DevExpress Grid使用checkBox选中的方法

到官网得到消息自13.2版本后的Dev Grid中均内置了CheckBox列多选功能。在寻找答案的过程的成果进行记录。

一、13.2版本以后用法

1. 启用多选列
   对Gird中的View进行以下属性设置：
   

    gridView1.OptionsSelection.MultiSelect = true;
    gridView1.OptionsSelection.MultiSelectMode = GridMultiSelectMode.CheckBoxRowSelect;

2. 清除当前选择
   在选中列时后，可配置在选中列以外的地方点击时候会清除当前的选择。14以后才有此功能
   gridView1.OptionsSelection.ResetSelectionClickOutsideCheckboxSelector = true;
3. 获取选中的行

二、早起版本实现

     相关链接：http://www.devexpress.com/Support/Center/Example/Details/E1271

1. GridCheckMarksSelection类
   
   

     1 public class GridCheckMarksSelection {
     2         protected GridView _view;
     3         protected ArrayList selection;
     4         GridColumn column;
     5         RepositoryItemCheckEdit edit;
     6         const int CheckboxIndent = 4;
     7 
     8         public GridCheckMarksSelection()           {
     9             selection = new ArrayList();
    10         }
    11 
    12         public GridCheckMarksSelection(GridView view) : this() {
    13             View = view;
    14         }
    15         public GridView View {
    16             get { return _view; }
    17             set {
    18                 if (_view != value) {
    19                     Detach();
    20                     Attach(value);
    21                 }
    22             }
    23         }
    24         public GridColumn CheckMarkColumn { get { return column; } }
    25 
    26         public int SelectedCount { get { return selection.Count; } }
    27         public object GetSelectedRow(int index) {
    28             return selection[index];
    29         }
    30         public int GetSelectedIndex(object row) {
    31             return selection.IndexOf(row);
    32         }
    33         public void ClearSelection() {
    34             selection.Clear();
    35             Invalidate();
    36         }
    37         public void SelectAll() {
    38             selection.Clear();
    39             // fast (won't work if the grid is filtered)
    40             //if(_view.DataSource is ICollection)
    41             //    selection.AddRange(((ICollection)_view.DataSource));
    42             //else
    43             // slow:
    44             for (int i = 0; i < _view.DataRowCount; i++)
    45                 selection.Add(_view.GetRow(i));
    46             Invalidate();
    47         }
    48         public void SelectGroup(int rowHandle, bool select) {
    49             if (IsGroupRowSelected(rowHandle) && select) return;
    50             for (int i = 0; i < _view.GetChildRowCount(rowHandle); i++) {
    51                 int childRowHandle = _view.GetChildRowHandle(rowHandle, i);
    52                 if (_view.IsGroupRow(childRowHandle))
    53                     SelectGroup(childRowHandle, select);
    54                 else
    55                     SelectRow(childRowHandle, select, false);
    56             }
    57             Invalidate();
    58         }
    59         public void SelectRow(int rowHandle, bool select) {
    60             SelectRow(rowHandle, select, true);
    61         }
    62         public void InvertRowSelection(int rowHandle) {
    63             if (View.IsDataRow(rowHandle)) {
    64                 SelectRow(rowHandle, !IsRowSelected(rowHandle));
    65             }
    66             if (View.IsGroupRow(rowHandle)) {
    67                 SelectGroup(rowHandle, !IsGroupRowSelected(rowHandle));
    68             }
    69         }
    70         public bool IsGroupRowSelected(int rowHandle) {
    71             for (int i = 0; i < _view.GetChildRowCount(rowHandle); i++) {
    72                 int row = _view.GetChildRowHandle(rowHandle, i);
    73                 if (_view.IsGroupRow(row)) {
    74                     if (!IsGroupRowSelected(row)) return false;
    75                 } else
    76                     if (!IsRowSelected(row)) return false;
    77             }
    78             return true;
    79         }
    80         public bool IsRowSelected(int rowHandle) {
    81             if (_view.IsGroupRow(rowHandle))
    82                 return IsGroupRowSelected(rowHandle);
    83 
    84             object row = _view.GetRow(rowHandle);
    85             return GetSelectedIndex(row) != -1;
    86         }
    87 
    88         protected virtual void Attach(GridView view) {
    89             if (view == null) return;
    90             selection.Clear();
    91             this._view = view;
    92             view.BeginUpdate();
    93             try {
    94                 edit = view.GridControl.RepositoryItems.Add("CheckEdit") as RepositoryItemCheckEdit;
    95 
    96                 column = view.Columns.Add();
    97                 column.OptionsColumn.AllowSort = DevExpress.Utils.DefaultBoolean.False;
    98                 column.Visible = true;
    99                 column.VisibleIndex = 0;
   100                 column.FieldName = "CheckMarkSelection";
   101                 column.Caption = "Mark";
   102                 column.OptionsColumn.ShowCaption = false;
   103                 column.OptionsColumn.AllowEdit = false;
   104                 column.OptionsColumn.AllowSize = false;
   105                 column.UnboundType = DevExpress.Data.UnboundColumnType.Boolean;
   106                 column.Width = GetCheckBoxWidth();
   107                 column.ColumnEdit = edit;
   108 
   109                 view.Click += new EventHandler(View_Click);
   110                 view.CustomDrawColumnHeader += new ColumnHeaderCustomDrawEventHandler(View_CustomDrawColumnHeader);
   111                 view.CustomDrawGroupRow += new RowObjectCustomDrawEventHandler(View_CustomDrawGroupRow);
   112                 view.CustomUnboundColumnData += new CustomColumnDataEventHandler(view_CustomUnboundColumnData);
   113                 view.KeyDown += new KeyEventHandler(view_KeyDown);
   114                 view.RowStyle += new RowStyleEventHandler(view_RowStyle);
   115             } finally {
   116                 view.EndUpdate();
   117             }
   118         }
   119         protected virtual void Detach() {
   120             if (_view == null) return;
   121             if (column != null)
   122                 column.Dispose();
   123             if (edit != null) {
   124                 _view.GridControl.RepositoryItems.Remove(edit);
   125                 edit.Dispose();
   126             }
   127 
   128             _view.Click -= new EventHandler(View_Click);
   129             _view.CustomDrawColumnHeader -= new ColumnHeaderCustomDrawEventHandler(View_CustomDrawColumnHeader);
   130             _view.CustomDrawGroupRow -= new RowObjectCustomDrawEventHandler(View_CustomDrawGroupRow);
   131             _view.CustomUnboundColumnData -= new CustomColumnDataEventHandler(view_CustomUnboundColumnData);
   132             _view.KeyDown -= new KeyEventHandler(view_KeyDown);
   133             _view.RowStyle -= new RowStyleEventHandler(view_RowStyle);
   134 
   135             _view = null;
   136         }
   137         protected int GetCheckBoxWidth() {
   138             DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo info = edit.CreateViewInfo() as DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo;
   139             int width = 0;
   140             GraphicsInfo.Default.AddGraphics(null);
   141             try {
   142                 width = info.CalcBestFit(GraphicsInfo.Default.Graphics).Width;
   143             } finally {
   144                 GraphicsInfo.Default.ReleaseGraphics();
   145             }
   146             return width + CheckboxIndent * 2;
   147         }
   148         protected void DrawCheckBox(Graphics g, Rectangle r, bool Checked) {
   149             DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo info;
   150             DevExpress.XtraEditors.Drawing.CheckEditPainter painter;
   151             DevExpress.XtraEditors.Drawing.ControlGraphicsInfoArgs args;
   152             info = edit.CreateViewInfo() as DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo;
   153             painter = edit.CreatePainter() as DevExpress.XtraEditors.Drawing.CheckEditPainter;
   154             info.EditValue = Checked;
   155             info.Bounds = r;
   156             info.CalcViewInfo(g);
   157             args = new DevExpress.XtraEditors.Drawing.ControlGraphicsInfoArgs(info, new DevExpress.Utils.Drawing.GraphicsCache(g), r);
   158             painter.Draw(args);
   159             args.Cache.Dispose();
   160         }
   161         void Invalidate() {
   162             _view.CloseEditor();
   163             _view.BeginUpdate();
   164             _view.EndUpdate();
   165         }
   166         void SelectRow(int rowHandle, bool select, bool invalidate) {
   167             if (IsRowSelected(rowHandle) == select) return;
   168             object row = _view.GetRow(rowHandle);
   169             if (select)
   170                 selection.Add(row);
   171             else
   172                 selection.Remove(row);
   173             if (invalidate) {
   174                Invalidate();
   175             }
   176         }
   177         void view_CustomUnboundColumnData(object sender, CustomColumnDataEventArgs e) {
   178             if (e.Column == CheckMarkColumn) {
   179                 if (e.IsGetData)
   180                     e.Value = IsRowSelected(View.GetRowHandle(e.ListSourceRowIndex));
   181                 else
   182                     SelectRow(View.GetRowHandle(e.ListSourceRowIndex), (bool)e.Value);
   183             }
   184         }
   185         void view_KeyDown(object sender, KeyEventArgs e) {
   186             if (View.FocusedColumn != column || e.KeyCode != Keys.Space) return;
   187             InvertRowSelection(View.FocusedRowHandle);
   188         }
   189         void View_Click(object sender, EventArgs e) {
   190             GridHitInfo info;
   191             Point pt = _view.GridControl.PointToClient(Control.MousePosition);
   192             info = _view.CalcHitInfo(pt);
   193             if (info.Column == column) {
   194                 if (info.InColumn) {
   195                     if (SelectedCount == _view.DataRowCount)
   196                         ClearSelection();
   197                     else
   198                         SelectAll();
   199                 }
   200                 if (info.InRowCell) {
   201                     InvertRowSelection(info.RowHandle);
   202                 }
   203             }
   204             if (info.InRow && _view.IsGroupRow(info.RowHandle) && info.HitTest != GridHitTest.RowGroupButton) {
   205                 InvertRowSelection(info.RowHandle);
   206             }
   207         }
   208         void View_CustomDrawColumnHeader(object sender, ColumnHeaderCustomDrawEventArgs e) {
   209             if (e.Column == column) {
   210                 e.Info.InnerElements.Clear();
   211                 e.Painter.DrawObject(e.Info);
   212                 DrawCheckBox(e.Graphics, e.Bounds, SelectedCount == _view.DataRowCount);
   213                 e.Handled = true;
   214             }
   215         }
   216         void View_CustomDrawGroupRow(object sender, RowObjectCustomDrawEventArgs e) {
   217             DevExpress.XtraGrid.Views.Grid.ViewInfo.GridGroupRowInfo info;
   218             info = e.Info as DevExpress.XtraGrid.Views.Grid.ViewInfo.GridGroupRowInfo;
   219 
   220             info.GroupText = "         " + info.GroupText.TrimStart();
   221             e.Info.Paint.FillRectangle(e.Graphics, e.Appearance.GetBackBrush(e.Cache), e.Bounds);
   222             e.Painter.DrawObject(e.Info);
   223 
   224             Rectangle r = info.ButtonBounds;
   225             r.Offset(r.Width + CheckboxIndent * 2 - 1, 0);
   226             DrawCheckBox(e.Graphics, r, IsGroupRowSelected(e.RowHandle));
   227             e.Handled = true;
   228         }
   229         void view_RowStyle(object sender, RowStyleEventArgs e) {
   230             if (IsRowSelected(e.RowHandle)) {
   231                 e.Appearance.BackColor = SystemColors.Highlight;
   232                 e.Appearance.ForeColor = SystemColors.HighlightText;
   233             }
   234         }
   235     }

   GridCheckMarksSelection类

    

2. 使用方法
   

   1 public Form1()
   2  {
   3       InitializeComponent();
   4       new GridCheckMarksSelection(gridView1);
   5   }