Handling Button Click Event in ViewModel using MVVM structure of Silverlight

1. Write Xaml as follows

<Button Command="{Binding SearchCommand}" Content="Search" 
Height="20" HorizontalAlignment="Right" 
Margin="0,16,19,0" TabIndex="14" VerticalAlignment="Top" 
Width="75" Grid.Column="2" />

2. Write in viewModel as follows

//This is command against when search button will be pressed
 public RelayCommand SearchCommand
 {
    get
    {
      //GetDatais a method for your action on click event
      return new RelayCommand(GetData);
    }
 }

3. You Method for for on button click

protected void GetData()
{
     //Your work
     //
     //
}