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QuestionDataGrid Built In ViewModel Question Pin
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QuestionDependencyProperty fires only in ViewModel.ctor Pin
iwangoll25-Feb-24 7:34
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AnswerRe: DependencyProperty fires only in ViewModel.ctor Pin
Richard Deeming25-Feb-24 22:44
mveRichard Deeming25-Feb-24 22:44 
XAML data-binding to dependency properties does not use the property getter or setter. It calls SetValue directly on the DependencyProperty instance. Any code that needs to execute when the property value changes needs to be in the PropertyChangedCallback method.

#118 – Don’t Add Code to Dependency Property Getter/Setter | 2,000 Things You Should Know About WPF[^]

You've also forgotten to raise the PropertyChanged event from your viewmodel. Assuming the usual definition of BindableBase, you probably meant to write something like:
C#
private string _testInfoView;
public string TestInfoView 
{ 
    get { return _testInfoView; }
    set { SetProperty(ref _testInfoView, value); }
}
The SetProperty method will update the field and raise the PropertyChanged event for you.



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GeneralRe: DependencyProperty fires only in ViewModel.ctor Pin
iwangoll26-Feb-24 1:51
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GeneralRe: DependencyProperty fires only in ViewModel.ctor Pin
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GeneralRe: DependencyProperty fires only in ViewModel.ctor Pin
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QuestionWhen Are All DependencyProperties Set Pin
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AnswerDataGrid Event Not Firing Pin
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