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aspdotnet_website_programming thread: custom validating a dropdown usercontrol


Message #1 by "Greg Partin" <GPartin@c...> on Fri, 21 Jun 2002 12:50:17 -0700
Hi folks,

I have a custom control that is made up of a dropdownlist.  I need to
validate this control.  I am using the following code in my codebehind:

Imports System.Web.UI.WebControls
.
.
.

<ValidationPropertyAttribute("ClassDropDown")> Public Class
ClassDropDown

    Inherits System.Web.UI.UserControl
    Public WithEvents ClassDropDown As
System.Web.UI.WebControls.DropDownList
.
.
.

And on the front side I have:

<td><asp:label id="Label1" runat="server" Font-Bold="True"
text="Class"></asp:label></td>
<td><uc1:classdropdown id="ClassDropDown1"
runat="server"></uc1:classdropdown></td>
<td colspan="2"><asp:RequiredFieldValidator id="validateClassDropDown"
runat="server" ControlToValidate="ClassDropDown1" ErrorMessage="Please
Select A Class" Display="Dynamic" InitialValue="Select Class"
Width="100%"></asp:RequiredFieldValidator></td>

My first impression is that I cannot have the validation property be a
dropdownlist?!  There are no examples of using a dropdownlist as the
validation property anywhere that I can find.  Any suggestions would be
greatly appreciated!

thanks,
Greg

Greg Partin
Software Engineer

CompassLearning, Inc.
2400 N. Commerce Pkwy.
Suite #404
Weston, FL  33326

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