在開發一個個人項目的時候，有客戶反映預設GridView多選操作不是很友善和理想，想在清單的左邊增加一列可以勾選，并且最好支援清單頭部全選的操作，否則資料多的時候一個個勾選要到天荒地老。
基于以上需求，找了不少例子進行比較，并對代碼進行測試改進，終于完成了以上的功能了， 并且由于我本身做了多套界面的處理，是以，基于傳統的DataGridView全選操作不能少，而且基于DevExpress控件的GridView全選操作也應該支援，呵呵。
無圖無真相，下面先上圖介紹兩種不同的效果，然後在詳細介紹代碼的實作。
1）DevExpress控件的GridView的實作多選操作
先講DevExpress控件的GridView的實作，要實作的功能基本上是處理單擊全選操作、重新繪制表頭等操作，首先在加載第一步實作相關的事件和操作，如下所示。
this.gridView1.Click += new System.EventHandler(this.gridView1_Click);
this.gridView1.CustomDrawColumnHeader += new DevExpress.XtraGrid.Views.Grid.ColumnHeaderCustomDrawEventHandler(this.gridView1_CustomDrawColumnHeader);
this.gridView1.DataSourceChanged += new EventHandler(gridView1_DataSourceChanged);
然後就是實作裡面的事件操作了，對應的代碼如下所示。
private void gridView1_Click(object sender, EventArgs e)
{
if (DevControlHelper.ClickGridCheckBox(this.gridView1, "Check", m_checkStatus))
{
m_checkStatus = !m_checkStatus;
}
}
private void gridView1_CustomDrawColumnHeader(object sender, DevExpress.XtraGrid.Views.Grid.ColumnHeaderCustomDrawEventArgs e)
if (e.Column != null && e.Column.FieldName == "Check")
e.Info.InnerElements.Clear();
e.Painter.DrawObject(e.Info);
DevControlHelper.DrawCheckBox(e, m_checkStatus);
e.Handled = true;
void gridView1_DataSourceChanged(object sender, EventArgs e)
GridColumn column = this.gridView1.Columns.ColumnByFieldName("Check");
if (column != null)
column.Width = 80;
column.OptionsColumn.ShowCaption = false;
column.ColumnEdit = new RepositoryItemCheckEdit();
}
其中單擊和繪制表頭的操作，交給另外一個類DevControlHelper來獨立進行處理，資料源變化gridView1_DataSourceChanged實作的操作是尋找對應的全選列，并設定列寬、隐藏表頭标題，并設定為複選框樣式。
DevControlHelper 類的實作代碼如下所示：
public static void DrawCheckBox(DevExpress.XtraGrid.Views.Grid.ColumnHeaderCustomDrawEventArgs e, bool chk)
RepositoryItemCheckEdit repositoryCheck = e.Column.ColumnEdit as RepositoryItemCheckEdit;
if (repositoryCheck != null)
Graphics g = e.Graphics;
Rectangle r = e.Bounds;
DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo info;
DevExpress.XtraEditors.Drawing.CheckEditPainter painter;
DevExpress.XtraEditors.Drawing.ControlGraphicsInfoArgs args;
info = repositoryCheck.CreateViewInfo() as DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo;
painter = repositoryCheck.CreatePainter() as DevExpress.XtraEditors.Drawing.CheckEditPainter;
info.EditValue = chk;
info.Bounds = r;
info.CalcViewInfo(g);
args = new DevExpress.XtraEditors.Drawing.ControlGraphicsInfoArgs(info, new DevExpress.Utils.Drawing.GraphicsCache(g), r);
painter.Draw(args);
args.Cache.Dispose();
public static bool ClickGridCheckBox(DevExpress.XtraGrid.Views.Grid.GridView gridView, string fieldName, bool currentStatus)
bool result = false;
if (gridView != null)
gridView.ClearSorting();//禁止排序
gridView.PostEditor();
DevExpress.XtraGrid.Views.Grid.ViewInfo.GridHitInfo info;
Point pt = gridView.GridControl.PointToClient(Control.MousePosition);
info = gridView.CalcHitInfo(pt);
if (info.InColumn && info.Column != null && info.Column.FieldName == fieldName)
{
for (int i = 0; i < gridView.RowCount; i++)
{
gridView.SetRowCellValue(i, fieldName, !currentStatus);
}
return true;
}
return result;
}
2）傳統DataGridView實作全選操作
首先在第一列增加一個CheckBox控件，然後通過相關的事件，調整其位置，并相應對應的單擊全選操作，初始化代碼如下所示。
CheckBox HeaderCheckBox = null;
public FrmNormalGridViewSelect()
InitializeComponent();
if (!this.DesignMode)
HeaderCheckBox = new CheckBox();
HeaderCheckBox.Size = new Size(15, 15);
this.dgvSelectAll.Controls.Add(HeaderCheckBox);
HeaderCheckBox.KeyUp += new KeyEventHandler(HeaderCheckBox_KeyUp);
HeaderCheckBox.MouseClick += new MouseEventHandler(HeaderCheckBox_MouseClick);
dgvSelectAll.CurrentCellDirtyStateChanged += new EventHandler(dgvSelectAll_CurrentCellDirtyStateChanged);
dgvSelectAll.CellPainting += new DataGridViewCellPaintingEventHandler(dgvSelectAll_CellPainting);
}
事件實作了CheckBox重繪調整，并處理單擊事件，如下所示。
private void HeaderCheckBox_MouseClick(object sender, MouseEventArgs e)
HeaderCheckBoxClick((CheckBox)sender);
private void dgvSelectAll_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
if (e.RowIndex == -1 && e.ColumnIndex == 0)
ResetHeaderCheckBoxLocation(e.ColumnIndex, e.RowIndex);
private void ResetHeaderCheckBoxLocation(int ColumnIndex, int RowIndex)
Rectangle oRectangle = this.dgvSelectAll.GetCellDisplayRectangle(ColumnIndex, RowIndex, true);
Point oPoint = new Point();
oPoint.X = oRectangle.Location.X + (oRectangle.Width - HeaderCheckBox.Width) / 2 + 1;
oPoint.Y = oRectangle.Location.Y + (oRectangle.Height - HeaderCheckBox.Height) / 2 + 1;
HeaderCheckBox.Location = oPoint;
private void HeaderCheckBoxClick(CheckBox HCheckBox)
foreach (DataGridViewRow Row in dgvSelectAll.Rows)
((DataGridViewCheckBoxCell)Row.Cells["chkBxSelect"]).Value = HCheckBox.Checked;
dgvSelectAll.RefreshEdit();