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GeneralRe: Can anyone recommend a free WPF editor? Pin
Richard Andrew x6423-Jul-21 4:45
professionalRichard Andrew x6423-Jul-21 4:45 
GeneralRe: Can anyone recommend a free WPF editor? Pin
Mike Hankey23-Jul-21 4:50
mveMike Hankey23-Jul-21 4:50 
GeneralRe: Can anyone recommend a free WPF editor? Pin
Slacker00723-Jul-21 5:01
professionalSlacker00723-Jul-21 5:01 
GeneralRe: Can anyone recommend a free WPF editor control? Pin
Richard Deeming27-Jul-21 23:16
mveRichard Deeming27-Jul-21 23:16 
GeneralRe: Can anyone recommend a free WPF editor control? Pin
Mike Hankey28-Jul-21 2:05
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QuestionInstalling Test Mode vs Production Mode Pin
Kevin Marois19-Jul-21 8:55
professionalKevin Marois19-Jul-21 8:55 
QuestionRouted Event Args Null Pin
Kevin Marois28-Jun-21 16:28
professionalKevin Marois28-Jun-21 16:28 
AnswerRe: Routed Event Args Null Pin
Richard Deeming28-Jun-21 22:34
mveRichard Deeming28-Jun-21 22:34 
The problem isn't that the EventArgs object is null; it's that the EventArgs object isn't being passed as the command parameter to your RelayCommand.

If you're using the Microsoft.Xaml.Behaviors.Wpf[^] package, you need to set PassEventArgsToCommand="True" on your <i:InvokeCommandAction> element.

If you're using Prism, that will pass the event args automatically if the command parameter is not set. But that would use a different namepsace prefix on the InvokeCommandAction element.
6: Advanced MVVM Scenarios Using the Prism Library 5.0 for WPF | Microsoft Docs[^]

Other platforms will have different approaches. There are quite a few documented on this SO thread:
wpf - MVVM Passing EventArgs As Command Parameter - Stack Overflow[^]



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QuestionHow to change background color in combobox in code behind? Pin
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QuestionMake textbox fill up and resizie Pin
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Question[Problem] Why can not Pass Image between 2 Views by using the same ViewModel (MVVM) Pin
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AnswerRe: [Problem] Why can not Pass Image between 2 Views by using the same ViewModel (MVVM) Pin
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GeneralRe: [Problem] Why can not Pass Image between 2 Views by using the same ViewModel (MVVM) Pin
Oscar Tsai20-Jun-21 3:20
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GeneralRe: [Problem] Why can not Pass Image between 2 Views by using the same ViewModel (MVVM) Pin
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AnswerRe: [Problem] Why can not Pass Image between 2 Views by using the same ViewModel (MVVM) Pin
Richard Deeming20-Jun-21 23:37
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GeneralRe: [Problem] Why can not Pass Image between 2 Views by using the same ViewModel (MVVM) Pin
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GeneralRe: [Problem] Why can not Pass Image between 2 Views by using the same ViewModel (MVVM) Pin
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AnswerRe: [Problem] Why can not Pass Image between 2 Views by using the same ViewModel (MVVM) Pin
michaelbarb23-Sep-21 10:32
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GeneralRe: [Problem] Why can not Pass Image between 2 Views by using the same ViewModel (MVVM) Pin
Oscar Tsai13-Oct-21 15:14
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GeneralRe: [Problem] Why can not Pass Image between 2 Views by using the same ViewModel (MVVM) Pin
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QuestionProblem Setting Focus Pin
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AnswerRe: Problem Setting Focus Pin
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QuestionImpossible to override a value in an animation located in a style? Pin
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