#region 重绘Column、Row
int _RowHeadWidth = 41;
///
/// 重绘Column、Row
///
///
///
private void gdvPersonInfo_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
//如果是Column
if (e.RowIndex == -1)
{
drawColumnAndRow(e);
e.Handled = true;
//如果是Rowheader
}
else if (e.ColumnIndex < 0 && e.RowIndex >= 0)
{
drawColumnAndRow(e);
_RowHeadWidth = e.CellBounds.Width;
e.Handled = true;
}
}
///
/// Column和RowHeader绘制
///
///
void drawColumnAndRow(DataGridViewCellPaintingEventArgs e)
{
// 绘制背景色
using (LinearGradientBrush backbrush =
new LinearGradientBrush(e.CellBounds,
ProfessionalColors.MenuItemPressedGradientBegin,
ProfessionalColors.MenuItemPressedGradientMiddle
, LinearGradientMode.Vertical))
{
Rectangle border = e.CellBounds;
border.Width -= 1;
//填充绘制效果
e.Graphics.FillRectangle(backbrush, border);
//绘制Column、Row的Text信息
e.PaintContent(e.CellBounds); // 参数的意义？
//绘制边框
ControlPaint.DrawBorder3D(e.Graphics, e.CellBounds, Border3DStyle.Etched);
}
}
#endregion
#region 重绘选中状态
#region Row重绘前处理
///
/// Row重绘前处理，绘制行样式
///
///
///
private void gdvPersonInfo_RowPrePaint(object sender, DataGridViewRowPrePaintEventArgs e)
{
//是否是选中状态
if ((e.State & DataGridViewElementStates.Selected) ==
DataGridViewElementStates.Selected)
{
// 计算选中区域Size
int width = this.gdvPersonInfo.Columns.GetColumnsWidth(DataGridViewElementStates.Visible) + _RowHeadWidth;
Rectangle rowBounds = new Rectangle(
0, e.RowBounds.Top, width,
e.RowBounds.Height);
// 绘制选中背景色
using (LinearGradientBrush backbrush =
new LinearGradientBrush(rowBounds,
Color.SteelBlue,
e.InheritedRowStyle.ForeColor, 90.0f))
{
e.Graphics.FillRectangle(backbrush, rowBounds);
e.PaintCellsContent(rowBounds);
e.Handled = true; //告诉系统，已经自己重绘过了，该次绘制任务到此结束
}
}
}
#endregion
#region Row重绘后处理
///
/// Row重绘后处理，目前显示效果不大
///
///
private void gdvPersonInfo_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
{
int width = this.gdvPersonInfo.Columns.GetColumnsWidth(DataGridViewElementStates.Visible) + _RowHeadWidth;
Rectangle rowBounds = new Rectangle(
0, e.RowBounds.Top, width, e.RowBounds.Height);
if (this.gdvPersonInfo.CurrentCellAddress.Y == e.RowIndex)
{
//设置选中边框,显示为虚线的聚焦框
e.DrawFocus(rowBounds, true);
}
}
#endregion
#region Row刷新
///
/// 宽度改变后处理，暂时没出现效果
///
private void gdvPersonInfo_ColumnWidthChanged(object sender, DataGridViewColumnEventArgs e)
{
if (this.gdvPersonInfo.CurrentRow != null)
this.gdvPersonInfo.InvalidateRow(this.gdvPersonInfo.CurrentRow.Index);
}
///
/// 用户或代码滚动工作区时发生，暂没看见效果
///
protected override void OnScroll(ScrollEventArgs e)
{
base.OnScroll(e);
if (this.gdvPersonInfo.CurrentRow != null)
this.gdvPersonInfo.InvalidateRow(this.gdvPersonInfo.CurrentRow.Index);
}
#endregion
#endregion 