public CellValidatorDemo()
        {
            this.Text = "CellValidator Demo";
            this.Size = new Size(660, 300);

            // Initial flow layout panel and add to form.
            this.panel.Dock = DockStyle.Left;
            this.panel.Size = new Size(200, 200);
            this.panel.FlowDirection = FlowDirection.TopDown;
            this.panel.WrapContents = false;
            this.panel.Padding = new Padding(5);
            this.panel.AutoSize = true;
            this.Controls.Add(panel);

            // Add MultiRow to form
            this.gcMultiRow1.Dock = DockStyle.Left;
            this.gcMultiRow1.Width = 400;
            this.Controls.Add(this.gcMultiRow1);

            label.Height = 50;
            label.Dock = DockStyle.Bottom;
            label.BackColor = SystemColors.Info;
            label.Text = "Please Click one button to add one CellValidator and set one CellValidateAction.";
            this.Controls.Add(label);

            this.Load += new EventHandler(Form1_Load);

            InitButton();

            this.StartPosition = FormStartPosition.CenterScreen;
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            gcMultiRow1.Template = Template.CreateGridTemplate(1);
            gcMultiRow1.RowCount = 5;
        }
		
		void setRangeValidator_Click(object sender, EventArgs e)
        {
            Template template = Template.CreateGridTemplate(1);

            //Create one RangeValidator to validate whether the committed value is in range.
            RangeValidator rangValidator = new RangeValidator();
            //Set the RequiredType first, then set other Properties.
            rangValidator.RequiredType = typeof(int);
            rangValidator.MinValue = 5;
            rangValidator.MaxValue = 10;
            rangValidator.NullIsValid = false;

            LineNotify lineNotifyAction = new LineNotify();
            //When you end edit mode, the action is done (press Enter key)
            lineNotifyAction.DoActionReason = ValidateReasons.EndEdit;
            lineNotifyAction.LineColor = Color.Red;

            rangValidator.Actions.Add(lineNotifyAction);

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

            this.gcMultiRow1.Template = template;
            label.Text = "The RangeValidator's MinValue is 5, MaxValue is 10, input 4 (not in the range) in one cell, press 
Enter key to trigger validation (DoActionReason is EndEdit), a red underline is shown.";
        }