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DEV GridControl小結

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1、 如何解決單擊記錄整行選中的問題
View->OptionsBehavior->EditorShowMode 設置為:Click
 
2、 如何新增一條記錄
(1)、gridView.AddNewRow()
(2)、實現 gridView_InitNewRow 事件
 
3、如何解決 GridControl 記錄能獲取而沒有顯示出來的問題
gridView.populateColumns();
 
4、如何讓行只能選擇而不能編輯(或編輯某一單元格)
(1)、View->OptionsBehavior->EditorShowMode 設置為:Click
(2)、View->OptionsBehavior->Editable 設置為:false
5、如何禁用 GridControl 中單擊列彈出右鍵菜單 設置 Run Design->OptionsMenu->EnableColumnMenu 設置為:false 6、如何隱藏 GridControl 的 GroupPanel 表頭 設置 Run Design->OptionsView->ShowGroupPanel 設置為:false 7、如何禁用 GridControl 中列頭的過濾器 過濾器如下圖所示: 設置 Run Design->OptionsCustomization->AllowFilter 設置為:false 8
、如何在查詢得到 0 條記錄時顯示自定義的字符提示/顯示 如圖所示: 方法如下: //When no Records Are Being Displayed private void gridView1_CustomDrawEmptyForeground(object sender, CustomDrawEventArgs e) { //方法一(此方法為GridView設置了數據源綁定時,可用) ColumnView columnView = sender as ColumnView; BindingSource bindingSource = this.gridView1.DataSource as
BindingSource; if(bindingSource.Count == 0) { string str = "沒有查詢到你所想要的數據!"; Font f = new Font("宋體", 10, FontStyle.Bold); Rectangle r = new Rectangle(e.Bounds.Top + 5, e.Bounds.Left + 5, e.Bounds.Right - 5, e.Bounds.Height - 5); e.Graphics.DrawString(str, f, Brushes.Black, r); } //方法二(此方法為GridView沒有設置數據源綁定時,使用,一般使用此種方 法) if (this._flag) { if (this.gridView1.RowCount == 0) { string str = "沒有查詢到你所想要的數據!"; Font f = new Font("宋體", 10, FontStyle.Bold); Rectangle r = new Rectangle(e.Bounds.Left + 5, e.Bounds.Top + 5, e.Bounds.Width - 5, e.Bounds.Height - 5); e.Graphics.DrawString(str, f, Brushes.Black, r); } } } 9、如何顯示水平滾動條?或 設置 this.gridView.OptionsView.ColumnAutoWidth = false; .....列表寬度自適應內容 gridview1.BestFitColumns(); 10、如何定位到第一條數據/記錄? 設置 this.gridView.MoveFirst() 11、如何定位到下一條數據/記錄? 設置 this.gridView.MoveNext() 12、如何定位到最後一條數據/記錄? 設置 this.gridView.MoveLast() 13、設置成一次選擇一行,並且不能被編輯 this.gridView1.FocusRectStyle = DevExpress.XtraGrid.Views.Grid.DrawFocusRectStyle.RowFocus; this.gridView1.OptionsBehavior.Editable = false; this.gridView1.OptionsSelection.EnableAppearanceFocusedCell = false; 14、如何顯示行號? private void gvPayList_CustomDrawRowIndicator(object sender, DevExpress.XtraGrid.Views.Grid.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(); } else if (e.RowHandle < 0 && e.RowHandle > -1000) { e.Info.Appearance.BackColor = System.Drawing.Color.AntiqueWhite; e.Info.DisplayText = "G" + e.RowHandle.ToString(); } } } 15、如何讓各列頭禁止移動? 設置 gridView1.OptionsCustomization.AllowColumnMoving = false; 16、如何讓各列頭禁止排序? 設置 gridView1.OptionsCustomization.AllowSort = false; 17、如何禁止各列頭改變列寬? 設置 gridView1.OptionsCustomization.AllowColumnResizing = false; 18.拖動滾動條時固定某一列 設置Columns,選擇要固定的列。設置Fixed屬性,可以選擇:固定在左邊、固定在右邊、不固定。 19.獲取選定行,指定列單元格的內容 return gridView1.GetRowCellValue(pRows[0], ColumName).ToString (); 20.分組顯示 OptionsView>OptionsBehavior>AutoExpandAllGroups = True 選擇要分組的列,將GroupIndex屬性設置為0 21.格式化數據 private void gvList_ValidatingEditor(object sender, DevExpress.XtraEditors.Controls.BaseContainerValidateEditorEventArgs e) { if (this.gvList.FocusedColumn.FieldName == "passQty") { string passQty = e.Value.ToString().Trim(); int receiveQty = orderDetailList[this.gvList.FocusedRowHandle].qty; if (!JXType.IsIntBigThanZero(passQty)) { e.Valid = false; e.ErrorText = "合格數量必須為大於等於0小於等於接貨數量的整數!"; } else { if (int.Parse(passQty) > receiveQty) { e.Valid = false; e.ErrorText = "合格數量必須為大於0小於等於接貨數量的整數!"; } } } } 22.合並表頭 ///初始化表格 using DevExpress.XtraGrid.Columns; using DevExpress.XtraGrid.Views.Base; using DevExpress.XtraGrid.Views.BandedGrid; using DevExpress.XtraEditors.Repository; private void InitGrid() { // advBandedGridView1是表格上的默認視圖,註意這裏聲明的是:BandedGridView BandedGridView view = advBandedGridView1 as BandedGridView; view.BeginUpdate(); //開始視圖的編輯,防止觸發其他事件 view.BeginDataUpdate(); //開始數據的編輯 view.Bands.Clear(); view.OptionsView.ShowColumnHeaders = false; //因為有Band列了,所以把ColumnHeader隱藏 //添加列標題 //添加列標題 GridBand bandID = view.Bands.AddBand("ID"); bandID.Visible = false; //隱藏ID列 GridBand bandName = view.Bands.AddBand("姓名"); GridBand bandSex = view.Bands.AddBand("性別"); GridBand bandBirth = view.Bands.AddBand("出生日期"); GridBand bandScore = view.Bands.AddBand("分數"); GridBand bandMath = bandScore.Children.AddBand("數學"); GridBand bandChinese = bandScore.Children.AddBand("語文"); GridBand bandEnglish = bandScore.Children.AddBand("英語"); GridBand bandSubTotal = bandScore.Children.AddBand("小計"); GridBand bandRemark = view.Bands.AddBand("備註"); bandFile.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;//這是合並表頭居中顯示 view.EndDataUpdate();//結束數據的編輯 view.EndUpdate(); //結束視圖的編輯 } 具體可看 dev gridcontrol 合並表頭 23. //動態添加列 DevExpress.XtraGrid.Columns.GridColumn Col1 = new DevExpress.XtraGrid.Columns.GridColumn(); Col1.FieldName = "name"; Col1.Caption = "名字"; Col1.Visible = false; Col1.VisibleIndex = gvCountry.Columns.Count; gvCountry.Columns.Add(Col1); 24。設置自動增加的行號 private void gridview_CustomDrawRowIndicator(object sender, DevExpress.XtraGrid.Views.Grid.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(); } else if (e.RowHandle < 0 && e.RowHandle > -1000) { e.Info.Appearance.BackColor = System.Drawing.Color.AntiqueWhite; e.Info.DisplayText = "G" + e.RowHandle.ToString(); } } } 25.特效:gridcontrol中有5種view 型式,普通的是gridview,然後分別為cardview、BandedView、Advanced BandedView、LayoutView;共5種。 1)、view組中把OptionView下的viewmode 設置成“Carousel”就達到這種“旋轉木馬”式的gridcontrol view 特效了 2)、layoutView1.OptionsCarouselMode.PitchAngle 這個屬性決定“旋轉木馬”的pitch angle 螺距角; 螺旋角; 螺旋升角; 俯仰角; 傾角; 節錐半角 3)、Roll Angle 屬性決定著 傾側角度 4)、指定數據源,顯示數據: //顯示數據 private void showData(List<Employee > list) { DataTable dt = new DataTable("OneEmployee"); dt.Columns.Add("Caption", System.Type.GetType("System.String")); dt.Columns.Add("Department", System.Type.GetType("System.String")); dt.Columns.Add("PhotoName", System.Type.GetType("System.Byte[]")); for (int i = 0; i < list.Count; i++) { DataRow dr = dt.NewRow(); dr["Caption"] = list[i].Name; dr["Department"] = list[i].Department; string imagePath = @"D:\C#\photos\" + list[i].PhotoPath; dr["PhotoName"] = getImageByte(imagePath); dt.Rows.Add(dr); } gridControl1.DataSource = dt; } //返回圖片的字節流byte[] private byte[] getImageByte(string imagePath) { FileStream files = new FileStream(imagePath, FileMode.Open); byte[] imgByte = new byte [files.Length ]; files.Read(imgByte, 0, imgByte.Length); files.Close(); return imgByte; } 26.檢查數據的有效性 在gridview的ValidateRow事件中加入檢查代碼: #region 檢查數據 private void gridView1_ValidateRow(object sender, ValidateRowEventArgs e) { GridView view = sender as GridView; view.ClearColumnErrors(); if (view.GetRowCellValue(e.RowHandle, "ReceiveDate") == DBNull.Value) { e.Valid = false; view.SetColumnError(view.Columns["ReceiveDate"], "必須指定日期"); } } 27.設某一列文字和標題局中顯示 gridView1.Columns[0].AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center; gridView1.Columns[0].AppearanceCell.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center; 28.列表過濾條件多選 列名.OptionsFilter.FilterPopupMode= DevExpress.XtraGrid.Columns.FilterPopupMode.CheckedList 29.隔行換色的方法 this.gridView1.Appearance.OddRow.BackColor = Color.White; // 設置奇數行顏色 // 默認也是白色 可以省略 this.gridView1.OptionsView.EnableAppearanceOddRow = true; // 使能 // 和和上面綁定 同時使用有效 this.gridView1.Appearance.EvenRow.BackColor = Color.WhiteSmoke; // 設置偶數行顏色 this.gridView1.OptionsView.EnableAppearanceEvenRow = true; // 使能 // 和和上面綁定 同時使用有效

DEV GridControl小結