void setRegularExpressionValidator_Click(object sender, EventArgs e)
        {
            Template template = Template.CreateGridTemplate(1);

            RegularExpressionValidator regularExpressionValidator = new RegularExpressionValidator();
            //Define a regular expression for currency values.
            regularExpressionValidator.Expression = @"^-?\d+(\.\d{2})?$";
            regularExpressionValidator.RegexOptions = System.Text.RegularExpressions.RegexOptions.CultureInvariant;

            FocusProcess focusProcess = new FocusProcess();
            focusProcess.PreventFocusLeave = true;
            //When CurrentCell moves to another Row, the action is done.
            focusProcess.DoActionReason = ValidateReasons.RowValidating;

            regularExpressionValidator.Actions.Add(focusProcess);

            template.Row.Cells[0].Validators.Add(regularExpressionValidator);

            this.gcMultiRow1.Template = template;
            label .Text = @"The RegularExpressionValidator.Expression is '^-?\d+(\.\d{2})?$', which expresses a currency 
value, input '-!2.05', then move CurrentCell to another Row to trigger validation (DoActionReasion is RowValidating), the 
focus cannot move, input '-12.05', the focus moves to another Row.";
        }