DevExpress tutorial: XtraGridControl dynamically add right-click menu

When using  GridControl  , it is often necessary to add a right-click menu. The general practice is to create the menu item yourself, then register the Mouse-Click event of the GridView, and then show the defined menu. However, some click events will be affected by the editor editing state, so the Mouse-Click event is not easy to use.

Fortunately, GridView comes with a default right-click event, which is specially used to pop up the right-click menu: PopupMenuShowing

For the convenience of calling, it is designed as a static method. When calling, just pass in the grid that needs to be registered:

GridViewMenuHelper.CreateCopyCellItem(gdvw);

Here, add a method named [Copy XXX] (XXX is the column header) for the incoming grid, which can copy the data in the Cell at the mouse point to the clipboard.

The effect diagram is as follows:

The implementation code is as follows:

#region Add copy Cell menu
        public static void CreateCopyCellItem(GridView View)
        {
            View.PopupMenuShowing += new PopupMenuShowingEventHandler(Create_CopyCellItem);
        }

        static void Create_CopyCellItem(object sender, PopupMenuShowingEventArgs e)
        {
            if (e.MenuType == DevExpress.XtraGrid.Views.Grid.GridMenuType.Row)
            {
                if (e.HitInfo.InRowCell)
                {
                    e.Menu.Items.Add(CreateCopyMenuItem((GridView)sender, e.HitInfo.RowHandle, e.HitInfo.Column));
                }
            }
        }

        static DXMenuItem CreateCopyMenuItem(GridView view, int rowHandle, GridColumn column)
        {
            DXMenuItem copyitem = new DXMenuItem("复制" + column.Caption,
                new EventHandler(OnCopyCellClick), null);
            copyitem.Tag = column;
            return copyitem;

        }

        static void OnCopyCellClick(object sender, EventArgs e)
        {
            GridColumn col = (GridColumn)((DXMenuItem)sender).Tag;
            string filed = col.FieldName;
            Clipboard.SetDataObject(col.View.GetRowCellDisplayText(col.View.FocusedRowHandle, col), true);
        }
        #endregion

Replenish:

public class GridViewAddPopupMenuBase
   {

       EventHandler OnClearCellClick;
       string MenuName;

       public static void CreateNewCellItem(GridView View, string cMenuName, EventHandler DoClearCellClick)
       {
           GridViewAddPopupMenuBase gb = new GridViewAddPopupMenuBase();
           gb.OnClearCellClick = DoClearCellClick;
           gb.MenuName = cMenuName;


           View.PopupMenuShowing += new PopupMenuShowingEventHandler(gb.Create_NewCellItem);
       }
       void Create_NewCellItem(object sender, PopupMenuShowingEventArgs e)
       {
           if (e.MenuType == DevExpress.XtraGrid.Views.Grid.GridMenuType.Row)
           {
               if (((GridView)sender).OptionsBehavior.Editable == true)
               {
                   if (e.HitInfo.InRowCell && e.HitInfo.Column.OptionsColumn.AllowEdit == true)
                   {
                       e.Menu.Items.Add(CreateNewMenuItem((GridView)sender, e.HitInfo.RowHandle, e.HitInfo.Column));
                   }
               }
           }
       }

       DXMenuItem CreateNewMenuItem(GridView view, int rowHandle, GridColumn column)
       {
           DXMenuItem copyitem = new DXMenuItem(MenuName.Replace("[Caption]", column.Caption.Replace("\r\n","")),
               new EventHandler(OnClearCellClick), null);
           copyitem.Tag = column;
           return copyitem;

       }


   }
   public class GridViewCreateNewCellItem : GridViewAddPopupMenuBase
   {
       #region Add copy Cell menu
       public static void CreateClearCellItem(GridView View)
       {
           CreateNewCellItem(View, "清除[Caption]", DoClear);
       }

       private static void DoClear(object sender, EventArgs e)
       {
           GridColumn col = (GridColumn)((DXMenuItem)sender).Tag;
           col.View.SetRowCellValue(col.View.FocusedRowHandle, col, DBNull.Value);
       }


       #endregion
   }

Use: Load event to increase

GridViewCreateNewCellItem.CreateClearCellItem(gv_Wool);
GridViewCreateNewCellItem.CreateClearCellItem(gv_Ast);
GridViewCreateNewCellItem.CreateClearCellItem(gv_ZJ);
GridViewCreateNewCellItem.CreateClearCellItem(gv_Process2);
GridViewCreateNewCellItem.CreateClearCellItem(gv_SpecialProcess);

Demo download: http://pan.baidu.com/s/1bnCijtP

Via GarsonZhang

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