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I have a grid in my application. After user selects some files in ofdialog application processes some calculations. While app is making calculations it looks like it is not responding. How to display some picture and make main window in black&white while calculating? Maybe make some dp in MainWindow a la “IsBusy” and bind a popup with picture to it?
How you implement this logic in yours apps?
One easy way is to use the busy indicator from Extended WPF Toolkit:
Dowload the binaries and add project reference to WPFToolkit.Extended.dll.
Next add following namespace in your ‘main window’:
Then add the busy indicator in the view (place it so that when shown, it will occupy the whole screen) Here my main window has two rows and I want the control to span on both rows. The control’s IsBusy property is bound to a bool property in the view’s data context.
The long lasting calculation should be processed in another thread so that it won’t block the user interface. For threading you can use BackgroundWorker class.