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：

  1. using DevExpress.XtraGrid.Views.Base;
  2.  using DevExpress.XtraGrid.Columns;
  3.  // ...
  4.  
  5.  string searchText = "Japan";
  6.  // obtaining the focused view
  7.  ColumnView view = (ColumnView)gridControl1.FocusedView;
  8.  // obtaining the column bound to the Country field
  9.  GridColumn column = view.Columns["Country"];
  10.  if(column != null) {
  11.  // locating the row
  12.  //如果用数据源中的列值，请用ColumnView.LocateByValue
  13.      int rhFound = view.LocateByDisplayText(view.FocusedRowHandle + 1, column, searchText);
  14.      // focusing the cell
  15.      if(rhFound != GridControl.InvalidRowHandle) {
  16.          view.FocusedRowHandle = rhFound;
  17.          view.FocusedColumn = column;
  18.      }
  19.  }
  20.

另一个查找示例

  1.  DevExpress.XtraGrid.Views.Base.ColumnView view = gridControl1.MainView as DevExpress.XtraGrid.Views.Base.ColumnView;
  2.  view.BeginUpdate();
  3.  try {
  4.     int rowHandle = 0;
  5.     DevExpress.XtraGrid.Columns.GridColumn col = view.Columns["Category"];
  6.     while(true) {
  7.        // locating the next row
  8.        rowHandle = view.LocateByValue(rowHandle, col, "SPORTS");
  9.        // exiting the loop if no row is found
  10.        if (rowHandle == DevExpress.XtraGrid.GridControl.InvalidRowHandle)
  11.           break;
  12.        // perform specific operations on the row found here
  13.        // ...
  14.        rowHandle++;
  15.     }
  16.  }   finally {     view.EndUpdate();  }
  17.

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。

  1. using DevExpress.XtraEditors.Repository;
  2.  
  3.  //Create a repository item for a combo box editor
  4.  RepositoryItemComboBox riCombo = new RepositoryItemComboBox();
  5.  riCombo.Items.AddRange(new string[] {"London", "Berlin", "Paris"});
  6.  //Add the item to the internal repository
  7.  gridControl1.RepositoryItems.Add(riCombo);
  8.  //Now you can define the repository item as an in-place column editor
  9.  colCity.ColumnEdit =  riCombo;
  10.

另一个运行时绑定列编辑框示例

  1. private void gridView1_CustomRowCellEdit(object sender, DevExpress.XtraGrid.Views.Grid.CustomRowCellEditEventArgs e) {
  2.     if (e.Column.FieldName == "FieldName") return;
  3.     DevExpress.XtraGrid.Views.Grid.GridView gv = sender as DevExpress.XtraGrid.Views.Grid.GridView;
  4.     string fieldName = gv.GetRowCellValue(e.RowHandle, gv.Columns["FieldName"]).ToString();
  5.     switch (fieldName) {
  6.        case "Population":
  7.           e.RepositoryItem = repositoryItemSpinEdit1;
  8.           break;
  9.        case "Country":
  10.           e.RepositoryItem = repositoryItemComboBox1;
  11.           break;
  12.        case "Capital":
  13.           e.RepositoryItem = repositoryItemCheckEdit1;
  14.           break;
  15.     }
  16.  }
  17.

检验录入数据是否有效

  1. using DevExpress.XtraGrid.Views.Grid;
  2.  using DevExpress.XtraGrid.Columns;
  3.  
  4.  public bool isValidDate(int day, int month, int year) {
  5.      return (day > 0) && (month > 0) && (month <= 12) && (year > 1980) && (year < 2100) && (day <= DateTime.DaysInMonth(year, month));
  6.  }
  7.  
  8.  private void gridView1_ValidateRow(object sender, DevExpress.XtraGrid.Views.Base.ValidateRowEventArgs e) {
  9.      GridView view = sender as GridView;
  10.      GridColumn colDay = view.Columns["Day"];
  11.      GridColumn colMonth = view.Columns["Month"];
  12.      GridColumn colYear = view.Columns["Year"];
  13.      int day = (int)view.GetRowCellValue(e.RowHandle, colDay);
  14.      int month = (int)view.GetRowCellValue(e.RowHandle, colMonth);
  15.      int year = (int)view.GetRowCellValue(e.RowHandle, colYear);
  16.      e.Valid = isValidDate(day, month, year);
  17.      if(!e.Valid) {
  18.          view.SetColumnError(colDay, "Check the day");
  19.          view.SetColumnError(colMonth, "Check the month");
  20.          view.SetColumnError(colYear, "Check the year");
  21.      }
  22.  }
  23.

MouseMove捕捉

  1. private void Grid_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
  2.    {
  3.    ShowHitInfo(this.gridView1.CalcHitInfo(new Point(e.X, e.Y)));
  4.    }
  5.    private void ShowHitInfo(DevExpress.XtraGrid.Views.Grid.ViewInfo.GridHitInfo hi)
  6.    {
  7.     DevExpress.XtraGrid.Views.Base.ColumnView cgv =
  8.      (DevExpress.XtraGrid.Views.Base.ColumnView)Grid.MainView;
  9.     string columnName = hi.Column == null ? "No column" : hi.Column.Caption;
  10.     switch(columnName)
  11.     {
  12.      case "账号":
  13.       txtUserName.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column);
  14.       break;
  15.      case "密码":
  16.       txtPassword.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column);
  17.       break;
  18.      case "真实姓名":
  19.       txtRealName.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column);
  20.       break;
  21.      case "电子邮件":
  22.       txtEmail.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column);
  23.       break;
  24.      case "角色":
  25.       cbRole.Text = cgv.GetRowCellDisplayText(hi.RowHandle,hi.Column);
  26.       break;
  27.      default:
  28.       txtUserName.Text = "Null";
  29.       txtPassword.Text = "Null";
  30.       txtRealName.Text = "Null";
  31.       txtEmail.Text = "Null";
  32.       cbRole.Text = "Null";
  33.       break;
  34.     }
  35.

主从表的设置

  1. DataTable dt = pb.GetItemInfoList(Port).Copy(); //返回一个TABLE
  2.              dt.TableName = "ItemInfo";
  3.              ds.Tables.Add(dt);
  4.              DataTable dt2 = pb.GetBuildingInfoList(Port).Copy(); //返回一个TABLE
  5.              dt2.TableName = "BuildingInfo";
  6.              ds.Tables.Add(dt2);
  7.              DataColumn keyColumn = ds.Tables["ItemInfo"].Columns["ITEMINFO_ID"];
  8.              DataColumn foreignKeyColumn = ds.Tables["BuildingInfo"].Columns["ITEMINFOID"];
  9.              ds.Relations.Add("itembuildinginfo", keyColumn, foreignKeyColumn);
  10.              gridControl1.DataSource = ds.Tables["ItemInfo"];
  11.

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：

  1. //主表的masterrowexpanded事件
  2.  private void gridView1_MasterRowExpanded(object sender, DevExpress.XtraGrid.Views.Grid.CustomMasterRowEventArgs e)
  3.          {
  4.              detailView = gridView1.GetDetailView(e.RowHandle, e.RelationIndex) as DevExpress.XtraGrid.Views.Grid.GridView;
  5.          }
  6.  
  7.  //取得从表的当前行
  8.  int[] i = detailView.GetSelectedRows();
  9.              DataRowView dt = (DataRowView)detailView.GetRow(i[0]);
  10.  
  11.  //获得当前行某列的值可以使用
  12.  
  13.  dt["列名"].ToString();
  14.  
  15.  //获得当那个列的值。
  16.

定义焦点行的方法：

  1. gridView_bcode.FocusedRowHandle = focuseRowInt; //通过设置GridView 的FocusedRowHandle属性 
  2.  
  3.  //获取焦点行任意单元格的数据
  4.  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
  5.                          int focusedhandle = cv.FocusedRowHandle;
  6.                          object rowIdObj = gridView1.GetRowCellValue(focusedhandle, "id");
  7.                          if (DBNull.Value != rowIdObj)
  8.                          {
  9.                              FocusedRow_id = Convert.ToInt32(rowIdObj);
  10.                          }
  11.  //获取焦点行任意单元格的数据
  12.  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
  13.                          int focusedhandle = cv.FocusedRowHandle;
  14.                          object rowIdObj = gridView1.GetRowCellValue(focusedhandle, "id");
  15.                          if (DBNull.Value != rowIdObj)
  16.                          {
  17.                              FocusedRow_id = Convert.ToInt32(rowIdObj);
  18.                          }
  19.   view plaincopy to clipboardprint?
  20.  //当数据发生变化时执行
  21.       private void gridView1_CellValueChanged(object sender, CellValueChangedEventArgs e)
  22.       {
  23.           int intRowHandle = e.RowHandle;
  24.           FocusedRow_bumen = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "bumen"));
  25.           FocusedRow_xingming = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "xingming"));
  26.           //FocusedRow_jibengongzi = Convert.ToDecimal(gridView1.GetRowCellValue(intRowHandle, "jibengongzi"));
  27.           object rowJibengongziObj = gridView1.GetRowCellValue(intRowHandle, "jibengongzi");
  28.           if (DBNull.Value != rowJibengongziObj)
  29.           {
  30.               FocusedRow_jibengongzi = Convert.ToDecimal(rowJibengongziObj);
  31.           }
  32.        }
  33.     //当数据发生变化时执行
  34.          private void gridView1_CellValueChanged(object sender, CellValueChangedEventArgs e)
  35.          {
  36.              int intRowHandle = e.RowHandle;
  37.              FocusedRow_bumen = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "bumen"));
  38.              FocusedRow_xingming = Convert.ToString(gridView1.GetRowCellValue(intRowHandle, "xingming"));
  39.              //FocusedRow_jibengongzi = Convert.ToDecimal(gridView1.GetRowCellValue(intRowHandle, "jibengongzi"));
  40.              object rowJibengongziObj = gridView1.GetRowCellValue(intRowHandle, "jibengongzi");
  41.              if (DBNull.Value != rowJibengongziObj)
  42.              {
  43.                  FocusedRow_jibengongzi = Convert.ToDecimal(rowJibengongziObj);
  44.              }
  45.           } view plaincopy to clipboardprint?
  46.  //设置焦点行的焦点单元格的位置
  47.  ColumnView view = (ColumnView)gridControl_Gongzi.FocusedView;
  48.  view.FocusedColumn = view.Columns["bumen"];
  49.  //设置焦点行的焦点单元格的位置
  50.  ColumnView view = (ColumnView)gridControl_Gongzi.FocusedView;
  51.  view.FocusedColumn = view.Columns["bumen"]; view plaincopy to clipboardprint?
  52.  //当焦点行发生改变时执行 获取选中焦点行id
  53.         private void gridView1_FocusedRowChanged(object sender, DevExpress.XtraGrid.Views.Base.FocusedRowChangedEventArgs e)
  54.         {
  55.             int intRowHandle = e.FocusedRowHandle;   
  56.  
  57.             object rowIdObj = gridView1.GetRowCellValue(intRowHandle, "id");   
  58.  
  59.             if (DBNull.Value != rowIdObj)//做个判断否则获取不到id后报错
  60.             {
  61.                 FocusedRow_id = Convert.ToInt32(rowIdObj);
  62.             }
  63.         }
  64.   //当焦点行发生改变时执行 获取选中焦点行id
  65.          private void gridView1_FocusedRowChanged(object sender, DevExpress.XtraGrid.Views.Base.FocusedRowChangedEventArgs e)
  66.          {
  67.              int intRowHandle = e.FocusedRowHandle;
  68.  
  69.              object rowIdObj = gridView1.GetRowCellValue(intRowHandle, "id");
  70.  
  71.              if (DBNull.Value != rowIdObj)//做个判断否则获取不到id后报错
  72.              {
  73.                  FocusedRow_id = Convert.ToInt32(rowIdObj);
  74.              }
  75.          }   
  76.  
  77.   view plaincopy to clipboardprint?
  78.  //焦点行的FocusedHandle为：
  79.   FocuseRow_Handle = -999998;
  80.  //获取焦点行的handle
  81.  ColumnView newview = (ColumnView)gridControl_Gongzi.FocusedView;   
  82.  
  83.                          FocuseRow_Handle = newview.FocusedRowHandle;
  84.  //回车添加新行
  85.    代码
  86.    private void gridView1_KeyPress(object sender, KeyPressEventArgs e)   
  87.  
  88.          {
  89.              if (e.KeyChar == 13)
  90.              {
  91.                  ColumnView view = (ColumnView)gridControl_Gongzi.FocusedView;
  92.                  if(view.IsLastRow)
  93.                  {
  94.                      if (FocuseRow_Handle == 0)
  95.                      {
  96.                          gridView1.AddNewRow();   
  97.  
  98.                          ColumnView newview = (ColumnView)gridControl_Gongzi.FocusedView;   
  99.  
  100.                          newview.FocusedColumn = newview.Columns["bumen"];//定位焦点网格的位置   
  101.  
  102.                          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
  103.                      }
  104.

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