DevExpress GridControl keep the selection of detail grid after collapse
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问题：DevExpress gridview设置为master-detail模式，当选中detail gridview中的行后，收缩master gridview，然后再展开时，detail gridview行选中状态未保存。
解决：
18.1版本以上可以通过设置GridView的OptionSelection中CheckBoxSelectorField
属性。
18.1版本以下可以通过以下代码实现，实现group/master上下级联勾选、detail选中状态保存
multiple-selection-using-checkbox-in-a-master-detail-grid-e3507
效果图：
其中主要代码如下：
GridCheckMarksSelection类
using System;
using System.Drawing;
using System.Collections;
using System.Windows.Forms;
using DevExpress.XtraGrid.Columns;
using DevExpress.XtraEditors.Repository;
using DevExpress.XtraGrid.Views.Base;
using DevExpress.XtraGrid.Views.Grid;
using DevExpress.XtraGrid.Views.Grid.ViewInfo;
using DevExpress.Utils.Drawing;
using System.Data;
using E1271;
using System.Collections.Generic;
using DevExpress.XtraEditors.ViewInfo;
using DevExpress.XtraEditors.Drawing;
using System.Linq;
namespace DevExpress.XtraGrid.Selection
public class GridCheckMarksSelection
public const string CHECKMARK_FIELDNAME = "CheckMarkSelection";
GridView _view;
GridView _parentView;
ArrayList selection;
GridColumn column;
RepositoryItemCheckEdit edit;
Dictionary<DetailKey, GridCheckMarksSelection> detailSelections = new Dictionary<DetailKey, GridCheckMarksSelection>();
GridCheckMarksSelection parentSelection = null;
const int CheckboxIndent = 4;
public GridCheckMarksSelection()
selection = new ArrayList();
public GridCheckMarksSelection(GridView view, GridCheckMarksSelection parentCheckMarkSelection) : this()
View = view;
parentSelection = parentCheckMarkSelection;
_parentView = parentSelection.View;
public GridCheckMarksSelection(GridView view) : this()
View = view;
public GridView View
get return _view;
set
if (_view != value)
Detach(value);
Attach(value);
public GridColumn CheckMarkColumn get return column;
public int SelectedCount get return selection.Count;
public bool IsMasterView
get return _parentView == null;
#region Attach / Detach
void AddCheckColumn()
edit = View.GridControl.RepositoryItems["CheckMark"] as RepositoryItemCheckEdit;
if (edit == null)
edit = View.GridControl.RepositoryItems.Add("CheckEdit") as RepositoryItemCheckEdit;
edit.Name = "CheckMark";
column = View.Columns.Add();
column.OptionsColumn.AllowSort = DevExpress.Utils.DefaultBoolean.False;
column.Visible = true;
column.VisibleIndex = 0;
column.FieldName = CHECKMARK_FIELDNAME;
column.Caption = "Mark";
column.OptionsColumn.ShowCaption = false;
column.OptionsColumn.AllowEdit = false;
column.OptionsColumn.AllowSize = false;
column.UnboundType = DevExpress.Data.UnboundColumnType.Boolean;
column.Width = GetCheckBoxWidth();
column.ColumnEdit = edit;
void SubscribeViewToEvents()
View.Click += new EventHandler(View_Click);
View.CustomDrawColumnHeader += new ColumnHeaderCustomDrawEventHandler(View_CustomDrawColumnHeader);
View.CustomDrawGroupRow += new RowObjectCustomDrawEventHandler(View_CustomDrawGroupRow);
View.CustomUnboundColumnData += new CustomColumnDataEventHandler(view_CustomUnboundColumnData);
View.KeyDown += new KeyEventHandler(view_KeyDown);
View.RowStyle += new RowStyleEventHandler(view_RowStyle);
View.MasterRowExpanded += view_MasterRowExpanded;
void UnsubscribeViewFromEvents()
View.Click -= View_Click;
View.CustomDrawColumnHeader -= View_CustomDrawColumnHeader;
View.CustomDrawGroupRow -= View_CustomDrawGroupRow;
View.CustomUnboundColumnData -= view_CustomUnboundColumnData;
View.KeyDown -= view_KeyDown;
View.RowStyle -= view_RowStyle;
View.MasterRowExpanded -= view_MasterRowExpanded;
protected virtual void Attach(GridView view)
if (view == null) return;
_view = view;
AddCheckColumn();
SubscribeViewToEvents();
protected virtual void Detach(GridView newView)
newView.Columns.Remove(newView.Columns[CHECKMARK_FIELDNAME]);
if (_view == null) return;
UnsubscribeViewFromEvents();
_view = null;
#endregion
public object GetSelectedRow(int index)
return selection[index];
public int GetSelectedIndex(object row)
foreach (object record in selection)
if ((record as DataRowView).Row == (row as DataRowView).Row)
return selection.IndexOf(record);
return selection.IndexOf(row);
#region Selection Methods
public void SelectRow(int rowHandle, bool select)
if (View.IsGroupRow(rowHandle))
SelectGroup(rowHandle, select);
return;
SelectRow(rowHandle, select, true);
public void SelectRowObject(object row, bool select)
int rowHandle = View.GetRowHandle(((IList)View.DataSource).IndexOf(row));
SelectRow(rowHandle, select, true);
public void ClearSelection()
selection.Clear();
UpdateParentAndDetailSelection(false);
InvalidateView();
public void SelectAll()
selection.Clear();
selection.AddRange((IList)View.DataSource);
UpdateParentAndDetailSelection(true);
InvalidateView();
public void InvertDetailRowsSelection(int masterRowHandle)
GetDetailSelectionHelper(masterRowHandle, 0).SetAllDetailsSelected(masterRowHandle, IsRowSelected(masterRowHandle));
public void InvertRowSelection(int rowHandle)
if (View.IsDataRow(rowHandle))
SelectRow(rowHandle, !IsRowSelected(rowHandle));
if (View.IsGroupRow(rowHandle))
SelectGroup(rowHandle, !IsGroupRowSelected(rowHandle));
void SelectRow(int rowHandle, bool select, bool invalidate)
if (IsRowSelected(rowHandle) == select) return;
object row = View.GetRow(rowHandle);
if (select)
selection.Add(row);
else
selection.RemoveAt(GetSelectedIndex(row));
if (IsMasterView)
SetAllDetailsSelected(rowHandle, select);
else
SetParentRowSelected(AreAllDetailsSelected());
if (invalidate)
InvalidateView();
void SelectGroup(int rowHandle, bool select)
if (IsGroupRowSelected(rowHandle) && select) return;
for (int i = 0; i < View.GetChildRowCount(rowHandle); i++)
int childRowHandle = View.GetChildRowHandle(rowHandle, i);
if (View.IsGroupRow(childRowHandle))
SelectGroup(childRowHandle, select);
else
SelectRow(childRowHandle, select, false);
InvalidateView();
void SetParentRowSelected(bool selected)
if (selected)
parentSelection.selection.Add(View.SourceRow);
else
parentSelection.selection.Remove(View.SourceRow);
_parentView.LayoutChanged();
void UpdateParentAndDetailSelection(bool select)
if (IsMasterView)
for (int i = 0; i < View.DataRowCount; i++)
SetAllDetailsSelected(i, select);
else
SetParentRowSelected(AreAllDetailsSelected());
void SetAllDetailsSelected(int masterRowHandle, bool select)
int relationCount = View.GetRelationCount(masterRowHandle);
for (int i = 0; i < relationCount; i++)
SetAllDetailRowsSelected(masterRowHandle, i, select);
void SetAllDetailRowsSelected(int masterRowHandle, int relationIndex, bool select)
GridCheckMarksSelection detailSelectionHelper = GetDetailSelectionHelper(masterRowHandle, relationIndex);
detailSelectionHelper.selection.Clear();
if (select)
detailSelectionHelper.selection.AddRange(View.DataController.GetDetailList(masterRowHandle, relationIndex));
if (detailSelectionHelper.View != null) detailSelectionHelper.View.LayoutChanged();
#endregion
GridCheckMarksSelection GetDetailSelectionHelper(int masterRowHandle, int relationIndex)
DetailKey key = new DetailKey(masterRowHandle, relationIndex);
if (!detailSelections.ContainsKey(key))
detailSelections.Add(key, new GridCheckMarksSelection(null, this));
return detailSelections[key];
bool AreAllRowsSelected()
if (View != null)
return SelectedCount == View.DataRowCount;
else
DetailKey key = parentSelection.detailSelections.FirstOrDefault(x => x.Value == this).Key;
return SelectedCount == _parentView.DataController.GetDetailList(key.MasterRowHandle, key.RelationIndex).Count;
bool AreAllDetailsSelected() // call it for a detail helper
int relationCount = _parentView.GetRelationCount(View.SourceRowHandle);
for (int i = 0; i < relationCount; i++)
if (!parentSelection.GetDetailSelectionHelper(View.SourceRowHandle, i).AreAllRowsSelected())
return false;
return true;
bool IsGroupRowSelected(int rowHandle)
for (int i = 0; i < View.GetChildRowCount(rowHandle); i++)
int childRowHandle = View.GetChildRowHandle(rowHandle, i);
if (View.IsGroupRow(childRowHandle))
if (!IsGroupRowSelected(childRowHandle)) return false;
else
if (!IsRowSelected(childRowHandle)) return false;
return true;
public bool IsRowSelected(int rowHandle)
if (View.IsGroupRow(rowHandle))
return IsGroupRowSelected(rowHandle);
object row = View.GetRow(rowHandle);
return IsObjectSelected(row);
public bool IsObjectSelected(object row)
return GetSelectedIndex(row) != -1;
protected int GetCheckBoxWidth()
CheckEditViewInfo info = edit.CreateViewInfo() as CheckEditViewInfo;
int width = 0;
GraphicsInfo.Default.AddGraphics(null);
try
width = info.CalcBestFit(GraphicsInfo.Default.Graphics).Width;
finally
GraphicsInfo.Default.ReleaseGraphics();
return width + CheckboxIndent * 2;
void InvalidateView()
View.CloseEditor();
View.BeginUpdate();
View.EndUpdate();
#region Events
void view_MasterRowExpanded(object sender, CustomMasterRowEventArgs e)
GridView detailView = View.GetDetailView(e.RowHandle, e.RelationIndex) as GridView;
GridCheckMarksSelection detailHelper = GetDetailSelectionHelper(e.RowHandle, e.RelationIndex);
detailHelper.View = detailView;
detailHelper.View.LayoutChanged();
void view_CustomUnboundColumnData(object sender, CustomColumnDataEventArgs e)
if (e.Column == CheckMarkColumn)
if (e.IsGetData)
e.Value = IsObjectSelected(e.Row);
else
SelectRowObject(e.Row, (bool)e.Value);
void view_KeyDown(object sender, KeyEventArgs e)
if (e.KeyCode == Keys.Space && (View.FocusedColumn == CheckMarkColumn || View.IsGroupRow(View.FocusedRowHandle)))
InvertRowSelection(View.FocusedRowHandle);
void View_Click(object sender, EventArgs e)
Point pt = View.GridControl.PointToClient(Control.MousePosition);
GridHitInfo info = View.CalcHitInfo(pt);
if (info.InColumn)
if (AreAllRowsSelected())
ClearSelection();
else
SelectAll();
if (info.InRow && info.HitTest != GridHitTest.RowGroupButton && info.HitTest != GridHitTest.CellButton)
InvertRowSelection(info.RowHandle);
#endregion
#region Painting
protected void DrawCheckBox(Graphics g, Rectangle r, bool _checked)
CheckEditViewInfo info = edit.CreateViewInfo() as CheckEditViewInfo;
CheckEditPainter painter = edit.CreatePainter() as CheckEditPainter;
info.EditValue = _checked;
info.Bounds = r;
info.CalcViewInfo(g);
ControlGraphicsInfoArgs args = new ControlGraphicsInfoArgs(info, new GraphicsCache(g), r);
painter.Draw(args);
args.Cache.Dispose();
void View_CustomDrawColumnHeader(object sender, ColumnHeaderCustomDrawEventArgs e)
if (e.Column != null && e.Column == column)
e.Info.InnerElements.Clear();
e.Painter.DrawObject(e.Info);
DrawCheckBox(e.Cache.Graphics, e.Bounds, AreAllRowsSelected());
e.Handled = true;
void View_CustomDrawGroupRow(object sender, RowObjectCustomDrawEventArgs e)
GridGroupRowInfo info = e.Info as GridGroupRowInfo;
info.GroupText = " " + info.GroupText.TrimStart();
e.Info.Paint.FillRectangle(e.Cache.Graphics, e.Appearance.GetBackBrush(e.Cache), e.Bounds);
e.Painter.DrawObject(e.Info);
Rectangle r = info.ButtonBounds;
r.Offset(r.Width + CheckboxIndent * 2 - 1, 0);
DrawCheckBox(e.Cache.Graphics, r, IsGroupRowSelected(e.RowHandle));
e.Handled = true;
void view_RowStyle(object sender, RowStyleEventArgs e)
if (IsRowSelected(e.RowHandle))
e.Appearance.BackColor = SystemColors.Highlight;
e.Appearance.ForeColor = SystemColors.HighlightText;
#endregion
DetailKey类
using System;
using System.Collections.Generic;
using System.Linq;
namespace E1271
public class DetailKey
public DetailKey(int _masterRowHandle, int _relationIndex)
MasterRowHandle = _masterRowHandle;
RelationIndex = _relationIndex;
public int MasterRowHandle get;set;
public int RelationIndex get;set;
public override int GetHashCode()
return MasterRowHandle.GetHashCode() ^ RelationIndex.GetHashCode();
public override bool Equals(object obj)
if (obj is DetailKey)
return ((DetailKey)obj).MasterRowHandle == MasterRowHandle && ((DetailKey)obj).RelationIndex == RelationIndex;
return base.Equals(obj);
调用示例：
new GridCheckMarksSelection(gridView1);以上是关于DevExpress GridControl keep the selection of detail grid after collapse的主要内容，如果未能解决你的问题，请参考以下文章
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