Windowsforms：如何在DataGridView上绘制线条？

Question

我使用一个DataGridView在Windows应用程序（.NET 3.5）表现出一些彩色条（基本上是“在时间任务”）：

DataGridView 1 http://img195.imageshack.us/img195/879/datagridview1.png

我现在需要的是，以显示自定义图形“完成”栏取决于百分比值。这里是一个Photoshop处理图像：

DataGridView 2 http://img38.imageshack.us/img38/5615/datagridview2.png

任何暗示，我怎么能解决这个问题还是一个创造性的解决方案？

谢谢！

编辑：我不得不重绘电池，原因是其被“丢失”。这里是（VB.NET）代码的工作原理：

Private Sub DataGridView_CellPainting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellPaintingEventArgs) Handles DataGridView.CellPainting 

    If e.ColumnIndex < FIRST_DATA_COLUMN OrElse e.RowIndex < 0 Then Return 
    If e.Value Is Nothing Then Return 

    Dim BarValue As Integer = DirectCast(e.Value, Integer) 
    If BarValue = 0 Then Return 

    Dim BackColorBrush As New SolidBrush(e.CellStyle.BackColor) 
    Dim GridBrush As New SolidBrush(Me.DataGridView.GridColor) 
    Dim GridLinePen As New Pen(GridBrush) 

    ' -- Erase the cell 
    e.Graphics.FillRectangle(BackColorBrush, e.CellBounds) 

    ' -- Draw the grid lines (only the right and bottom lines; DataGridView takes care of the others) 
    e.Graphics.DrawLine(GridLinePen, e.CellBounds.Left, e.CellBounds.Bottom - 1, e.CellBounds.Right - 1, e.CellBounds.Bottom - 1) 
    e.Graphics.DrawLine(GridLinePen, e.CellBounds.Right - 1, e.CellBounds.Top, e.CellBounds.Right - 1, e.CellBounds.Bottom - 1) 

    ' -- Paint progress bar 
    Dim ProgressBarBrush As New SolidBrush(Color.Green) 
    Dim CellProgressBarRect As New Rectangle(e.CellBounds.X, e.CellBounds.Y + CELL_HEIGHT - PROGRESS_BAR_HEIGHT, BarValue, PROGRESS_BAR_HEIGHT) 
    e.Graphics.FillRectangle(ProgressBarBrush, CellProgressBarRect) 

    e.Handled = True 

End Sub 

Answer 1

你必须做一个自定义在Cell绘制。看看Cell Painting事件。