Place Cursor in the First Input Box Automatically

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protected void Page_Load(object sender, EventArgs e)

 {    FindFirstTextBox(this); }

 private bool FindFirstTextBox(Control ctl)

 {    bool foundControl = false;

    foreach (Control child in ctl.Controls)

    {

      if (child is TextBox)

       {

         System.Text.StringBuilder script =             new System.Text.StringBuilder();

          script.AppendFormat("function findFirstControl()n{1}n document.getElementById("{0}").focus();n{2}n",             child.ID, "{", "}");

        ClientScript.RegisterClientScriptBlock(this.GetType(),"findFirstControl", script.ToString(), true);

          foundControl = true;

          break;

       }

    if (FindFirstTextBox(child))

      {

       foundControl = true;

         break;

       }

     }

  return foundControl;

 }