本文整理匯總了VB.NET中System.Activities.NativeActivity<TResult>類的典型用法代碼示例。如果您正苦於以下問題：VB.NET NativeActivity<TResult>類的具體用法？VB.NET NativeActivity<TResult>怎麽用？VB.NET NativeActivity<TResult>使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
在下文中一共展示了NativeActivity<TResult>類的1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: Execute
Public NotInheritable Class ReadInt
Inherits NativeActivity(Of Integer)
<RequiredArgument()>
Property BookmarkName() As InArgument(Of String)
Protected Overrides Sub Execute(ByVal context As NativeActivityContext)
Dim name As String
name = BookmarkName.Get(context)
If name = String.Empty Then
Throw New ArgumentException("BookmarkName cannot be an Empty string.",
"BookmarkName")
End If
context.CreateBookmark(name, New BookmarkCallback(AddressOf OnReadComplete))
End Sub
' NativeActivity derived activities that do asynchronous operations by calling
' one of the CreateBookmark overloads defined on System.Activities.NativeActivityContext
' must override the CanInduceIdle property and return True.
Protected Overrides ReadOnly Property CanInduceIdle As Boolean
Get
Return True
End Get
End Property
Sub OnReadComplete(ByVal context As NativeActivityContext, ByVal bookmark As Bookmark, ByVal state As Object)
Result.Set(context, Convert.ToInt32(state))
End Sub
End Class