Custom Validator

[Gonza]

Hi group, i'm trying to add a customvalidator control to a custom web
control. The problem is i'm getting a "Unable to find control id..."
exception. Here is the code:

public class CuitTextBox : WebControl
{
protected override void OnInit(EventArgs e)
{


base.OnInit(e);
}


protected override void OnPreRender(EventArgs e)
{
Control numericTextBox =
Page.LoadControl("~/WebControls/NumericTextBox.ascx");


TextBox underliyingText =
numericTextBox.FindControl("txtTextBox") as TextBox;


CustomValidator validator = new CustomValidator();


validator.ControlToValidate = underliyingText.ClientID;
validator.ErrorMessage = "El CUIT ingresado es invalido";
validator.ClientValidationFunction = "ValidateCuit";
validator.Visible = true;
validator.Enabled = true;
validator.EnableClientScript = true;


Controls.Add(validator);
Controls.Add(numericTextBox);


PageUIHelper.RegisterJsUtilFile(Page);


base.OnPreRender(e);
}
}


Thanks in advance for any help

 

[Riki]

Don't use the ClientID in
validator.ControlToValidate = underliyingText.ClientID;

Just use the Server ID:
validator.ControlToValidate = underliyingText;