获取gridview 某列的值

 string id= GridView1.DataKeys[e.RowIndex].Value.ToString();

 string id = GridView1.Rows[e.RowIndex].Cells[0].Text.ToString();

 string id = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[0].Controls[0])).Text.ToString();

 string 123= ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].FindControl("TextBox1"))).Text.ToString();

 string 123= ((TextBox)(GridView1.Rows[e.RowIndex].Cells[4].Controls[0])).Text.ToString();

在GridView的RowDataBound事件中获取某行某列的值！

// 判断订单状态填充“操作”列   
protected void gdvOrders_RowDataBound(object sender, GridViewRowEventArgs e)   
{           
    if (e.Row.RowType == DataControlRowType.DataRow)   
    {   
        DataRowView drv = (DataRowView)e.Row.DataItem ;   
        if (drv.Row["Status"].ToString() == "审核中")   
        {   
            ((Label)e.Row.Cells[6].FindControl("lblOperator")).Text = "我要改单";   
        }   
        if (drv.Row["Status"].ToString() == "已发货" &&    
                drv.Row["ResponseDate"].ToString() == "")   
        {   
            ((Label)e.Row.Cells[6].FindControl("lblOperator")).Visible = false;   
            ((LinkButton)e.Row.Cells[6].FindControl("lbtnAcceptGoods")).Visible = true;   
        }   
    }           
}