protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        for (int i = 0; i < GridView1.Rows.Count ; i++)
        {
            if (GridView1.Rows[i].Cells[1].Text == "admin")
            {
                GridView1.Rows[i].Cells[1].ForeColor = System.Drawing.Color.Black;
            }
            else
            {
                Response.Write(this.GridView1.Rows[i].Cells[1].Text.ToString());     
                //Response.Write(GridView1.Rows[i].Cells[0].Text);
                GridView1.Rows[i].Cells[1].ForeColor = System.Drawing.Color.Red;
            }        } 
    }
//Response.Write(this.GridView1.Rows[i].Cells[1].Text.ToString()); 这里所输出的值为空,
也就是说this.GridView1.Rows[i].Cells[1].Text.ToString()没有值,这是怎么回事,好像获取不到值。