetAbbreviatedMonthName(temperature.Item2 - 1), temperature.Item3, temperature.Item4) 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
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.