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

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;

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;

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

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         voidview_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         voidview_KeyDown(object sender, KeyEventArgs e) {

186             if (View.FocusedColumn != column || e.KeyCode != Keys.Space) return;

187             InvertRowSelection(View.FocusedRowHandle);

188         }

189         voidView_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         voidView_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         voidView_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         voidview_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

使用方法

1 public Form1()

2  {

3       InitializeComponent();

4       new GridCheckMarksSelection(gridView1);

5   }

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