private void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
if (e.ColumnIndex == 2 && e.RowIndex != -1 || e.ColumnIndex == 3 && e.RowIndex != -1 || e.ColumnIndex == 4 && e.RowIndex != -1)
{
Brush bruch = new SolidBrush(dataGridView1.GridColor);
SolidBrush sbruch = new SolidBrush(e.CellStyle.BackColor);
using(Pen pen = new Pen(bruch))
{
e.Graphics.FillRectangle(sbruch,e.CellBounds);
if (e.RowIndex < dataGridView1.Rows.Count - 1 && dataGridView1.Rows[e.RowIndex + 1].Cells[e.ColumnIndex].Value != null && dataGridView1.Rows[e.RowIndex + 1].Cells[e.ColumnIndex].Value.ToString() != e.Value.ToString())
{
e.Graphics.DrawLine(pen, e.CellBounds.Left, e.CellBounds.Bottom - 1, e.CellBounds.Right, e.CellBounds.Bottom - 1);
e.Graphics.DrawLine(pen, e.CellBounds.Right - 1, e.CellBounds.Top, e.CellBounds.Right - 1, e.CellBounds.Bottom);
}
else
{
e.Graphics.DrawLine(pen, e.CellBounds.Right - 1, e.CellBounds.Top, e.CellBounds.Right - 1, e.CellBounds.Bottom);
}
if (e.RowIndex == dataGridView1.Rows.Count - 1)
{
e.Graphics.DrawLine(pen, e.CellBounds.Left, e.CellBounds.Bottom - 1, e.CellBounds.Right, e.CellBounds.Bottom - 1);
}
if (e.Value != null)
{
if (!(e.RowIndex > 0 && dataGridView1.Rows[e.RowIndex - 1].Cells[e.ColumnIndex].Value.ToString() == e.Value.ToString()))
{
e.Graphics.DrawString(e.Value.ToString(),e.CellStyle.Font,Brushes.Black,e.CellBounds.X+2,e.CellBounds.Y+5,StringFormat.GenericDefault);
}
}
e.Handled = true; }
}
}
转载来自:http://wangyi-1984.diandian.com/post/2012-02-15/40030786188