How to execute Button Command with Parameter without providing the Parameter when called in the View-CodePudding

I am new to MVVM pattern and I just wanted to ask what is the best way to "click" or execute a button command that has a command parameter of contentdialog from the ViewModel.

Example code: View

<Button Command="{x:Bind ViewModel.OpenContentDialog}" CommandParameter="{Binding ElementName=DialogBox}" Grid.Row="0" Grid.Column="3">Open Dialog</Button>

<ContentDialog x:Name="DialogBox"
           PrimaryButtonText="OK" IsPrimaryButtonEnabled="{Binding PrimaryButtonEnabled}"
           CloseButtonText="Cancel">
                                <ContentDialog.TitleTemplate>
                                    <DataTemplate>
                                        <StackPanel Orientation="Horizontal">
                                            <TextBlock Text="Dialog"/>
                                        </StackPanel>
                                    </DataTemplate>
                                </ContentDialog.TitleTemplate>
...

ViewModel

 public RelayCommand<object> OpenContentDialog => new RelayCommand<object>((dialog) => { SortDialog(dialog); });

I want to call the OpenContentDialog command in another ViewModel method like this:

OpenContentDialog.Execute(); //needs the parameter

I have tried passing the actual ContentDialog as a ViewModel Object, it works but I am not sure if that violates the MVVM pattern.

CodePudding user response：

If the command expects a ContentDialog to be passed as an argument, your two options are to either create such a ContentDialog programmatically before you call Execute or get a reference to an already existing dialog:

OpenContentDialog.Execute(
    new ContentDialog() { PrimaryButtonText = "OK", IsPrimaryButtonEnabled = true });