Event Bubbling

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
  {
    if (e.CommandName == "Edit")
    { 
      Response.Redirect("~/Form1.aspx?SrNo=" +  e.CommandArgument.ToString());
    }
    else if (e.CommandName == "Delete")
    {
      SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["MyConn"].ToString());
      con.Open();
      SqlCommand cmd = new SqlCommand();
      cmd.CommandText = "Delete from Rnd Where SrNo =" + e.CommandArgument.ToString();
      cmd.Connection = con;
      if (cmd.ExecuteNonQuery() > 0)
      {
        ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "Message", "alert('Record deleted');window.location.href='Form2.aspx';", true);
      }
      else
      {
        ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "Message", "alert('Record not deleted')", true);
      }
    }
  }