protected void FindStartsWith_Click(object sender, EventArgs e) { Button button = (Button)sender; TextBox startsWith = (TextBox)button.NamingContainer.FindControl("tbAddressStartsWith"); DropDownList ddlAddress = (DropDownList)button.NamingContainer.FindControl("ddlAddress"); DropDownList ddlZipCode = (DropDownList)button.NamingContainer.FindControl("ddlZipCode"); WACGlobal_Methods.AddressStartsWith(ddlAddress, ddlZipCode.SelectedItem.Text, startsWith.Text); ddlAddress.Visible = true; }