Question

我要做个C#的datagridview控件，当向第一行输入数据的时候，自动增加的第二行的序号自动增加如：001,002？

如下图所示，急！

Answer 1

不要单独用一列做“序号”，把rowHead利用起来做你的“序号”（在行头显示行号的方法）

Answer 2

private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)
{
DataGridView temp = (DataGridView)sender;
using (SolidBrush b = new SolidBrush(temp.RowHeadersDefaultCellStyle.ForeColor))
{

if(e.RowIndex<10)
e.Graphics.DrawString(Convert.ToString("00"+e.RowIndex + 1, System.Globalization.CultureInfo.CurrentUICulture), e.InheritedRowStyle.Font, b, e.RowBounds.Location.X + 15, e.RowBounds.Location.Y + 5);
if (e.RowIndex < 100&&e.RowIndex>10)
e.Graphics.DrawString(Convert.ToString("0" + e.RowIndex + 1, System.Globalization.CultureInfo.CurrentUICulture), e.InheritedRowStyle.Font, b, e.RowBounds.Location.X + 15, e.RowBounds.Location.Y + 5);
if (e.RowIndex < 1000 && e.RowIndex > 100)
e.Graphics.DrawString(Convert.ToString(e.RowIndex + 1, System.Globalization.CultureInfo.CurrentUICulture), e.InheritedRowStyle.Font, b, e.RowBounds.Location.X + 15, e.RowBounds.Location.Y + 5);

}
}
private void dataGridView1_Paint(object sender, PaintEventArgs e)
{
DataGridView temp = (DataGridView)sender;
using (SolidBrush b = new SolidBrush(temp.RowHeadersDefaultCellStyle.ForeColor))
{
e.Graphics.DrawString("序号", temp.Font, b, 8, 5);
}
}

你看着改动下吧，基本就是这样的