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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You write the following code fragment. You need to ensure that the StringMember property of the data-bound object is updated immediately when the user types the TextBox control. Which binding expression should you use?()

发布日期:2021-01-28

You use Microsoft Visual Studio 2010 and Microsoft...
A

{ Binding Path=StringMember, Mode=TwoWay }

B

{ Binding Path=StringMember, NotifyOnSourceUpdated=True }

C

{ Binding Path=StringMember, NotifyOnTargetUpdated=True }

D

{ Binding Path=StringMember, UpdateSourceTrigger=PropertyChanged }

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