c#开发_Dev的关于XtraGrid的使用（GridControl小结）

1，增加新行用InitNewRow事件,给新行某字段赋值。后结束编辑。

private void grdView_InitNewRow(object sender, DevExpress.XtraGrid.Views.Grid.InitNewRowEventArgs e)
    {
     DevExpress.XtraGrid.Views.Grid.GridView view = sender as DevExpress.XtraGrid.Views.Grid.GridView;
     view.SetRowCellValue(e.RowHandle, view.Columns["EnterID"], this.dS_MEnterStoreView.MEnterStore[0].ID);
     this.grdControl.EmbeddedNavigator.Buttons.EndEdit.DoClick();
     this.grdView.UpdateCurrentRow();
    }

2，如果进行行验证，就在换行时时行，用grdView_FocusedRowChanged事件

private void grdView_FocusedRowChanged(object sender, DevExpress.XtraGrid.Views.Base.FocusedRowChangedEventArgs e)
    {
     WsClient.WS_MEnterStore.DS_MEnterStoreView.MEnterDetailRow row = (WsClient.WS_MEnterStore.DS_MEnterStoreView.MEnterDetailRow)this.grdView.GetDataRow(e.FocusedRowHandle);
    
     if (row != null)
     {
      if ((this.OperState == Common.Enum.TOperState.UnConfirmNew)
       || (this.OperState == Common.Enum.TOperState.UnConfirmEdit))
      {
       this.InitComboBoxValue(row, row.IsGoodIDNull()?0:row.GoodID, false);
       this.InitBatchComboBoxValue(row, row.IsGoodIDNull()?0:row.GoodID, false);
      }
     }
    }

3,如果需要改变行的某一列的同时改变其它的列用grdView_CellValueChanged事件

private void grdView_CellValueChanged(object sender, DevExpress.XtraGrid.Views.Base.CellValueChangedEventArgs e)
    {
     if (this.grdView.FocusedColumn == e.Column)
     {
 if (e.Column == this.colAmount)
      {
     }
 }
 }

4,如果需在离开行的时候需要验证，则用grdView_BeforeLeaveRow事件.

DevExpress XtraGrid的功能实在强大，刚使用的时候看到一大片属性设置，分不清东南西北，参照demo和使用中的一些经验，记录一下使用方法。现在数据库访问都使用ORM技术了，对于DataSouce绑定以下是以IList为说明对象。

控件基本定义   DevExpress.XtraGrid.GridControl gridControl1;

1、 数据绑定（IList）

DevExpress.XtraGrid.Views.Grid.GridView gridView1;
 IList<MyClass> list = new BindingList<MyClass>();
 //初始list
 list.Add(A);
 list.Add(B);
 ………..
 gridControl1.DataSource = list;

2、 在Grid上编辑数据

修改属性gridView1.OptionsView.NewItemRowPosition，设为Top或Bottom可以在Grid上添加数据。

（在demo中原文：a record object must be inherited from the IEditableObject class if you need the ability to cancel newly added records via the grid）

译：如果你需要通过gird取消新建的记录，你的记录对象必须实现IEditableObject

（注：在测试中，感觉不需要继承IEditableObject，在grid编辑后也能实现取消。demo通过实现IEditableObject的BeginEdit、CancelEdit方法，数据编辑后恢复特定数据。不使用grid直接修改数据，可以考虑这种恢复原数据的方法。）

3、 修改列（Column）格式

DevExpress.XtraGrid.Columns.GridColumn col = gridView1.Columns[0];

数据对齐方式 col.AppearanceCell.TextOptions.HAlignment， 默认值Default，可选值Default/Near/Center/Far。

说明：以下情况是基于从左到右的文字排列；若是从右到左，用法相反。

Default：数据默认的对齐方式

Near：左对齐

Center：居中对齐

Far：右对齐

列标题 col.Caption

对应绑定数据的属性 col.FieldName

排列顺序 col.VisibleIndex

格式化显示数据

Col.DisplayFormat.FormatType

Col.DisplayFormat.Format

Col.DisplayFormat.FormatString

区别：FormatType/FormatString 使用当前系统的语言区域设置，Format使用特定的

4、 使用Grid内置导航栏

gridControl1.UseEmbeddedNativgator=True

设定内置导航栏按钮其他属性 gridControl1.EmbeddedNavigator

5、 GridView内置方式编辑数据

禁止编辑数据 gridView1.OptionsBehavior.Editable = False，默认是True 可编辑。

Gridview内置数据编辑器显示方式 gridView1.OptionsBehavior.EditorShowMode，可选值Default/ MouseDown/MouseUp/ Click。

说明：

Default 多选Cell相当于Click，单选Cell相当于MouseDown

MouseDown 在单元格内按下鼠标键时打开内置编辑器

MouseUp 在单元格内释放鼠标键时打开内置编辑器

Click 在不是编辑状态，但获得焦点的单元格中点击时打开编辑器。点击非焦点单元格时，首先会切换焦点，再点击时才打开编辑器

6、 设定GrideView单元格的内置编辑器

在Run Designer的Columns选中需要变更编辑方式的Column，在ColumnEdit 属性的下拉菜单中选择编辑数据使用的控件。

例1：Person表的CountryID字段的值来自Country表，使用下拉列表显示CountryName编辑

修改CountryIDColumn.ColumnEdit值，选new->LookupEdit，默认命名为repositoryItemLookUpEdit1。展开ColumnEdit属性，将DisplayMember 设为CountryName，DropDownRows是下拉列表的行数，ValueMember设为CountryID。

代码中添加：

//init data

repositoryItemLookUpEdit1.DataSource = ds.Tables[Country];

例2：字段Age是整型，需要使用SpinEdit编辑

修改AgeColumn.ColumnEdit值，选new->SpinEdit。展开ColumnEdit属性，修改MaxValue、MinValue设定最大、最小值。运行时Age的取值只能在MaxValue至MinValue之间选值。

7、 GridView调节行高显示大文本

默认情况下gridview已单行方式显示，过长的文本只能显示开头部分，鼠标停留在单元格上方有ToolTip显示所有文本。在文本单元格的右边两个按钮供切换显示上下行。若需要在单元格变更行高显示所有文本。使用

gridView1.OptionsView.RowAutoHeight = True;

gridView1.LayoutChanged();

private void gridView1_CalcRowHeight(object sender,DevExpress.XtraGrid.Views.Grid.RowHeightEventArgs e) 
 {
 if(e.RowHandle >= 0)
 e.RowHeight = (int)gridView1.GetDataRow(e.RowHandle)["RowHeight"];
 }

8、 数据导出

XtraGrid支持Html、Xml、Txt、Xsl导出，对应的导出器是ExportHtmlProvider、ExportXmlProvider、ExportTxtProvider、ExportXslProvider

例：使用html格式导出数据

IExportProvider provider = new ExprotHtmlProvider(filename);
 ExportTo(provider);
 ……
 private void ExportTo(IExportProvider provider) {
             Cursor currentCursor = Cursor.Current;
             Cursor.Current = Cursors.WaitCursor;
 
  
             this.FindForm().Refresh();
             BaseExportLink link = gridView1.CreateExportLink(provider);
             (link as GridViewExportLink).ExpandAll = false;
             link.Progress += new DevExpress.XtraGrid.Export.ProgressEventHandler(Export_Progress);//进度条事件
             link.ExportTo(true);
             provider.Dispose();
             link.Progress -= new DevExpress.XtraGrid.Export.ProgressEventHandler(Export_Progress);  
             Cursor.Current = currentCursor;

 }

9、 焦点单元格显示方式

GrideView默认的焦点单元格显示方式是整行选中，焦点单元格高亮。可以调整以下属性进行修改

gridView1.FocusRectStyle ：焦点绘画方式 默认DrawFocusRectStyle.CellFocus（单元格）/ DrawFocusRectStyle.RowFocus（行）/ DrawFocusRectStyle.None（不绘画）

bool gridView1.OptionsSelection.EnableAppearanceFocusedCell ：是否焦点显示选中的单元格

bool gridView1.OptionsSelection.EnableAppearanceFocusedRow ：是否焦点显示选中的行

bool gridView1.OptionsSelection.InvertSelection ：是否反显示

bool gridView1.OptionsSelection.MultiSelect：是否使用多选

10、
显示非数据源的数据

可以在GrideView上增加数据源没有的列，如合计、日期、序号或其他数据源等。

方法一：实现CustomColumnDisplayText事件（只能用于显示）

以下例子在bandedGridColumn1上显示 FirstName+LastName

 

bandedGridColumn1.OptionsColumn.AllowEdit = false;
 private void bandedGridView1_CustomColumnDisplayText(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDisplayTextEventArgs e)
 {
      if(e.Column.Equals(bandedGridColumn1)) 
 {
          DataRow row = bandedGridView1.GetDataRow(e.RowHandle);
          e.DisplayText = string.Format("{0} {1}", row["FirstName"], row["LastName"]);
      } 
 }

方法二： 设定列的UnboundType，并实现CustomUnboundColumnData事件（可修改值）

以下例子演示DateTime/Int/String 绑定到数据列上显示。当修改 GrideView上的值时，将修改同步到原数组中

bandedGridColumn4.UnboundType = DevExpress.Data.UnboundColumnType.DateTime;
 bandedGridColumn5.UnboundType = DevExpress.Data.UnboundColumnType.Integer;
 bandedGridColumn6.UnboundType = DevExpress.Data.UnboundColumnType.String;
 
  
 private void bandedGridView1_CustomUnboundColumnData(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDataEventArgs e) {
               if(array == null) return;
               if(e.ListSourceRowIndex >= array.Count) return;
               Record rec = array[e.ListSourceRowIndex] as Record;
               if(rec == null) return;
               switch(e.Column.UnboundType) {
                    case UnboundColumnType.DateTime:
                        if(e.IsGetData)
                             e.Value = rec.Date;
                        else rec.Date = (DateTime)e.Value;
                        break;
                    case UnboundColumnType.Integer:
                        if(e.IsGetData)
                             e.Value = rec.Count;
                        else rec.Count = (Int32)e.Value;
                        break;
                    case UnboundColumnType.String:
                        if(e.IsGetData)
                             e.Value = rec.Comment;
                        else rec.Comment = e.Value.ToString();
                        break;
               }
          }

提交当前行的修改

using DevExpress.XtraGrid;
 using DevExpress.XtraGrid.Views.Base;
 using System.Data.Common;
 //...
 public void UpdateDatasource(GridControl grid) {
     //Save the latest changes to the bound DataTable
     ColumnView view = (ColumnView)grid.FocusedView;
     view.CloseEditor();
     if(!view.UpdateCurrentRow()) return;
     
     //Update the database's Suppliers table to which oleDBDataAdapter1 is connected
     DoUpdate(oleDbDataAdapter1, dataSet11.Tables["Suppliers"]);
     //Update the database's Products table to which the oleDbDataAdapter2 is connected
     DoUpdate(oleDbDataAdapter2, dataSet11.Tables["Products"]);
 }
  
 public void DoUpdate(DbDataAdapter dataAdapter, System.Data.DataTable dataTable) {
     try {
         dataAdapter.Update(dataTable);
     } catch(Exception ex) {
         MessageBox.Show(ex.Message);
     }
 }

接着说，GirdControl如何定位和查找指定列显示值的行(注意是列的实显示值，而不是关联数据源列值)

下面请看代码：

using DevExpress.XtraGrid.Views.Base;
 using DevExpress.XtraGrid.Columns;
 // ...
  
 string searchText = "Japan";
 // obtaining the focused view
 ColumnView view = (ColumnView)gridControl1.FocusedView;
 // obtaining the column bound to the Country field
 GridColumn column = view.Columns["Country"];
 if(column != null) {
 // locating the row
 //如果用数据源中的列值，请用ColumnView.LocateByValue
     int rhFound = view.LocateByDisplayText(view.FocusedRowHandle + 1, column, searchText);
     // focusing the cell
     if(rhFound != GridControl.InvalidRowHandle) {
         view.FocusedRowHandle = rhFound;
         view.FocusedColumn = column;
     }
 }

另一个查找示例

DevExpress.XtraGrid.Views.Base.ColumnView view = gridControl1.MainView as DevExpress.XtraGrid.Views.Base.ColumnView;
 view.BeginUpdate();
 try {
    int rowHandle = 0;
    DevExpress.XtraGrid.Columns.GridColumn col = view.Columns["Category"];
    while(true) {
       // locating the next row
       rowHandle = view.LocateByValue(rowHandle, col, "SPORTS");
       // exiting the loop if no row is found
       if (rowHandle == DevExpress.XtraGrid.GridControl.InvalidRowHandle)
          break;
       // perform specific operations on the row found here
       // ...
       rowHandle++;
    }
 } 
 finally {
    view.EndUpdate();
 }

将特定编辑框绑定到列
默认的cell编辑框是不可以改变的，即使是在运行时，因为它们是动态创建和注销的。
要想定制，就在设计时修改ColumnEdit吧。

using DevExpress.XtraEditors.Repository;
  
 //Create a repository item for a combo box editor 
 RepositoryItemComboBox riCombo = new RepositoryItemComboBox();
 riCombo.Items.AddRange(new string[] {"London", "Berlin", "Paris"});
 //Add the item to the internal repository
 gridControl1.RepositoryItems.Add(riCombo);
 //Now you can define the repository item as an in-place column editor
 colCity.ColumnEdit =  riCombo;

另一个运行时绑定列编辑框示例

private void gridView1_CustomRowCellEdit(object sender, DevExpress.XtraGrid.Views.Grid.CustomRowCellEditEventArgs e) {
    if (e.Column.FieldName == "FieldName") return;
    DevExpress.XtraGrid.Views.Grid.GridView gv = sender as DevExpress.XtraGrid.Views.Grid.GridView;
    string fieldName = gv.GetRowCellValue(e.RowHandle, gv.Columns["FieldName"]).ToString();
    switch (fieldName) {
       case "Population":
          e.RepositoryItem = repositoryItemSpinEdit1;
          break;
       case "Country":
          e.RepositoryItem = repositoryItemComboBox1;
          break;
       case "Capital":
          e.RepositoryItem = repositoryItemCheckEdit1;
          break;
    }           
 }

检验录入数据是否有效

using DevExpress.XtraGrid.Views.Grid;
 using DevExpress.XtraGrid.Columns;
  
 public bool isValidDate(int day, int month, int year) {
     return (day > 0) && (month > 0) && (month <= 12) && (year > 1980) && (year < 2100) && (day <= DateTime.DaysInMonth(year, month));
 }
  
 private void gridView1_ValidateRow(object sender, DevExpress.XtraGrid.Views.Base.ValidateRowEventArgs e) {
     GridView view = sender as GridView;
     GridColumn colDay = view.Columns["Day"];
     GridColumn colMonth = view.Columns["Month"];
     GridColumn colYear = view.Columns["Year"];
     int day = (int)view.GetRowCellValue(e.RowHandle, colDay);
     int month = (int)view.GetRowCellValue(e.RowHandle, colMonth);
     int year = (int)view.GetRowCellValue(e.RowHandle, colYear);
     e.Valid = isValidDate(day, month, year);
     if(!e.Valid) {
         view.SetColumnError(colDay, "Check the day");
         view.SetColumnError(colMonth, "Check the month");
         view.SetColumnError(colYear, "Check the year");
     }
 }

MouseMove捕捉

private void Grid_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e) 
   { 
   ShowHitInfo(this.gridView1.CalcHitInfo(new Point(e.X, e.Y))); 
   } 
   private void ShowHitInfo(DevExpress.XtraGrid.Views.Grid.ViewInfo.GridHitInfo hi) 
   { 
    DevExpress.XtraGrid.Views.Base.ColumnView cgv = 
     (DevExpress.XtraGrid.Views.Base.ColumnView)Grid.MainView; 
    string columnName = hi.Column == null ? "No column" : hi.Column.Caption; 
    switch(columnName) 
    { 
     case "账号": 
      txtUserName.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column); 
      break; 
     case "密码": 
      txtPassword.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column); 
      break; 
     case "真实姓名": 
      txtRealName.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column); 
      break; 
     case "电子邮件": 
      txtEmail.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column); 
      break; 
     case "角色": 
      cbRole.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column); 
      break; 
     default: 
      txtUserName.Text = "Null"; 
      txtPassword.Text = "Null"; 
      txtRealName.Text = "Null"; 
      txtEmail.Text = "Null"; 
      cbRole.Text = "Null"; 
      break; 
    }

主从表的设置

DataTable dt = pb.GetItemInfoList(Port).Copy(); //返回一个TABLE
             dt.TableName = "ItemInfo";
             ds.Tables.Add(dt);
             DataTable dt2 = pb.GetBuildingInfoList(Port).Copy(); //返回一个TABLE
             dt2.TableName = "BuildingInfo";
             ds.Tables.Add(dt2);
             DataColumn keyColumn = ds.Tables["ItemInfo"].Columns["ITEMINFO_ID"];
             DataColumn foreignKeyColumn = ds.Tables["BuildingInfo"].Columns["ITEMINFOID"];
             ds.Relations.Add("itembuildinginfo", keyColumn, foreignKeyColumn);
             gridControl1.DataSource = ds.Tables["ItemInfo"];

获取从表的当前选择行的某一列（如ID列）
     这个时候再使用获取主表当前选择行的某一列的方法是不行的，因为所得到的seletedrowscount=0。使用如下方法得到：
  在MASTER表的展开事件中得到detail有的view.然后就可以利用它了。例：

//主表的masterrowexpanded事件 
 private void gridView1_MasterRowExpanded(object sender, DevExpress.XtraGrid.Views.Grid.CustomMasterRowEventArgs e)
         {
             detailView = gridView1.GetDetailView(e.RowHandle, e.RelationIndex) as DevExpress.XtraGrid.Views.Grid.GridView;
         }
  
 //取得从表的当前行
 int[] i = detailView.GetSelectedRows();
             DataRowView dt = (DataRowView)detailView.GetRow(i[0]);
  
 //获得当前行某列的值可以使用
 
 dt["列名"].ToString();
 
 //获得当那个列的值。

定义焦点行的方法：

gridView_bcode.FocusedRowHandle = focuseRowInt; //通过设置GridView 的FocusedRowHandle属性 
  
 //获取焦点行任意单元格的数据    
 ColumnView cv = (ColumnView)gridControl_Gongzi.FocusedView;//重新获取此ID 否则无法从表头连删获取不到id   
                         int focusedhandle = cv.FocusedRowHandle;   
                         object rowIdObj = gridView1.GetRowCellValue(focusedhandle, "id");   
                         if (DBNull.Value != rowIdObj)   
                         {   
                             FocusedRow_id = Convert.ToInt32(rowIdObj);   
                         }  
 //获取焦点行任意单元格的数据 
 ColumnView cv = (ColumnView)gridControl_Gongzi.FocusedView;//重新获取此ID 否则无法从表头连删获取不到id
                         int focusedhandle = cv.FocusedRowHandle;
                         object rowIdObj = gridView1.GetRowCellValue(focusedhandle, "id");
                         if (DBNull.Value != rowIdObj)
                         {
                             FocusedRow_id = Convert.ToInt32(rowIdObj);
                         }
  view plaincopy to clipboardprint?
 //当数据发生变化时执行    
      private void gridView1_CellValueChanged(object sender, CellValueChangedEventArgs e)   
      {   
          int intRowHandle = e.RowHandle;   
          FocusedRow_bumen = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "bumen"));   
          FocusedRow_xingming = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "xingming"));   
          //FocusedRow_jibengongzi = Convert.ToDecimal(gridView1.GetRowCellValue(intRowHandle, "jibengongzi"));   
          object rowJibengongziObj = gridView1.GetRowCellValue(intRowHandle, "jibengongzi");   
          if (DBNull.Value != rowJibengongziObj)   
          {   
              FocusedRow_jibengongzi = Convert.ToDecimal(rowJibengongziObj);   
          }   
       }  
    //当数据发生变化时执行 
         private void gridView1_CellValueChanged(object sender, CellValueChangedEventArgs e)
         {
             int intRowHandle = e.RowHandle;
             FocusedRow_bumen = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "bumen"));
             FocusedRow_xingming = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "xingming"));
             //FocusedRow_jibengongzi = Convert.ToDecimal(gridView1.GetRowCellValue(intRowHandle, "jibengongzi"));
             object rowJibengongziObj = gridView1.GetRowCellValue(intRowHandle, "jibengongzi");
             if (DBNull.Value != rowJibengongziObj)
             {
                 FocusedRow_jibengongzi = Convert.ToDecimal(rowJibengongziObj);
             }
          } view plaincopy to clipboardprint?
 //设置焦点行的焦点单元格的位置   
 ColumnView view = (ColumnView)gridControl_Gongzi.FocusedView;   
 view.FocusedColumn = view.Columns["bumen"];  
 //设置焦点行的焦点单元格的位置
 ColumnView view = (ColumnView)gridControl_Gongzi.FocusedView;
 view.FocusedColumn = view.Columns["bumen"]; view plaincopy to clipboardprint?
 //当焦点行发生改变时执行 获取选中焦点行id   
        private void gridView1_FocusedRowChanged(object sender, DevExpress.XtraGrid.Views.Base.FocusedRowChangedEventArgs e)   
        {   
            int intRowHandle = e.FocusedRowHandle;   
   
            object rowIdObj = gridView1.GetRowCellValue(intRowHandle, "id");   
   
            if (DBNull.Value != rowIdObj)//做个判断否则获取不到id后报错   
            {   
                FocusedRow_id = Convert.ToInt32(rowIdObj);   
            }   
        }  
  //当焦点行发生改变时执行 获取选中焦点行id
         private void gridView1_FocusedRowChanged(object sender, DevExpress.XtraGrid.Views.Base.FocusedRowChangedEventArgs e)
         {
             int intRowHandle = e.FocusedRowHandle;
  
             object rowIdObj = gridView1.GetRowCellValue(intRowHandle, "id");
  
             if (DBNull.Value != rowIdObj)//做个判断否则获取不到id后报错
             {
                 FocusedRow_id = Convert.ToInt32(rowIdObj);
             }
         }   
  
  view plaincopy to clipboardprint?
 //焦点行的FocusedHandle为：   
  FocuseRow_Handle = -999998;   
 //获取焦点行的handle   
 ColumnView newview = (ColumnView)gridControl_Gongzi.FocusedView;   
   
                         FocuseRow_Handle = newview.FocusedRowHandle;   
 //回车添加新行   
   代码 
   private void gridView1_KeyPress(object sender, KeyPressEventArgs e)   
            
         {   
             if (e.KeyChar == 13)   
             {   
                 ColumnView view = (ColumnView)gridControl_Gongzi.FocusedView;   
                 if(view.IsLastRow)   
                 {   
                     if (FocuseRow_Handle == 0)   
                     {   
                         gridView1.AddNewRow();   
                            
                         ColumnView newview = (ColumnView)gridControl_Gongzi.FocusedView;   
                            
                         newview.FocusedColumn = newview.Columns["bumen"];//定位焦点网格的位置   
                            
                         FocuseRow_Handle = newview.FocusedRowHandle;//获取新焦点行的FocuseRowHandle 并初始化全局变量FocuseRow_Handle供保存操作时判断是upd                                                                       ate还是insert    
                     }