Asp Customvalidator, Advancing To Postback After Error

I have an ASP .NET page with ASP validators (Required Field, Regular Expression,...) plus java script functions for additional validation (for example, to check if second date bigg

Solution 1:

When using a CustomValidator, the client side validation function needs to accept a source and an arguments parameter. Then, to mark the validation as failed, you set arguments.IsValid to false. Here is the MSDN page for the CustomValidator.

functionvalidate(source, arguments) {
   // ...alert('Not valid!');
   arguments.IsValid=false;
}

Solution 2:

like @Jason wrote, when using CustomValidator client is excepting for source and arguments params. a quick sample of use both client and server side with CustomValidator.

CustomValidator use ClientValidationFunction and OnServerValidate properties:

<asp:CustomValidatorID="cvCreditCard"runat="server"ErrorMessage="Error Message"ControlToValidate="txtCardNumber"ClientValidationFunction="Validators.CardNumber"OnServerValidate="ValidateCreditCardValid">*</asp:CustomValidator>

Client side validation:

varValidators = {
CardNumber: function (source, clientside_arguments) {

    var valid_val = true;
    var txtCardNumber = clientside_arguments.Value; //(return the ControlToValidate value)//make your checks here

    clientside_arguments.IsValid = valid_val;
}}

server side validation:

protectedvoidValidateCreditCardValid(object sender, ServerValidateEventArgs e)
    {
       //make your checks here            
       e.IsValid = false;

    }

Solution 3:

I solved this problem by creating a variable:

BooleanfieldIsValid=true;

and in the custom validating expression method I would change the value if arguments weren't true:

if(args.IsValid == false)
            {
                fieldIsValid = false;
            }
            else
            {
                fieldIsValid = true;
            }

Then, I also put that in the submit click method:

protectedvoidsubmit_Click(object sender, EventArgs e)
        {
            if (fieldIsValid)
            {
                //submit my things
            }
        }