C# DEV XtraGrid

知识点一 显示XtraGrid.GridView的滚动条

要点：设定ColumnAutoWith选项为false和ShowHorzLines选项为True

具体步骤：GridView的Main-->Views-->OptionsView-->ColumnAutoWith选项为false和ShowHorzLines选项为True

另外的方法，在要改的Designer.cs中，直接更改列宽

 知识点二 删除XtraGrid.GridView选中的行 ，使用this.GridViewSalesOrder.DeleteSelectedRows();

        /// <summary>
        /// 删除方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void item_Click(object sender, EventArgs e)
        {
            //this.GridSalesOrder.cu
            int[] selectRow = this.GridViewSalesOrder.GetSelectedRows();

            if (selectRow.Length < 0)
            {
                MessageBox.Show("请选择删除的行！");
                return;
            }

            this.GridViewSalesOrder.DeleteSelectedRows();
            //for (int i = 0; i < selectRow.Length; i++)
            //{
            //    dtTmpGoods.Rows[i].Delete();
            //    dtTmpGoods.AcceptChanges();
            //}
            MessageBox.Show("删除成功！");
            //把临时的数据表填充到商品列表中
            GridSalesOrder.DataSource = dtTmpGoods;
            CalculateSaleOrder();
        }

知识点三 右键出现菜单。使用XtraGrid.GridView的PopupMenuShowing事件

       /// <summary>
        /// 右键菜单
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void GridViewSalesOrder_PopupMenuShowing(object sender, DevExpress.XtraGrid.Views.Grid.PopupMenuShowingEventArgs e)
        {
            string strMenuId = this.Tag.ToString();
            DXMenuItem item = new DXMenuItem(" 删除");
            item.Click += new EventHandler(item_Click);
            if (e.Menu != null && e.MenuType == DevExpress.XtraGrid.Views.Grid.GridMenuType.Row)
            {
                e.Menu.Items.Insert(0, item);
            }
        }

        /// <summary>
        /// 删除方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void item_Click(object sender, EventArgs e)
        {
            //this.GridSalesOrder.cu
            int[] selectRow = this.GridViewSalesOrder.GetSelectedRows();

            if (selectRow.Length < 0)
            {
                MessageBox.Show("请选择删除的行！");
                return;
            }

            this.GridViewSalesOrder.DeleteSelectedRows();
            //for (int i = 0; i < selectRow.Length; i++)
            //{
            //    dtTmpGoods.Rows[i].Delete();
            //    dtTmpGoods.AcceptChanges();
            //}
            MessageBox.Show("删除成功！");
            //把临时的数据表填充到商品列表中
            GridSalesOrder.DataSource = dtTmpGoods;
            CalculateSaleOrder();
        }

知识点四  Grid中的列显示N位小数，本例子中显示4位

显示效果：

所需设定，在设计模式下，选中列-->外观这个属性