本示例展示了如何通过 GridView.CustomDrawRowIndicator 事件定制 行指示器面板 中的单元格。

我们更改了在单元格中显示的文本并且保持 CustomDrawEventArgs.Handled 参数被设置为 false，而没有在此事件中绘制单元格。 在这种情况下，在事件处理程序执行完毕之后，单元格被根据 RowIndicatorCustomDrawEventArgs.Info 对象的设置进行绘制 (绘制新的显示文本)。 indicatorIcon 变量用于控制是否绘制标准的图标。 如果此属性的值为 false，则为了防止显示图像，而把 ImageIndex 属性值设置为 -1。

C#CopyCode image复制代码
using DevExpress.XtraGrid.Views.Grid;

//A flag specifying whether to draw default indicator glyphs
bool indicatorIcon = true;

private void gridView1_CustomDrawRowIndicator(object sender, 
RowIndicatorCustomDrawEventArgs e) {
    GridView view = (GridView)sender;
    //Check whether the indicator cell belongs to a data row
    if(e.Info.IsRowIndicator && e.RowHandle > 0) {
        e.Info.DisplayText = "Row " + e.RowHandle.ToString();
        if(!indicatorIcon) 
            e.Info.ImageIndex = -1;
    }
}
Visual BasicCopyCode image复制代码
Imports DevExpress.XtraGrid.Views.Grid

'A flag specifying whether to draw default indicator glyphs
Dim indicatorIcon As Boolean = True

Private Sub gridView1_CustomDrawRowIndicator(ByVal sender As Object, _
ByVal e As RowIndicatorCustomDrawEventArgs) Handles gridView1.CustomDrawRowIndicator
    Dim view As GridView = CType(sender, GridView)
    'Check whether the indicator cell belongs to a data row
    If e.Info.IsRowIndicator And e.RowHandle > 0) Then
        e.Info.DisplayText = "Row " + e.RowHandle.ToString()
        If Not indicatorIcon Then e.Info.ImageIndex = -1
    End If
End Sub