Question

I am using a silverlight application. Trying to bind a button’s click command to a relay command in ViewModel and passing some parameters to it. Code for my View is :

<Button x:Name="button" Content="Button" VerticalAlignment="Top" Margin="173,0,152,0">
        <i:Interaction.Triggers>
            <i:EventTrigger EventName="Click">
                <i:InvokeCommandAction CommandParameter="{Binding ActualWidth, ElementName=button, Mode=TwoWay}" Command="{Binding CRelayDecimal, Mode=OneWay}"/>
            </i:EventTrigger>
        </i:Interaction.Triggers>
</Button>

A button is passing it’s ActualWidth as parameter for command’s parameter. My ViewModel code is:

public Page1()
{
    InitializeComponent();
    CRelayDecimal = new RelayCommand<Object>(this.GetDecimal);
}

public RelayCommand<Object> CRelayDecimal { get; private set; }

private void GetDecimal(Object Obj)
{
    var value = (double)Obj;
}

Now, the problem I see here is that most of the time passed parameter value I receive is 0.0. Intermittently, I’ve seen value to be precise value (like.. 75.0) that it should be.

Is there any other way of doing it ?

Thanks you all for your help in advance.

Thanks and Regards

Nishant Rana

Answer 1

Okay Got the answer why this was not working.. because it’s a known issue in silverlight.

Read this link for details from MSFT.