本文整理汇总了VB.NET中System.Activities.NativeActivity<TResult>类的典型用法代码示例。如果您正苦于以下问题：VB.NET NativeActivity<TResult>类的具体用法？VB.NET NativeActivity<TResult>怎么用？VB.NET NativeActivity<TResult>使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了NativeActivity<TResult>类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
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