Hi Wes,
First off, you can't have the drop lists set to autopostback. This is
because drop lists do not cause validation and you need validation.
Here's how I setup your scenario.
I have a drop list, a custom validator and a button as follows (the drop
list I load with two values "One" and "Two"):
<asp:dropdownlist id="DropDownList1" runat="server"
AutoPostBack="True"></asp:dropdownlist>
<asp:customvalidator id="CustomValidator2" runat="server"
ClientValidationFunction="CustomValidator2_Validat e">Error</asp:customvalida
tor>
<asp:Button id="Button1" runat="server" Text="Button"></asp:Button>
The custom validator is not set to any ControlToValidate so that it will
execute even if the control it is validating is blank.
Then I set the validator's client script as follows
function CustomValidator2_Validate(source, arguments) {
if (document.all("DropDownList1").value == "Two")
{
arguments.IsValid = false;
}
else
{
arguments.IsValid = true;
}
}
---
I hope this helps.
Thank you, Mike
Microsoft, ASP.NET Support Professional
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--------------------
From: "Wes Weems" <ww**********@charter.net>
Newsgroups: microsoft.public.dotnet.framework.aspnet
Subject: Form Validation of ASP.NET's DropDownList
Date: Sun, 19 Oct 2003 22:39:56 -0700
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I'd like to have a 3 values in a drop down, and have a validator not
allow a form submit unless its 2 of the 3 values (eg, one of the values says
"select one")
I used custom validator and did a if(args.value == "0"){args.IsValid =
false;)
however it seemed like it never even fired that validator, even though the
submit button CausesValidation = true,
Thanks,
Ronnyek
