RadMaskedEditBox using Email MaskType. How to prevent user from leaving field when it fails validation

[Gone2TheDogs]

Regarding the RadMaskedEditBox using the provided Email MaskType:

The error validation icon displays when there is an error, but it doesn't prevent the user from leaving the field. 

How can I prevent the user from leaving the field with this MaskType?

 

 

[Dinko | Tech Support Engineer]

Hello Bob Neuendorf

Thank you for reaching out to us.

What I can suggest to try is to cancel the Validating event of the control. The Provider of the RadMaskedEditBox.MaskedEditBoxElement exposes the Validate() method which you can use in code:

this.radMaskedEditBox1.Validating += RadMaskedEditBox1_Validating;

private void RadMaskedEditBox1_Validating(object sender, System.ComponentModel.CancelEventArgs e)
{
    bool isValid = ((EMailMaskTextBoxProvider)this.radMaskedEditBox1.MaskedEditBoxElement.Provider).Validate(this.radMaskedEditBox1.MaskedEditBoxElement.Text);
    if (!isValid)
    {
        e.Cancel = true;
    }
}

I hope that this approach will work for you.

Regards,
Dinko | Tech Support Engineer
Progress Telerik

[Gone2TheDogs]

Perfect. Thanks!