本文整理匯總了VB.NET中System.Action<T>代理的典型用法代碼示例。如果您正苦於以下問題：VB.NET Action<T>代理的具體用法？VB.NET Action<T>怎麽用？VB.NET Action<T>使用的例子？那麽, 這裏精選的代理代碼示例或許可以為您提供幫助。
在下文中一共展示了Action<T>代理的4個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: Main
' 導入命名空間
Imports System.Collections.Generic
Class Program
Shared Sub Main()
Dim names As New List(Of String)
names.Add("Bruce")
names.Add("Alfred")
names.Add("Tim")
names.Add("Richard")
' Display the contents of the list using the Print method.
names.ForEach(AddressOf Print)
End Sub
Shared Sub Print(ByVal s As String)
Console.WriteLine(s)
End Sub
End Class
' This code will produce output similar to the following:
' Bruce
' Alfred
' Tim
' Richard示例2: DisplayMessage
Delegate Sub DisplayMessage(message As String)
Module TestCustomDelegate
Public Sub Main
Dim messageTarget As DisplayMessage
If Environment.GetCommandLineArgs().Length > 1 Then
messageTarget = AddressOf ShowWindowsMessage
Else
messageTarget = AddressOf Console.WriteLine
End If
messageTarget("Hello, World!")
End Sub
Private Sub ShowWindowsMessage(message As String)
MsgBox(message)
End Sub
End Module示例3: TestAction1
Module TestAction1
Public Sub Main
Dim messageTarget As Action(Of String)
If Environment.GetCommandLineArgs().Length > 1 Then
messageTarget = AddressOf ShowWindowsMessage
Else
messageTarget = AddressOf Console.WriteLine
End If
messageTarget("Hello, World!")
End Sub
Private Sub ShowWindowsMessage(message As String)
MsgBox(message)
End Sub
End Module示例4: TestLambdaExpression
' 導入命名空間
Imports System.Windows.Forms
Public Module TestLambdaExpression
Public Sub Main()
Dim messageTarget As Action(Of String)
If Environment.GetCommandLineArgs().Length > 1 Then
messageTarget = Sub(s) ShowWindowsMessage(s)
Else
messageTarget = Sub(s) ShowConsoleMessage(s)
End If
messageTarget("Hello, World!")
End Sub
Private Function ShowWindowsMessage(message As String) As Integer
Return MessageBox.Show(message)
End Function
Private Function ShowConsoleMessage(message As String) As Integer
Console.WriteLine(message)
Return 0
End Function
End Module