【转】DEV GridControl小结。。 

来自：http://www.cnblogs.com/yuerdongni/archive/2012/09/08/2676753.html

 

1、 如何解决单击记录整行选中的问题

View->OptionsBehavior->EditorShowMode 设置为：Click

2、 如何新增一条记录

(1)、gridView.AddNewRow()

(2)、实现 gridView_InitNewRow 事件

3、如何解决 GridControl 记录能获取而没有显示出来的问题

gridView.populateColumns();

4、如何让行只能选择而不能编辑（或编辑某一单元格）

(1)、View->OptionsBehavior->EditorShowMode 设置为：Click

(2)、View->OptionsBehavior->Editable 设置为：false

5、如何禁用 GridControl 中单击列弹出右键菜单

设置 Run Design->OptionsMenu->EnableColumnMenu 设置为：false

6、如何隐藏 GridControl 的 GroupPanel 表头

设置 Run Design->OptionsView->ShowGroupPanel 设置为：false

7、如何禁用 GridControl 中列头的过滤器 过滤器如下图所示：    

设置 Run Design->OptionsCustomization->AllowFilter 设置为：false

8、如何在查询得到 0 条记录时显示自定义的字符提示/显示 如图所示：

方法如下：

//When no Records Are Being Displayed

private void gridView1_CustomDrawEmptyForeground(object sender, CustomDrawEventArgs e)

{

//方法一（此方法为GridView设置了数据源绑定时，可用）

ColumnView columnView = sender as ColumnView;

BindingSource bindingSource = this.gridView1.DataSource as BindingSource;

if(bindingSource.Count == 0)

{

string str = "没有查询到你所想要的数据!";

Font f = new Font("宋体", 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（此方法为GridView没有设置数据源绑定时，使用，一般使用此种方 法）

if (this._flag)

{ if (this.gridView1.RowCount == 0)

{ string str = "没有查询到你所想要的数据!"; Font f = new Font("宋体", 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、如何显示水平滚动条？或

设置 this.gridView.OptionsView.ColumnAutoWidth = false;

.....列表宽度自适应内容

gridview1.BestFitColumns();

10、如何定位到第一条数据/记录？

设置 this.gridView.MoveFirst()

11、如何定位到下一条数据/记录？ 设置 this.gridView.MoveNext()

12、如何定位到最后一条数据/记录？

设置 this.gridView.MoveLast()

13、设置成一次选择一行，并且不能被编辑

this.gridView1.FocusRectStyle = DevExpress.XtraGrid.Views.Grid.DrawFocusRectStyle.RowFocus;

this.gridView1.OptionsBehavior.Editable = false;

this.gridView1.OptionsSelection.EnableAppearanceFocusedCell = false;

14、如何显示行号？   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、如何让各列头禁止移动？

设置 gridView1.OptionsCustomization.AllowColumnMoving = false;

16、如何让各列头禁止排序？

设置 gridView1.OptionsCustomization.AllowSort = false;

17、如何禁止各列头改变列宽？

设置 gridView1.OptionsCustomization.AllowColumnResizing = false;

18.拖动滚动条时固定某一列

设置Columns，选择要固定的列。设置Fixed属性，可以选择：固定在左边、固定在右边、不固定。

19.获取选定行,指定列单元格的内容

      return gridView1.GetRowCellValue(pRows[0], ColumName).ToString ();

20.分组显示

OptionsView>OptionsBehavior>AutoExpandAllGroups = True 选择要分组的列，将GroupIndex属性设置为0

21.格式化数据

       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 = "合格数量必须为大于等于0小于等于接货数量的整数！";                 }                 else                 {                     if (int.Parse(passQty) > receiveQty)                     {                         e.Valid = false;                         e.ErrorText = "合格数量必须为大于0小于等于接货数量的整数！";                     }                 }             }

}

 

22.合并表头

   ///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是表格上的默认视图，注意这里声明的是：BandedGridView             BandedGridView view = advBandedGridView1 as BandedGridView;             view.BeginUpdate(); //开始视图的编辑，防止触发其他事件             view.BeginDataUpdate(); //开始数据的编辑             view.Bands.Clear();

            view.OptionsView.ShowColumnHeaders = false;                         //因为有Band列了，所以把ColumnHeader隐藏             //添加列标题       //添加列标题
            GridBand bandID = view.Bands.AddBand("ID");             bandID.Visible =false; //隐藏ID列
            GridBand bandName = view.Bands.AddBand("姓名");             GridBand bandSex = view.Bands.AddBand("性别");             GridBand bandBirth = view.Bands.AddBand("出生日期");             GridBand bandScore = view.Bands.AddBand("分数");             GridBand bandMath = bandScore.Children.AddBand("数学");             GridBand bandChinese = bandScore.Children.AddBand("语文");             GridBand bandEnglish = bandScore.Children.AddBand("英语");             GridBand bandSubTotal = bandScore.Children.AddBand("小计");             GridBand bandRemark = view.Bands.AddBand("备注");

            bandFile.AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;//这是合并表头居中显示             view.EndDataUpdate();//结束数据的编辑             view.EndUpdate();   //结束视图的编辑         }

具体可看

dev gridcontrol 合并表头

 

23.   //动态添加列             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。设置自动增加的行号

  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种view 型式，普通的是gridview，然后分别为cardview、BandedView、Advanced BandedView、LayoutView；共5种。

  1）、view组中把OptionView下的viewmode 设置成“Carousel”就达到这种“旋转木马”式的gridcontrol view 特效了   2）、layoutView1.OptionsCarouselMode.PitchAngle 这个属性决定“旋转木马”的pitch angle 螺距角; 螺旋角; 螺旋升角; 俯仰角; 倾角; 节锥半角   3）、Roll Angle 属性决定着 倾侧角度   4）、指定数据源，显示数据：   //显示数据         private void showData(List 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;         }

        //返回图片的字节流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.检查数据的有效性

  在gridview的ValidateRow事件中加入检查代码：   #region 检查数据   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"], "必须指定日期");   }

  }

 

27.设某一列文字和标题局中显示                     gridView1.Columns[0].AppearanceHeader.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;    gridView1.Columns[0].AppearanceCell.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Center;

28.列表过滤条件多选

列名.OptionsFilter.FilterPopupMode= DevExpress.XtraGrid.Columns.FilterPopupMode.CheckedList

29.隔行换色的方法

 

this.gridView1.Appearance.OddRow.BackColor = Color.White;  // 设置奇数行颜色 // 默认也是白色 可以省略 this.gridView1.OptionsView.EnableAppearanceOddRow = true;   // 使能 // 和和上面绑定 同时使用有效 this.gridView1.Appearance.EvenRow.BackColor = Color.WhiteSmoke; // 设置偶数行颜色 this.gridView1.OptionsView.EnableAppearanceEvenRow = true;   // 使能 // 和和上面绑定 同时使用有效