DEV GridControl小結


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、如何定位到最后一條數據/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,注意這里聲明的是: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("備注");
 
            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,然后分別為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 屬性決定着 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

 


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