Gridview使用（三）Gridview中绑定DropDownList

1、页面代码

                        <asp:TemplateField HeaderText="等级">
                            <ItemTemplate>
                                <asp:Label ID="Label6" runat="server" Text='<%# FormatUserlevel(Eval("User_UserLevel"))%>'></asp:Label>
                            </ItemTemplate>
                            <EditItemTemplate>
  //这个label的作用是为了在后台控制 当你点击编辑按钮的时 DropDownList 的选中值，                         <asp:Label ID="Label7" runat="server" Text='<%# Eval("User_UserLevel")%>' Visible="false"></asp:Label>
                                <asp:DropDownList ID="ddl_userLevel" runat="server" >
                                </asp:DropDownList>
                            </EditItemTemplate>
                        </asp:TemplateField>

将此列设为模版，在现实数据的时候是以label形式，当点击控件自带的编辑按钮的时候就是以DropDownList形势显示

2、后台代码

    protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        SystemMemberLevel bll = new SystemMemberLevel();
        IList<SystemMemberLevelModel> list = bll.GetAllList();
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            DropDownList ddl = ((DropDownList)e.Row.FindControl("ddl_userLevel"));
            Label lb = ((Label)e.Row.FindControl("Label7"));

            if (ddl != null)
            {
                ddl.DataSource = list;
                ddl.DataTextField = "name";
                ddl.DataValueField = "id";
                ddl.SelectedValue = lb.Text;
                ddl.DataBind();
            }  
        }
    }