GridView模板列编辑事件中，设置某一个字段只读，怎么操作？？？

[一锅小青蛙]

sqlcmd.Parameters.Add(new SqlParameter("@id", SqlDbType.Int, 4));
            sqlcmd.Parameters.Add(new SqlParameter("@number", SqlDbType.NChar, 20));
            sqlcmd.Parameters.Add(new SqlParameter("@name", SqlDbType.NChar,20));
            sqlcmd.Parameters.Add(new SqlParameter("@password", SqlDbType.NChar, 60));
            sqlcmd.Parameters.Add(new SqlParameter("@branch", SqlDbType.NChar, 20));
            sqlcmd.Parameters.Add(new SqlParameter("@grouptype", SqlDbType.SmallInt, 4));
            sqlcmd.Parameters.Add(new SqlParameter("@reviewmode", SqlDbType.NChar, 10));

            sqlcmd.Parameters["@id"].Value =((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim();
            sqlcmd.Parameters["@number"].Value = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim();
            sqlcmd.Parameters["@name"].Value = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim();
            sqlcmd.Parameters["@password"].Value = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[4].Controls[0])).Text.ToString().Trim();
            sqlcmd.Parameters["@branch"].Value = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[5].Controls[0])).Text.ToString().Trim();
            sqlcmd.Parameters["@grouptype"].Value = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[6].Controls[0])).Text.ToString().Trim();
            sqlcmd.Parameters["@reviewmode"].Value = ((TextBox)(GridView1.Rows[e.RowIndex].Cells[7].Controls[0])).Text.ToString().Trim();

我想让id字段的值只可读，怎么修改？
试过sqlcmd.Parameters["@id"].Value =GridView1.Rows[e.RowIndex].Cells[1].Text; 仍然是TextBox，可以修改状态。。。

[娃都会打酱油了]

绑定时设置this.GridView1.DataKeyNames，然后用类似下面的代码取值，就不要那个TextBox了

this.GridView1.DataKeys[e.RowIndex].Value["Id"]

[Hello World,]

<asp:BoundField ReadOnly="true" ……