Disable auto round for decimal

        public RadForm1()
        {
            InitializeComponent();

            List<Item> items = new List<Item>();
            for (int i = 0; i < 10; i++)
            {
                items.Add(new Item(i,"Item" + i, i * 1.33m));
            }
            this.radGridView1.DataSource = items;
            this.radGridView1.AutoSizeColumnsMode = Telerik.WinControls.UI.GridViewAutoSizeColumnsMode.Fill;
            
            GridViewDecimalColumn idColumn = this.radGridView1.Columns["Id"] as GridViewDecimalColumn;
            idColumn.DataType = typeof(int);
            idColumn.DecimalPlaces = 0;
            idColumn.FormatString = "{0:N0}";

            GridViewDecimalColumn priceColumn = this.radGridView1.Columns["Price"] as GridViewDecimalColumn;
            priceColumn.DataType = typeof(decimal);
            priceColumn.DecimalPlaces = 2;
            priceColumn.FormatString = "{0:N2}";

            GridViewMaskBoxColumn maskBoxColumn = new GridViewMaskBoxColumn("Masked_Id"); 
            maskBoxColumn.FieldName = "Id"; 
            maskBoxColumn.MaskType = MaskType.Numeric;
            maskBoxColumn.Mask = "N0"; 
            maskBoxColumn.FormatString = "{0:N0}";
            maskBoxColumn.DataType = typeof(int);
            radGridView1.MasterTemplate.Columns.Add(maskBoxColumn);

            maskBoxColumn = new GridViewMaskBoxColumn("Masked_Price");
            maskBoxColumn.FieldName = "Price";
            maskBoxColumn.MaskType = MaskType.Numeric;
            maskBoxColumn.Mask = "N2";
            maskBoxColumn.FormatString = "{0:N2}";
            maskBoxColumn.DataType = typeof(decimal);
            radGridView1.MasterTemplate.Columns.Add(maskBoxColumn);

            this.radGridView1.CellEditorInitialized += radGridView1_CellEditorInitialized;
        }

        private void radGridView1_CellEditorInitialized(object sender, GridViewCellEventArgs e)
        {
            GridSpinEditor spinEditor = e.ActiveEditor as GridSpinEditor;
            if (spinEditor != null)
            {
                RadSpinEditorElement el = spinEditor.EditorElement as RadSpinEditorElement;
                if (this.radGridView1.CurrentColumn.Name == "Id")
                {
                    el.DecimalPlaces = 0;
                }
                else
                {
                    el.DecimalPlaces = 2;
                }
            }
        }

        public class Item
        {
            public int Id { get; set; }

            public string Name { get; set; }

            public decimal Price { get; set; }

            public Item(int id, string name, decimal price)
            {
                this.Id = id;
                this.Name = name;
                this.Price = price;
            }
        }