DevExpress使用教程：XtraGridControl动态添加右键菜单

在使用 GridControl 的时候经常需要添加右键菜单。一般的做法是自己创建菜单项，然后注册GridView的Mouse-Click事件，然后Show出定义好的菜单。但是涉及到一些单击事件会收到编辑器编辑状态影响，所以Mouse-Click事件不好用。

幸好，GridView自带了一个默认的右键事件，专门用于弹出右键菜单用：PopupMenuShowing

为了调用方便，设计成一个静态方法，调用的时候只用传入需要注册的网格就好：

GridViewMenuHelper.CreateCopyCellItem(gdvw);

这里，为传入网格添加一个名为【复制XXX】(XXX为列头)的方法，可以将鼠标点中的Cell中的数据复制到剪贴板。

效果图如下：

实现代码如下：

#region 添加复制Cell菜单

        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

补充：

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 添加复制Cell菜单

       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

   }

使用：Load事件增加

GridViewCreateNewCellItem.CreateClearCellItem(gv_Wool);

GridViewCreateNewCellItem.CreateClearCellItem(gv_Ast);

GridViewCreateNewCellItem.CreateClearCellItem(gv_ZJ);

GridViewCreateNewCellItem.CreateClearCellItem(gv_Process2);

GridViewCreateNewCellItem.CreateClearCellItem(gv_SpecialProcess);

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

Via GarsonZhang

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