Winform 程序中DataGridView 控件添加行号

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 private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)     

    {            

　　 Rectangle rectangle = new Rectangle(e.RowBounds.Location.X,                 e.RowBounds.Location.Y,     dataGridView1.RowHeadersWidth,                 e.RowBounds.Height);    

            TextRenderer.DrawText(e.Graphics, (e.RowIndex + 1).ToString(),                 dataGridView1.RowHeadersDefaultCellStyle.Font,                 rectangle,                 dataGridView1.RowHeadersDefaultCellStyle.ForeColor,                 TextFormatFlags.VerticalCenter | 　　　　　　　　　　　　TextFormatFlags.Right);        

}

Winform 程序中DataGridView 控件添加行号

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原文地址：http://www.cnblogs.com/xakml/p/RowNo.html