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Wpf usercontrol binding not updating

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In the previous article we saw how changes in a Text Box was not immediately sent back to the source.

Instead, the source was updated only after focus was lost on the Text Box.

For most needs, the simpler user control is more appropriate.

From participating in sites like Stack Overflow I have noticed that whilst most people understand how to create a user control, which allows them to 'stamp out' the same XAML in multiple places, many struggle with how to make their user controls flexible by exposing properties that configure how it looks or behaves.

This blog post will walk through a simple example, showing you how to create a user control, add dependency properties, wire them to the user control XAML and make a truly re-useable control.

It defaults to the value "Default", which basically means that the source is updated based on the property that you bind to.

In the UIProperty Meta Data, you need to specify a function to call when the property changes - so you can set text Search. The function looks like this: I've tried all those methods, they work well my Main problem is that its One Way binding .(ie the textbox in User Control changes its text when the property in my class changes, but typing in the text box dosen't change the underlaying property.)This is my 11th day on this, pls i really need help. When I use it in a datagridcolumn all is fine but the changes I make in the column are not going back in my "First Name" property.

I think the problem is my "Generate Editing Element", maybe someone can help me out?

So you expose a public property Text and map it to text Search just like you would in Win Forms.

Well, that doesn't work, so you google around and stumble upon Dependency Properties and learn how to create your own (VS snippet shortcut propdb) and create a Text DP.

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.

You can choose to use either the markup extension or the markup extension.

And you can even use a mixture of the two in the same app—even on the same UI element.

Now you spend 30 minutes trying to map your Text DP to your text Search.

Text until you finally figure out that your DP snippet lead you astray and there is one more step that didn't get included in the shortcut.