DataGridViewRowPrePaintEventArgs.Graphics 属性
定义
重要
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获取用于绘制当前 Graphics 的 DataGridViewRow。
public:
property System::Drawing::Graphics ^ Graphics { System::Drawing::Graphics ^ get(); };public System.Drawing.Graphics Graphics { get; }member this.Graphics : System.Drawing.GraphicsPublic ReadOnly Property Graphics As Graphics属性值
用于绘制当前 Graphics 的 DataGridViewRow。
示例
下面的代码示例演示如何使用 Graphics 属性绘制自定义背景。 变量 e的类型 DataGridViewRowPrePaintEventArgs。 此代码示例是 How to： Customize the Appearance of Rows in the Windows 窗体 DataGridView Control 中提供的较大示例的一部分。
// Determine whether the cell should be painted
// with the custom selection background.
if ((e.State & DataGridViewElementStates.Selected) ==
DataGridViewElementStates.Selected)
{
// Calculate the bounds of the row.
Rectangle rowBounds = new Rectangle(
this.dataGridView1.RowHeadersWidth, e.RowBounds.Top,
this.dataGridView1.Columns.GetColumnsWidth(
DataGridViewElementStates.Visible) -
this.dataGridView1.HorizontalScrollingOffset + 1,
e.RowBounds.Height);
// Paint the custom selection background.
using (Brush backbrush =
new System.Drawing.Drawing2D.LinearGradientBrush(rowBounds,
this.dataGridView1.DefaultCellStyle.SelectionBackColor,
e.InheritedRowStyle.ForeColor,
System.Drawing.Drawing2D.LinearGradientMode.Horizontal))
{
e.Graphics.FillRectangle(backbrush, rowBounds);
}
}
' Determine whether the cell should be painted with the
' custom selection background.
If (e.State And DataGridViewElementStates.Selected) = _
DataGridViewElementStates.Selected Then
' Calculate the bounds of the row.
Dim rowBounds As New Rectangle( _
Me.dataGridView1.RowHeadersWidth, e.RowBounds.Top, _
Me.dataGridView1.Columns.GetColumnsWidth( _
DataGridViewElementStates.Visible) - _
Me.dataGridView1.HorizontalScrollingOffset + 1, _
e.RowBounds.Height)
' Paint the custom selection background.
Dim backbrush As New _
System.Drawing.Drawing2D.LinearGradientBrush(rowBounds, _
Me.dataGridView1.DefaultCellStyle.SelectionBackColor, _
e.InheritedRowStyle.ForeColor, _
System.Drawing.Drawing2D.LinearGradientMode.Horizontal)
Try
e.Graphics.FillRectangle(backbrush, rowBounds)
Finally
backbrush.Dispose()
End Try
End If
注解
该 Graphics 类提供可用于自定义绘图的属性和方法。