DevExpress实用心得：XtraGridControl动态添加右键菜
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);