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The other options are Property Changed, Lost Focus and Explicit.
The first two has already been described, while the last one simply means that the update has to be pushed manually through to occur, using a call to Update Source on the Binding.
Here is my xaml: Here is my Web Service completed method, where I populate the Items Source (which works) and then I try to set the Selected Item (which doesn't update the UI, but my Selected Item raise property event does fire) This problem is driving me absolutely bonkers!
I also tried setting up a binding to Selected Index, but that doesn't work either.
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For that reason, I have added a button next to the Text Box, which will update the source value on demand.
In the Code-behind, you will find the Click handler, where we use a couple of lines of code to get the binding from the destination control and then call the Update Source() method on it.
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By day, Michael is a solutions architect at Amerisource Bergen Specialty Group where he delivers high quality enterprise software in . By night, he writes mobile applications in Java for the Andriod platform.
The second Text Box uses the Lost Focus value, which is actually the default for a Text binding.