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GridControl在不同版本（目前使用14.1.8）提供了多种不同的视图，它不仅比DataGridView强大，而且在数据加载性能各方面也有了很大的提升。
在此对之前的研究做一份整理记录，以备后用。
------------------------------ 强大的分割线 ------------------------------
表格控件：GridView相当于DataGridView效果，算是GridControl最常使用到的视图。
以下分实现功能进行总结：
1. 添加CheckBox到行头处
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gridView1.OptionsSelection.CheckBoxSelectorColumnWidth = 40;
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gridView1.OptionsSelection.MultiSelect = true;
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gridView1.OptionsSelection.MultiSelectMode = DevExpress.XtraGrid.Views.Grid.GridMultiSelectMode.CheckBoxRowSelect;
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gridView1.OptionsSelection.ShowCheckBoxSelectorInColumnHeader = DevExpress.Utils.DefaultBoolean.True;
效果图：
2.合并行
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gridView1.OptionsView.AllowCellMerge = true;
效果图：
3.重绘(GridView)标题CheckBox样式
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private void YnGridView_CustomDrawColumnHeader(object sender, ColumnHeaderCustomDrawEventArgs e)
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{
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if (e.Column != null && e.Column.Name == "DX$CheckboxSelectorColumn" && this.OptionsSelection.ShowCheckBoxSelectorInColumnHeader != DefaultBoolean.False)
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{
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bool value = (this.SelectedRowsCount == this.DataRowCount);
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RepositoryItemCheckEdit repositoryCheck = null;
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if (e.Column.RealColumnEdit == null)
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{
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repositoryCheck = new RepositoryItemCheckEdit();
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}
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else
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{
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repositoryCheck = e.Column.RealColumnEdit as RepositoryItemCheckEdit;
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}
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e.Info.InnerElements.Clear();
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e.Painter.DrawObject(e.Info);
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DrawCheckBox(repositoryCheck, e.Graphics, e.Bounds, value);
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e.Handled = true;
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}
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}
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protected void DrawCheckBox(RepositoryItemCheckEdit edit, Graphics g, Rectangle r, bool value)
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{
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DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo info;
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DevExpress.XtraEditors.Drawing.CheckEditPainter painter;
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DevExpress.XtraEditors.Drawing.ControlGraphicsInfoArgs args;
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info = edit.CreateViewInfo() as DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo;
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painter = edit.CreatePainter() as DevExpress.XtraEditors.Drawing.CheckEditPainter;
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info.EditValue = value;
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info.Bounds = r;
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info.CalcViewInfo(g);
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args = new DevExpress.XtraEditors.Drawing.ControlGraphicsInfoArgs(info, new DevExpress.Utils.Drawing.GraphicsCache(g), r);
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painter.Draw(args);
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args.Cache.Dispose();
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}
4.添加(GridView)无数据水印
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protected override void RaiseCustomDrawEmptyForeground(CustomDrawEventArgs e)
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{
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if (this.RowCount == 0 && !e.Handled)
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{
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Image img = Properties.Resources.水印_无数据;
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RectangleF actualRectF;
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int actualHeight = e.Bounds.Height - 26;
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if (e.Bounds.Width < img.Width || actualHeight < img.Height)
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{
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float factor1 = e.Bounds.Width * 1f / img.Width;
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float factor2 = actualHeight * 1f / img.Height;
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float factor = Math.Min(factor1, factor2);
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float x = (e.Bounds.Width - img.Width * factor) / 2;
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float y = (e.Bounds.Height - img.Height * factor) + 26 / 2;
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actualRectF = new RectangleF(x, y, img.Width * factor, img.Height * factor);
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}
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else
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{
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actualRectF = new RectangleF((e.Bounds.Width - img.Width) / 2f, (actualHeight - img.Height) / 2f + 26, img.Width, img.Height);
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}
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e.Graphics.DrawImage(img, actualRectF);
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e.Handled = true;
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}
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base.RaiseCustomDrawEmptyForeground(e);
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}
效果图：
5. 重绘(GridView)选中行与悬停行
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private int hotTrackRow = DevExpress.XtraGrid.GridControl.InvalidRowHandle;
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public int HotTrackRow
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{
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get
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{
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return hotTrackRow;
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}
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set
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{
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if (hotTrackRow != value)
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{
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int prevHotTrackRow = hotTrackRow;
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hotTrackRow = value;
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if (this.ActiveEditor != null)
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{
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this.PostEditor();
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}
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this.RefreshRow(prevHotTrackRow);
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this.RefreshRow(hotTrackRow);
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if (hotTrackRow >= 0)
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{
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GridControl.Cursor = Cursors.Hand;
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}
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else
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{
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GridControl.Cursor = Cursors.Default;
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}
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}
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}
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}
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private void YnGridView_MouseMove(object sender, MouseEventArgs e)
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{
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GridHitInfo info = this.CalcHitInfo(new Point(e.X, e.Y));
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if (info.InRowCell)
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{
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HotTrackRow = info.RowHandle;
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}
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else
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{
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HotTrackRow = DevExpress.XtraGrid.GridControl.InvalidRowHandle;
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}
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}
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private void YnGridView_MouseLeave(object sender, EventArgs e)
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{
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HotTrackRow = DevExpress.XtraGrid.GridControl.InvalidRowHandle;
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}
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protected override DevExpress.Utils.AppearanceObject GetRowCellStyle(int rowHandle, GridColumn column, GridRowCellState state, AppearanceObject appearance)
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{
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if (rowHandle == HotTrackRow)
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{
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appearance.BackColor = SkinManager.CurrentSkin.GridViewBorderStyle.HoverRowBackColor;
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appearance.ForeColor = SkinManager.CurrentSkin.GridViewBorderStyle.HoverRowForeColor;
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}
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else if (rowHandle == this.FocusedRowHandle || this.IsRowSelected(rowHandle))
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{
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appearance.BackColor = SkinManager.CurrentSkin.GridViewBorderStyle.SelectedRowBackColor;
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appearance.ForeColor = SkinManager.CurrentSkin.GridViewBorderStyle.HoverRowForeColor;
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}
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return base.GetRowCellStyle(rowHandle, column, state, appearance);
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}
效果图：
另外还可参考：GridControl常见用法 | 
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