Validating Textbox with CustomValidator's ClientValidationFunction not firing

Question

I am having some serious issues with this. I have a two fields like this, both of them being assigned datepickers with jquery.

<asp:TextBox ID="RTRP" runat="server" CssClass="textEntry" Width="120"></asp:TextBox>
<asp:CustomValidator runat="server" ID="CustomValidator3" 
   ControlToValidate="RTRP"
   Text="No date selected" 
   ValidateEmptyText="True"
   ClientValidationFunction="clientValidate" 
   Display="Static">
</asp:CustomValidator>
<asp:TextBox ID="ContEd" runat="server" CssClass="textEntry" Width="120"></asp:TextBox>
<asp:CustomValidator runat="server" ID="CustomValidator1"
    ControlToValidate="ContEd"
    Text="No date selected" 
    ValidateEmptyText="True"
    ClientValidationFunction="clientValidate" 
    Display="Static">
</asp:CustomValidator>

With the following javascript to validate it.

$("#<%=RTRP.ClientID %>").datepicker();
$("#<%=ContEd.ClientID %>").datepicker();

function clientValidate(sender, args) {
    args.IsValid = args.Value.length > 0;
}

Both get their datepickers, but the validation function simply refuses to be fired and always allows the form to submit. I am completely lost here, what am I doing wrong?

Tim Schmelter · Accepted Answer · 2013-01-21 08:37:47Z

1

You are checking if a string's length is less than 0 (what is never true) here:

function clientValidate(sender, args) {
    if (args.Value.length < 0) {
        args.IsValid = false;
    } else {
        args.IsValid = true;
    }
}

I'm not sure if this is what you want(you could simpy use a RequiredFieldValidator), but...

function clientValidate(sender, args) {
    args.IsValid = args.Value.length > 0;
}

edited Jan 21, 2013 at 8:37

answered Jan 21, 2013 at 8:32

Tim Schmelter

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4 Comments

Jesus Zamora Over a year ago

Tried that, but it still does not seem to trigger at all. Even tried to call an alert and changing the text in another field, but apparently it is skipping it completely.

Tim Schmelter Over a year ago

@JesusZamora: Your TextBoxes don't have AutoPostBack="true"(default is false), maybe you want to postback immediately.

Tim Schmelter Over a year ago

@JesusZamora: But where's the submit button you use?

Jesus Zamora Over a year ago

It's within the same asp:Content as both textboxes.

Pratik Bhatt · Accepted Answer · 2013-01-21 08:35:39Z

0

If you assign $.datepicker() behaviour to any text, and run page.. you will find that textbox on which you override jQuery datepicker had css set display : none.. so that might be the reason that custom validation not getting for that textbox...

answered Jan 21, 2013 at 8:35

Pratik Bhatt

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Comments

any user · Accepted Answer · 2013-01-21 08:36:47Z

0

why dont you use

<asp:RequiredFieldValidator id="id" controltovalidate="controlname" erormessage="please enter the dates"> 
</asp:RequiredFieldValidator>

correct me i am wrong

answered Jan 21, 2013 at 8:36

any user

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1 Comment

Jesus Zamora Over a year ago

Yes, that's what I would have used, but later on I need it to be able to check if a checkbox is checked in order to proceed. Thanks anyway.

Kiran1016 · Accepted Answer · 2013-01-21 08:41:23Z

0

Change you method to this.and try again

function clientValidate(sender, args)
{
  if(Page_ClientValidate())
  {
   if (args.Value.length < 0)
   {
    args.IsValid = false;
   } else
   {
    args.IsValid = true;
   }
  }
}

answered Jan 21, 2013 at 8:41

Kiran1016

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1 Comment

Tim Schmelter Over a year ago

clientValidate is already the event handler, this would cause an infinite loop( imho ).

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