Question

I have a RadEditor and I’m trying to add a CustomValidator to it, as so:

protected override void OnInit(EventArgs e)
{
    var validator = new CustomValidator();
    validator.CssClass = "validator-error";
    validator.Display = ValidatorDisplay.Dynamic;
    validator.ControlToValidate = ".";
    validator.Text = "You've exceeded the maximum allowed length for this field";
    validator.ClientValidationFunction = "radEditorCheckLength";

    this.Controls.Add(validator);

    base.OnInit(e);
}

Which works fine, however when it renders, the validator is actually rendering inside the RadEditor. How do I make it appear before the RadEditor element?

Answer 1

This is a total hack. Does it work?

protected override void Render(HtmlTextWriter writer)
{
    this.validator.RenderControl(writer);
    this.validator.Visible = false;
    base.Render(writer);
    this.validator.Visible = true;
}

You’ll need to store your CustomValidator in a field:

private CustomValidator validator;

protected override void OnInit(EventArgs e)
{
    this.validator = new CustomValidator();
    // ...
}

(I disassembled RadEditor in Reflector, but I didn’t see an easy way to modify RenderChildren to skip rendering the validator.)