Access Content Page controls in inside of Master Page CodeBehind?

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C#2.0

C#

Hi to all,

I have one Master Page and many number of Content page.

With in that Content pages I have the DropDownList box.

I have to access the DropDownList Control inside of the MasterPage like this

protected void Page_Load(object sender, EventArgs e)
 {

ContentPlaceHolder ct = (ContentPlaceHolder)Master.FindControl(sender.ToString());
        ControlCollection CCl = ct.Controls;
        
        foreach (Control ctrl in CCl)
        {
            if (this.Controls.GetType() == typeof(DropDownList))
            {
                strDropDownID = ((DropDownList)ctrl).ID;
                if ((strDropDownID.Contains("ddlCountry")) || (strDropDownID.Contains("ddlFromCountry")) || (strDropDownID.Contains("ddlToCountry")) || (strDropDownID.Contains("ddlOrginCountry")) || (strDropDownID.Contains("ddlDestinationCountry")))
                {
                    ClientScriptManager cs = Page.ClientScript;

                    // Check to see if the client script is already registered.

                    if (!cs.IsClientScriptBlockRegistered(this.GetType(), "DropDownListScript"))
                    {

                        StringBuilder cstext2 = new StringBuilder();

                        cstext2.Append("<script type='text/javascript'> function SelectCountry('" + strDropDownID + "') {");

                        cstext2.Append("script>");

                        cs.RegisterClientScriptBlock(this.GetType(), "DropDownListScript", cstext2.ToString(), false);

                    }
                }
            }

        }
}

The first line of the code gets Content page name but it gives an Error.

I dont know how to get the Page name of the Current Page which one is calling the Master Page.

If you know the solution to access the page name inside the master page
it would help me very much.

Thanks to all.