如何改变GridView中添加的控件的属性

Question

我的GridView中“帐号类型”字段用DropDownList显示，初始Enable=false,我想在点击“编辑”时让Enable=true，该如何实现，实在rowEditing事件中实现吗？<Columns>   
                   <asp:TemplateField HeaderText="帐号">
                       <EditItemTemplate>
                           <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("Acc_ID") %>' EnableTheming="false" Width="30px"></asp:TextBox>
                       </EditItemTemplate>
                       <ItemStyle Width="50px" />
                       <ItemTemplate>
                           <asp:Label ID="Label1" runat="server" Text='<%# Bind("Acc_ID") %>'></asp:Label>
                       </ItemTemplate>
                   </asp:TemplateField>
                   <asp:TemplateField HeaderText="密码">
                       <EditItemTemplate>
                           <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("Acc_Psd") %>' EnableTheming="false" Width="30px"></asp:TextBox>
                       </EditItemTemplate>
                       <ItemStyle Width="50px" />
                       <ItemTemplate>
                           <asp:Label ID="Label2" runat="server" Text='<%# Bind("Acc_Psd") %>'></asp:Label>
                       </ItemTemplate>
                   </asp:TemplateField>
                   <asp:TemplateField HeaderText="帐号类型">   
                       <ItemTemplate>   
                           <asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' Enabled="false">   
                           </asp:DropDownList>   
                       </ItemTemplate>   
                   </asp:TemplateField>  
                   <asp:TemplateField HeaderText="医院名称">
                       <EditItemTemplate>
                           <asp:Label ID="TextBox3" runat="server" Text='<%# Eval("Hos_Name") %>' EnableTheming="false" Width="50px"></asp:Label>
                       </EditItemTemplate>
                       <ItemStyle Width="100px" />
                       <ItemTemplate>
                           <asp:Label ID="Label3" runat="server" Text='<%# Bind("Hos_Name") %>'></asp:Label>
                       </ItemTemplate>
                   </asp:TemplateField>
                   <asp:TemplateField HeaderText="帐号状态">
                       <ItemTemplate>   
                           <asp:DropDownList ID="DropDownList2" runat="server" DataSource='<%# ddlbind2()%>' Enabled="false">   
                           </asp:DropDownList>   
                       </ItemTemplate>
                       <ItemStyle Width="50px" />
                   </asp:TemplateField>
                   <asp:CommandField ShowSelectButton="True">
                        <ItemStyle Width = "50" /> 
                   </asp:CommandField>  
                   <asp:CommandField ShowEditButton="True" />   
                   <asp:CommandField ShowDeleteButton="True" />   
               </Columns>

Answer 1

EditItemTemplate里放个DropDownList吧。也不用设什么Enabled，默认就是可编辑。关键是设置好它的Bind.

Answer 2

你好像没搞明白<EditTemplate>里的东西只有在你点击“编辑”按钮时才会显示出来。默认GridView只会显示<ItemTemplate>内的东西。所以你设置Enabled=false什么的多余。

Answer 3

现在的问题是，如果放在<EditTemplate>，点击“编辑”时，它总是显示第一个索引的内容，我在什么地方怎么样根据动态绑定的数据源来选择要显示的内容？

Answer 4

这是两个模板的东西，什么都不用设置，普通项模板里直接放入DropDownList后设置Eabled=false
在编辑项模板中，放入DropDownList什么都不用做，就ok了

Answer 5

  <asp:Repeater ID="Repeater1" runat="server" 
            onitemdatabound="Repeater1_ItemDataBound" 
            onitemcommand="Repeater1_ItemCommand">
            <HeaderTemplate>
                <table>
                <tr>
                    <td>
                        ShipperID
                    </td>
                    <td>
                        CompanyName
                    </td>
                    <td>
                        Phone
                    </td>
                    <td>
                        下拉列
                    </td>
                </tr>
            </HeaderTemplate>
            <ItemTemplate>
                <tr>
                    <td>
                        <asp:Label ID="Label1" runat="server" Text='<%#Eval("ShipperID") %>'></asp:Label>
                    </td>
                    <td>
                        <asp:Label ID="Label2" runat="server" Text='<%#Eval("CompanyName") %>'></asp:Label>
                    </td>
                    <td>
                        <asp:Label ID="Label3" runat="server" Text='<%#Eval("Phone") %>'></asp:Label>
                    </td>
                    <td>
                        <asp:DropDownList ID="DropDownList1" runat="server" Enabled="false">
                        </asp:DropDownList>
                    </td>
                    <td>
                        <asp:Button ID="Button1" runat="server" Text="编辑" CommandName="Edit"/>
                    </td>
                </tr>
            </ItemTemplate>
            <FooterTemplate>
                </table></FooterTemplate>
        </asp:Repeater>后台
 protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            Bind();
        }
    }
    public void Bind()
    {
        Repeater1.DataSource = from d in dc.Shippers select d;
        Repeater1.DataBind();
    }
 protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
    {
        if (e.CommandName == "Edit")
        {
            (e.Item.FindControl("DropDownList1") as DropDownList).Enabled = true;
        }
    }