Accessing the methods of a MasterPage from inside the Web Form

write this code inside child page of masterpage to access a control.

Label lblmsg;

lblmsg = (Label)Master.FindControl("lblTitle");

lblmsg.Text = "I love my india";

//---------------------------------- 

((EmpMasterPage)this.Master).SetMessage("I love my India");

here EmpMasterPage is a name of MasterPage and SetMessage is a method of that MasterPage.