Accessing Master page method into Child page asp.net 4.0 [Resolved]

 public partial class SiteMaster : System.Web.UI.MasterPage

    {

        protected void Page_Load(object sender, EventArgs e)

        {



        }

        public void TestData()

        {

            //write your code

        }

    }

 public partial class _Default : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            (this.Master as SiteMaster).TestData();

        }

    }

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