Simple custom validation trouble...

[song2siren]

Hello

I just need to create a custom validator to check whether a control contains a value and, if it doesn't, change the style of div tag.

I tried this:

Sub surnameCheck_ServerValidate(sender as Object, e as ServerValidateEventArgs)
Dim strValue As String = e.Value
If not strValue is nothing then
e.IsValid = True
Else
e.IsValid = False
lblSurnameRow.Text = "<div class='row error'>"
End If
End Sub

With my controls like this:

<asp:Label ID="lblSurnameRow" runat="server"><div class="row"></asp:Label>
<span class="formElement"><asp:TextBox ID="frmSurname" onfocus="pviiW3Cbg(this,'#F4DFA9')" onblur="pviiW3Cbg(this,'#E5EFFF')" runat="server" /></span>
<asp:CustomValidator ControlToValidate="frmSurname" Display="Dynamic" runat="server" OnServerValidate="surnameCheck_ServerValidate" />

However, the form is submitted regardless of a value in frmSurname.

Hopefully, I'm missing something really simple, but any suggestions would be much appreciated.

 

[chrissie1]

if strvalue.length > 0 then
 E;isvalid = true
...

Christiaan Baes
Belgium

If you want to get an answer read this FAQ faq796-2540
There's no such thing as a winnable war - Sting

 

[song2siren]

Hi chrissie1 - thanks for the tip

I've changed my validation code to:

Sub surnameCheck_ServerValidate(sender as Object, e as ServerValidateEventArgs)
Dim strValue As String = e.Value
If strValue.Length > 0 Then
e.IsValid = True
Else
e.IsValid = False
lblSurnameRow.Text = "<div class='row error'>"
End If
End Sub

However, the validation still isn't running and my submit code runs as if the page is valid. The code to submit is as follows:

Sub SubmitBtn_Click(ByVal sender As Object, ByVal e As ImageClickEventArgs)

If Page.IsValid Then
etc
End If

End Sub

Just can't seem to stop the page submitting if this field is empty.

Thanks again.

 

[LFCfan]

I've not used VB.NET in a while, so I'm a bit rusty, but in C# you'd have to do:

SurnameCheck.Validate();
Page.Validate();
if (Page.IsValid.....
etc

I think you have to explicitly call the control's validate method.

HTH, apologies if my VB.NET memory is fooling me!