CODEWITHSUNDEEP
c#asp.netwebforms
Chavis Chua
Chavis Chua

Reputation: 95

Custom Validation doesn't fire

Here are my lines of code:

For the Textbox and the CustomValidator:

<asp:TextBox ID="Edit_Tbox_Email" runat="server" placeholder="Email Address..." CausesValidation="true" ValidationGroup="submission"></asp:TextBox>
<asp:CustomValidator runat="server" ControlToValidate="Edit_Tbox_Email" ID="cv_Email" OnServerValidate="cv_Email_ServerValidate" ErrorMessage="!" data-toggle="tooltip" title="Invalid Input!" ValidationGroup="submission"></asp:CustomValidator>

This is for the Button to allow the user to change his/her email:

<asp:Button ID="Edit_But_Email" runat="server" Text="Change" CssClass="btn btn-small" OnClick="Edit_But_Email_Click" ValidationGroup="submission" CausesValidation="true"/>

On server side:

protected void Edit_But_Email_Click(object sender, EventArgs e)
    {
        if(Page.IsValid)
            Edit_Lab_Email.Text = Edit_Tbox_Email.Text;
    }

protected void cv_Email_ServerValidate(object source, ServerValidateEventArgs args)
    {
        string emailRegex = "^\\w+[\\w-\\.]*\\@\\w+((-\\w+)|(\\w*))\\.[a-z]{2,3}$";
        if (Edit_Tbox_Email.Text.Length == 0 || Regex.IsMatch(Edit_Tbox_Email.Text, emailRegex))
        {
            cv_Email.IsValid = false;
        }
    }

But the problem here is that cv_Email_ServerValidate() doesn't even fire. Basically, it doesn't validate the Textbox. Also, I don't want to use the RequiredFieldValidator and RegularExpressionValidator. I want to combine their functionalities into just one validator. And as much as possible I would like to use the code behind(c#) only and not by jQuery. Thank You!

Upvotes: 0

Views: 796

Answers (1)

Joce Pedno
Joce Pedno

Reputation: 334

Your button have a ValidationGroup but your CustomValidator don't have one. If you want your button to valide it, you must set the same ValidationGroup.

Edit: You have to set ValidateEmptyText="true" otherwise, it won't validate empty value.

Upvotes: 1

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