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
gridView1.OptionsSelection.CheckBoxSelectorColumnWidth = 40; gridView1.OptionsSelection.MultiSelect = true; gridView1.OptionsSelection.MultiSelectMode = DevExpress.XtraGrid.Views.Grid.GridMultiSelectMode.CheckBoxRowSelect; gridView1.OptionsSelection.ShowCheckBoxSelectorInColumnHeader = DevExpress.Utils.DefaultBoolean.True;
效果图：
2.合并行
gridView1.OptionsView.AllowCellMerge = true;
效果图：
3.重绘(GridView)标题CheckBox样式
private void YnGridView_CustomDrawColumnHeader(object sender, ColumnHeaderCustomDrawEventArgs e) { if (e.Column != null && e.Column.Name == "DX$CheckboxSelectorColumn" && this.OptionsSelection.ShowCheckBoxSelectorInColumnHeader != DefaultBoolean.False) { bool value = (this.SelectedRowsCount == this.DataRowCount); RepositoryItemCheckEdit repositoryCheck = null; if (e.Column.RealColumnEdit == null) { repositoryCheck = new RepositoryItemCheckEdit(); } else { repositoryCheck = e.Column.RealColumnEdit as RepositoryItemCheckEdit; } e.Info.InnerElements.Clear(); e.Painter.DrawObject(e.Info); DrawCheckBox(repositoryCheck, e.Graphics, e.Bounds, value); e.Handled = true; } } protected void DrawCheckBox(RepositoryItemCheckEdit edit, Graphics g, Rectangle r, bool value) { DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo info; DevExpress.XtraEditors.Drawing.CheckEditPainter painter; DevExpress.XtraEditors.Drawing.ControlGraphicsInfoArgs args; info = edit.CreateViewInfo() as DevExpress.XtraEditors.ViewInfo.CheckEditViewInfo; painter = edit.CreatePainter() as DevExpress.XtraEditors.Drawing.CheckEditPainter; info.EditValue = value; 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(); }
4.添加(GridView)无数据水印
protected override void RaiseCustomDrawEmptyForeground(CustomDrawEventArgs e) { if (this.RowCount == 0 && !e.Handled) { Image img = Properties.Resources.水印_无数据; RectangleF actualRectF; int actualHeight = e.Bounds.Height - 26; if (e.Bounds.Width < img.Width || actualHeight < img.Height) { // 当前区域小于图片大小，进行缩放。 float factor1 = e.Bounds.Width * 1f / img.Width; float factor2 = actualHeight * 1f / img.Height; float factor = Math.Min(factor1, factor2); float x = (e.Bounds.Width - img.Width * factor) / 2; float y = (e.Bounds.Height - img.Height * factor) + 26 / 2; actualRectF = new RectangleF(x, y, img.Width * factor, img.Height * factor); } else { actualRectF = new RectangleF((e.Bounds.Width - img.Width) / 2f, (actualHeight - img.Height) / 2f + 26, img.Width, img.Height); } e.Graphics.DrawImage(img, actualRectF); e.Handled = true; } base.RaiseCustomDrawEmptyForeground(e); }
效果图：
5. 重绘(GridView)选中行与悬停行
private int hotTrackRow = DevExpress.XtraGrid.GridControl.InvalidRowHandle; public int HotTrackRow { get { return hotTrackRow; } set { if (hotTrackRow != value) { int prevHotTrackRow = hotTrackRow; hotTrackRow = value; if (this.ActiveEditor != null) { this.PostEditor(); } this.RefreshRow(prevHotTrackRow); this.RefreshRow(hotTrackRow); if (hotTrackRow >= 0) { GridControl.Cursor = Cursors.Hand; } else { GridControl.Cursor = Cursors.Default; } } } } private void YnGridView_MouseMove(object sender, MouseEventArgs e) { GridHitInfo info = this.CalcHitInfo(new Point(e.X, e.Y)); if (info.InRowCell) { HotTrackRow = info.RowHandle; } else { HotTrackRow = DevExpress.XtraGrid.GridControl.InvalidRowHandle; } } private void YnGridView_MouseLeave(object sender, EventArgs e) { HotTrackRow = DevExpress.XtraGrid.GridControl.InvalidRowHandle; } protected override DevExpress.Utils.AppearanceObject GetRowCellStyle(int rowHandle, GridColumn column, GridRowCellState state, AppearanceObject appearance) { if (rowHandle == HotTrackRow) { appearance.BackColor = SkinManager.CurrentSkin.GridViewBorderStyle.HoverRowBackColor; appearance.ForeColor = SkinManager.CurrentSkin.GridViewBorderStyle.HoverRowForeColor; } else if (rowHandle == this.FocusedRowHandle || this.IsRowSelected(rowHandle)) { appearance.BackColor = SkinManager.CurrentSkin.GridViewBorderStyle.SelectedRowBackColor; appearance.ForeColor = SkinManager.CurrentSkin.GridViewBorderStyle.HoverRowForeColor; } return base.GetRowCellStyle(rowHandle, column, state, appearance); }
效果图：
另外还可参考：GridControl常见用法
