gridview问题

Question

我想做一个效果，在gridview中的第一行第二列的值如果是系统管理员的话，就不能删除 
部分代码： 
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" PageSize="4" OnRowCommand="GridView1_RowCommand" OnRowDataBound="GridView1_RowDataBound" OnSelectedIndexChanging="GridView1_SelectedIndexChanging"> 
            <Columns> 
                <asp:BoundField DataField="UserId" HeaderText="用户编号"> 
                    <ItemStyle CssClass="table" HorizontalAlign="Center" VerticalAlign="Middle" /> 
                </asp:BoundField> 
                <asp:BoundField DataField="UserName" HeaderText="用户姓名" /> 
                <asp:BoundField DataField="Limication" HeaderText="用户权限" /> 
                <asp:BoundField DataField="telephone" HeaderText="联系方式" /> 
                <asp:TemplateField HeaderText="操作"> 
                    <ItemTemplate> 
                        <asp:Button ID="btnupdate" runat="server" CommandName="btnupdate" CssClass="btn" 
                            Text="修改" /> 
                    </ItemTemplate> 
                </asp:TemplateField> 
                <asp:TemplateField HeaderText="操作"> 
                    <ItemTemplate> 
                        <asp:Button ID="Btndelete" runat="server"　CssClass="btn" Text="删除" CommandName="Delinfo" /> 
                    </ItemTemplate> 
                </asp:TemplateField> 
            </Columns> 
            <PagerSettings Mode="NextPrevious" /> 
            <PagerStyle HorizontalAlign="Right" VerticalAlign="Middle" /> 
        </asp:GridView>
cs代码：
 protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {       
            string Id;
            int RowIndex;
            RowIndex = Convert.ToInt32(e.CommandArgument.ToString());
            string StrConn = ConfigurationManager.ConnectionStrings["ConnString"].ConnectionString;
            if (e.CommandName == "Delinfo")
            {
                Id = GridView1.Rows[RowIndex].Cells[0].Text;
                string Sql = "delete from tb_User where UserId = " + Id;
                ExecPro.ExecPro.ExecuteNonQuery(StrConn, CommandType.Text, Sql);
                showuser();
                {
                    Response.Write("<script language=javascript>alert('删除成功！');historyback();</script>");
                }
            }            if (e.CommandName == "btnupdate")
            {
                Id = GridView1.Rows[RowIndex].Cells[0].Text;
                Response.Redirect("04-01-update.aspx?ID=" + Id);
            }            }
    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {               
        if (e.Row.RowType == DataControlRowType.DataRow)
        {            Button But = (Button)e.Row.Cells[5].FindControl("Btndelete");
            But.CommandArgument = e.Row.RowIndex.ToString();     //定义删除按钮的命令参数        }
        if (e.Row.RowType == DataControlRowType.DataRow)
        {            Button But = (Button)e.Row.Cells[4].FindControl("btnupdate");
            But.CommandArgument = e.Row.RowIndex.ToString();        }
    }
我是新手，赐教，也不知道在哪个事件里写，怎么判断

Answer 1

加一个条件语句判断不就可以了啊 
xzzz = GridView1.Rows[1].Cells[2].Value

Answer 2

当你点击删除按钮事件里写
if(GridView1.Rows[1].Cells[2].Value == "管理员")
{
   //提示不可删除
}
else
{
   //删除操作
}

Answer 3

在显示是否删除的时候用 三元表示式判断下 
例如 能删除的用户字段是usename能删除的人是admin
那么就   <asp:Button ID="Btndelete" runat="server"　CssClass="btn" Text="删除" CommandName="Delinfo" visble=' <%bind("Usename")=="admin"?true:false'%>
/> 

Answer 4

我建议还是充分利用asp.net 2.0的GridView.RowDeleting事件。在这里取得当前行GridViewRow，然后如果满足条件就e.Cancel=true;（不记得是具体怎样了，大概这意思）。

Answer 5

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
        if (e.Values["字段名"].ToString() == "管理员")
        {          
            e.Cancel = true;
        }
 }