WPF button click and command doesn't work together MVVM

Question

I'm developing some wpf application, using mvvm. I'm trying to use button click event and command together but command never get executed. Also when I use only command without click event it works perfect. Here is the code:

<ControlTemplate x:Key="reminderDataTemplate">          
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="25" />
            <RowDefinition Height="150" />
            <RowDefinition Height="20" />
        </Grid.RowDefinitions>
        <Label Grid.Row="0" Content="New reminder:" HorizontalAlignment="Left" />
        <TextBox Text="{Binding Path=ReminderText, UpdateSourceTrigger=PropertyChanged}" Grid.Row="1" Height="150" Width="200" HorizontalAlignment="Left"/>
        <Button Name="btnSaveReminder" Grid.Row="2" Content="Save" Width="auto" Height="20" HorizontalAlignment="Left" Click="btnSaveReminder_Click"  Command="{Binding Path= btnSaveReminder}"  />
    </Grid>
</ControlTemplate>

Why is this happening?

Just to mention that I must use click and command together becouse my view and viewmodel are in different projects.

UPDATE: Also to say that, when I use click and command together in buttons outside of control template, everything works perfect.

yes, when I remove it the command executes well. But I need both, the click event and command to get executed. — Stojdza, Dec 13 '13 at 11:49
*I must use click and command together becouse my view and viewmodel are in different projects*... views and view models are often in different projects but that doesn't explain why you need to use both... what are you doing in your `Click` handler? — Sheridan, Dec 13 '13 at 11:57
Structure of my application doesn't allow me to add reference of my wpf project to my MVVM project, so I can't access my wpf components from mvvm. I use click event only to change the control template of some listbox, and command is used to save some data into db. — Stojdza, Dec 13 '13 at 12:01
@Stojdza neither should it. The ViewModel should have no knowledge of the View at all. *Does* your ViewModel have a ICommand-derived property called `btnSaveReminder`? Which framework are you using? — Panagiotis Kanavos, Dec 13 '13 at 12:04

score 24 · Accepted Answer · edited Aug 28 '18 at 02:16

24

on the Click event, execute command.

private void btnClick(object sender, RoutedEventArgs e)
{
    var btn = sender as Button;
    btn.Command.Execute(btn.CommandParameter);
}

edited Aug 28 '18 at 02:16

Rey

3,663
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answered Dec 13 '13 at 11:56

ebattulga

10,774
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9

Better to check `CanExecute()` before calling `Execute()`. Note that if your command might ever unavailable, you should verify that the button is still being enabled/disabled based on the command status. If the command doesn't execute as expected in combination `Click`, the button status may not update correctly either. – Mike Strobel Dec 13 '13 at 15:37

WPF button click and command doesn't work together MVVM

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