Multibinding in WPF.

You can do multibinding to a control's property by using multiple binding elements.

For e.g. the Text property of the Textblock can be set by using multiple bindings as follows:
<TextBlock.Text>
    <MultiBinding StringFormat=""MR. {0}, {1}"">
      <Binding Path=""FirstName"" />      
<Binding Path=""LastName"" />    
   </MultiBinding>  
</TextBlock.Text>