<> (2)

8. 在最左侧显示行号

 view.CustomDrawRowIndicator += this.GridView_CustomDrawRowIndicator;

view.RowCountChanged  +=   this .GridView_RowCountChanged;

protected   void  GridView_CustomDrawRowIndicator( object  sender, RowIndicatorCustomDrawEventArgs e)
        {

            e.Appearance.TextOptions.HAlignment  =  DevExpress.Utils.HorzAlignment.Far;

             if  (e.Info.IsRowIndicator)
            {
                 if  (e.RowHandle  >=   0 )
                {
                    e.Info.DisplayText  =  (e.RowHandle  +   1 ).ToString();
                }
            }
        }

protected   void  GridView_RowCountChanged( object  sender, EventArgs e)
        {

        
            GridView gv  =  sender  as  GridView;
             if  (gv  ==   null )
                 return ;
             if  (gv.RowCount  <=   0 )
            {
                gv.IndicatorWidth  =   - 1 ;
            }
             else
            {
                gv.IndicatorWidth  =   25   +  Convert.ToInt32(Math.Floor(Math.Log(gv.RowCount,  10 ))  +   1 )  *   5 ;
            }
        }

 

 

 

9. 添加右键菜单

view.ShowGridMenu  +=   this .GridView_ShowGridMenu;


protected   void  GridView_ShowGridMenu( object  sender, GridMenuEventArgs e)
        {

             if  (e.MenuType  ==  DevExpress.XtraGrid.Views.Grid.GridMenuType.Column)
            {
                DevExpress.XtraGrid.Menu.GridViewColumnMenu menu  =  e.Menu  as  GridViewColumnMenu;

                DXMenuItem saveItem  =   new  DXMenuItem( " &Save Layout " ,  new  EventHandler(OnSaveLayoutMenuItemClicked));
                saveItem.BeginGroup  =   true ;
                saveItem.Tag  =  sender;
                menu.Items.Add(saveItem);

                DXMenuItem loadItem  =   new  DXMenuItem( " &Load Default Layout " ,  new  EventHandler(OnLoadDefaultLayoutMenuItemClicked));
                loadItem.Tag  =  sender;
                menu.Items.Add(loadItem);

                DXMenuItem exportToXlsItem  =   new  DXMenuItem( " &Export To Xls " ,  new  EventHandler(OnExportToXlsMenuItemClicked));
                exportToXlsItem.Tag  =  sender;
                menu.Items.Add(exportToXlsItem);

                DXMenuItem exportToXlsxItem  =   new  DXMenuItem( " E&xport To Xlsx " ,  new  EventHandler(OnExportToXlsxMenuItemClicked));
                exportToXlsxItem.Tag  =  sender;
                menu.Items.Add(exportToXlsxItem);

            }
        }

 

 

需要在ValidateRow事件中进行验证，效果（当右键点击column的时候，添加4个MenuItem）

 

10. 验证某行的输入值

需要在ValidateRow事件中进行验证

private   void  gridViewMain_ValidateRow( object  sender, DevExpress.XtraGrid.Views.Base.ValidateRowEventArgs e)
        {
             try
            {


                 if  ( string .IsNullOrEmpty(  this .gridViewMain.GetRowCellDisplayText(e.RowHandle , this .gridColumn1)))
                {
                     this .ShowExclamationMessage( " Must input gridColumn1. " );

                     this .gridViewMain.FocusedColumn  =   this .gridColumn1;

                    e.Valid  =   false ;

                     return ;

                }

             
            }
             catch  (Exception ex)
            {

                 this .ProcessException(ex);
            }
             finally
            {

            }
        }

 

 这样做了还是会弹出Grid自带的确认框，如果不要弹出再添加以下事件

         private   void  gridViewMain_InvalidRowException( object  sender, DevExpress.XtraGrid.Views.Base.InvalidRowExceptionEventArgs e)
        {

             try
            {
                e.ExceptionMode  =  DevExpress.XtraEditors.Controls.ExceptionMode.NoAction;

            }
             catch  (Exception ex)
            {

                 this .ProcessException(ex);
            }
             finally
            {
                
            }

        }

 

 

11. Binding的值可以是属性的属性（对泛型支持不好）

this.gridColumn4.FieldName = "Function.FunctionCode";

12. 导出到Excel完整代码(优化了速度)

private   static   void  ExportToEx(String filename,  string  ext, BaseView view)
        {
            Cursor currentCursor  =  Cursor.Current;

             try
            {
                Cursor.Current  =  Cursors.WaitCursor;
                 if  (ext  ==   " rtf " )
                {
                    view.ExportToRtf(filename);
                }
                 if  (ext  ==   " pdf " )
                {
                    view.ExportToPdf(filename);
                }
                 if  (ext  ==   " mht " )
                {
                    view.ExportToMht(filename);
                }
                 if  (ext  ==   " htm " )
                {
                    view.ExportToHtml(filename);
                }
                 if  (ext  ==   " txt " )
                {
                    view.ExportToText(filename);
                }
                 if  (ext  ==   " xls " )
                {

                    XlsExportOptions item  =   new  DevExpress.XtraPrinting.XlsExportOptions();
                    item.ShowGridLines  =   false ;
                    item.Suppress256ColumnsWarning  =   true ;
                    item.Suppress65536RowsWarning  =   true ;
                    item.ExportHyperlinks  =   false ;
                    item.TextExportMode  =  TextExportMode.Text;

                    view.ExportToXls(filename,item);
                }
                 if  (ext  ==   " xlsx " )
                {
                    XlsxExportOptions item = new  XlsxExportOptions(TextExportMode.Text , false  , false );
                    view.ExportToXlsx(filename, item);
                }
            }
             finally
            {
                Cursor.Current  =  currentCursor;
            }


        }

 

 

13. 删除一行记录

比如选中某一行的时候，你按CTRL+Del删除，需要在ProcessGridKey中处理

private   void  gridMain_ProcessGridKey( object  sender, KeyEventArgs e)
        {
             try
            {
                 if  (e.KeyCode  ==  Keys.Delete  &&  e.Control  &&   this .gridViewMain.FocusedRowHandle  >=   0 )
                {
                     object  item  =   this .gridViewMain.GetRow( this .gridViewMain.FocusedRowHandle) ;

                     if  (item  ==   null )
                    {
                         return ;
                    }
                     else
                    {
                         if  ( this .ShowYesNoQuestionMessage( string .Format( " Are you sure to delete the row? " ))  ==  DialogResult.Yes)
                        {

                             // do delete

                        }
                    }


                }
            }
             catch  (Exception ex)
            {

                 this .ProcessException(ex);
            }
             finally
            {

            }
        }

 

 

14. 设置某个单元格是否可编辑

光设置属性不可以的，只能设置整个GridView或某一列是否可编辑（Editable）.在ShowingEditor事件中处理

private   void  gridViewMain_ShowingEditor( object  sender, CancelEventArgs e)
        {
             try
            {


                 if  ( this .gridViewMain.FocusedRowHandle  <   0  )
                {
                     return ;
                }

                Object item  =   this .gridViewMain.GetRow( this .gridViewMain.FocusedRowHandle);

                 if  ( this .gridViewMain.FocusedColumn.Equals ( this .gridColumn1)  &&  Condition(item))
                {
                     // Item满足一定的条件,不允许编辑
                    e.Cancel  =   true ;
                     return ;
                }

                

            }
             catch  (Exception ex)
            {

                 this .ProcessException(ex);
            }
             finally
            {
                
            }
        }

 

 看灰机