ASP.NET: Problems with CustomValidator...

[gicio]

Hi!

I have a litte problem with my CustomValidator.


What my CustomValidator should do:
The CustomValidator should check if 2 textboxes are empty..
if yes he should diplay a message.


This is my code:

<asp:customvalidator id="CustomValidator1" runat="server" ErrorMessage="Sie müssen min. 1 Telefonnummer angeben"
		Display="Static" OnServerValidate="ValidateExistanceOfPhones"></asp:customvalidator></P>

	<script runat="server">
		void ValidateExistanceOfPhones(object source, ServerValidateEventArgs args)
		{
			args.IsValid = !((m_txtTelephoneNumber.Text.Length == 0) && (m_txtMobileNumber.Text.Length == 0));
		}
	</script>

the calidator check ValidateExistanceOfPhones. but when args.IsValid = false the message isn't
shown. What is the problem??!
Make I something wrong?

2. quastion: is it possible to check the state of the 2 textboxes on the client side?
when YES how?



best regards,


gicio

[Steven.Bentley]

I have no experience of ASP, however it's definitely possible to use JavaScript to validate this on the client side.

<script>
function validate(){
score=0
if(document.myform.text1.value=""){
message="text1 has not been filled in"
score++
}
if(document.myform.text2.value=""){
score++
message="text2 has not been filled in"
}

if(score==0){
document.myform.submit()
}else{
alert(message);
}
}
</script>


<form action="yourscript.asp" name="myform">

<input type="text" name="text1" />
<input type="text" name="text2" />

<input type="button" onclick="validate()" value="Go">

</form>

The function validate() is called when the button (a regular button rather than submit) is clicked. The function starts by initialising a variable score to 0, then checks each of the inputs seperately and incremements score if the test is "failed", putting a message into the variable message. Then it checks score and either submits the form or pops up an alert containing message as appropriate.