public RadForm1()
        {
            InitializeComponent();
             

            this.radDataLayout1.EditorInitializing += radDataLayout1_EditorInitializing; 

            this.radDataLayout1.DataSource = new Employee()
            {
                FirstName = "Sarah",
                LastName = "Blake",
                Occupation = "Supplied Manager",
                StartingDate = new DateTime(2005, 04, 12),
                IsMarried = true,
                Salary = 3500,
                Gender = Gender.Female
            };
        } 
        RadMaskedEditBox radMaskedEditBox;

        void radDataLayout1_EditorInitializing(object sender, Telerik.WinControls.UI.EditorInitializingEventArgs e)
        {
            if (e.Property.Name == "Salary")
            {
                radMaskedEditBox = new RadMaskedEditBox();
                radMaskedEditBox.DataBindings.Add(new Binding("Value", this.radDataLayout1.DataSource, "Salary",
                    true, DataSourceUpdateMode.OnPropertyChanged));
                radMaskedEditBox.MaskType = MaskType.Numeric;
                radMaskedEditBox.MaskedEditBoxElement.StretchVertically = true;
                e.Editor = radMaskedEditBox;
            }
        } 
        
        private class Employee
        {
            public string FirstName { get; set; }

            public string LastName { get; set; }

            public string Occupation { get; set; }

            public DateTime StartingDate { get; set; }

            public bool IsMarried { get; set; }

            public int Salary { get; set; }

            public Gender Gender { get; set; }
        }

        private enum Gender
        {
            Female,
            Male
        }