WPF Command Binding

Question

A quick question on binding to a command in WPF. I've got a command that expects a Boolean as the parameter to execute, but I don't know how to specify the type in the xaml, anyone give me any pointers?

Command Code

public override void Execute(object parameter)
{
   Boolean saveAs = (Boolean)parameter;
}

Xaml Code

<MenuItem Header="Save" Command="{Binding SaveOverlayCommand}" CommandParameter="False">
   <MenuItem.Icon>
      <Image Source="..\resources\save.png" MaxHeight="16" MaxWidth="16"/>
   </MenuItem.Icon>
</MenuItem>

Answer 1

<MenuItem Header="Save" Command="{Binding SaveOverlayCommand}">
   <MenuItem.CommandParameter>
       <System:Boolean xmlns:System="clr-namespace:System;assembly=mscorlib">False</System:Boolean>
   </MenuItem.CommandParameter>
   <MenuItem.Icon> 
      <Image Source="..\resources\save.png" MaxHeight="16" MaxWidth="16"/> 
   </MenuItem.Icon> 
</MenuItem>