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.NET Forum / Windows Forms / WinForm Data Binding / February 2006How to determine if a value has changed as a result of data binding
Hello, if I bind a property of a control to a field in a data source, is there a way to know that its value has changed as a result of data binding. For example, if I bind Text property of a TextBox, I need to know that TextChanged event was triggered because value has just been read from the data source, as opposed to user interaction or changing the value from code. Thanks. Hi, > Hello, > [quoted text clipped - 4 lines] > the data source, as opposed to user interaction or changing the value > from code. The TextBox itself doesn't even know it is bound. As far as the TextBox is concerned the Text is always changed in the same way using the Text property. I do believe that the Binding's Format or BindingComplete(NET2.0) event is always fired before the Binding sets the Text. HTH, Greetings > Thanks. Yes, I noticed this, however it is not very practical to add an event handler for each and every Binding object I use. It would be much better if Binding object had 'Active' property, indicating that it is currently pushing the value to the bound property. Well, I suppose I will have to rewrite my app so I don't need this functionality. Thanks. Hi, > Yes, I noticed this, however it is not very practical to add an event > handler for each and every Binding object I use. It would be much > better if Binding object had 'Active' property, indicating that it is > currently pushing the value to the bound property. Yeah, that sounds like a good idea. Infact the Binding has a boolean inPushOrPull field but it's private :-( Thanks for the feedback, Greetings > Well, I suppose I will have to rewrite my app so I don't need this > functionality. > > Thanks. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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