DataList嵌套checkbox的问题

Question

前台以下是DataList中嵌套的checkbox
 <input type="checkbox" id="chkSelect" runat="server" value='<%# DataBinder.Eval(Container.DataItem, "Id")%>' NAME="chkSelect"/>  <INPUT  id="HdnSelectedValues" type="hidden"  name="HdnSelectedValues"  runat="server">后台CS
现在的问题是如何在后台的Insert按钮中取得checkbox选中的值并insert到数据库中？

Answer 1

有没有考虑用js取值呢？然后赋值隐藏域，后台Insert按钮取 隐藏域的值就可以了。

Answer 2

你的insert怎么写的》在什么位置？
你可以遍历
for(i=0;i<DataList1.Items.Count;i++)
{
  
HtmlInputCheckBox X = DataList1.Items[i].FindControl("chkSelect") as HtmlInputCheckBox;
X.Value就是
 
 }

Answer 3

我按照你的方法运用了,
for(i=0;i<DataList1.Items.Count;i++)
{HtmlInputCheckBox chkbox = DataList1.Items[i].FindControl("chkSelect") as HtmlInputCheckBox;
但是，程序执行到if (chkbox.Checked == true)
                    {
时报错，chkbox有问题，未将对象引用设置到对象的实例。

Answer 4

主要问题是找不到DataList1的checkbox

Answer 5

主要问题是找不到DataList2的checkbox

Answer 6

前台 <asp:DataList ID="dl1" runat="server" RepeatColumns="1">
                                                    <ItemTemplate>
                                                        <tr>
                                                            <td>                                                           
                                                               <table id="Table2" border="0">
                                                                    <tr>
                                                                       <td >                                                                    
                                                                            <%# DataBinder.Eval(Container.DataItem,"Name") %>
                                                                            ：
                                                                        </td>
                                                                    </tr>
                                                                </table>
                                                                <table id="Table3">
                                                                    <tr>                                                                      
                                                                        <td>
                                                                            <table id="Table5">
                                                                                <tr>
                                                                                    <td>
                                                                                        <asp:DataList ID="dl2" runat="server" RepeatColumns="3">
                                                                                            <ItemTemplate>
                                                                                              <input type="checkbox" id="chkSelect"  runat="server" value='<%# DataBinder.Eval(Container.DataItem, "Id")%>' NAME="chkSelect"/>
                                                                                                <%# GetMethod(DataBinder.Eval(Container.DataItem, "Name").ToString(), DataBinder.Eval(Container.DataItem, "WorkerNo").ToString())%>
                                                                                            </ItemTemplate>
                                                                                        </asp:DataList>
                                                                                    </td>
                                                                                </tr>
                                                                            </table>
                                                                        </td>
                                                                    </tr>
                                                                </table>
                                                            </td>
                                                        </tr>
                                                    </ItemTemplate>
                                                </asp:DataList>
后台
protected void btnSave_Click(object sender, System.EventArgs e)
{
for(i=0;i<dl2.Items.Count;i++)
{HtmlInputCheckBox chkbox = dl2.Items[i].FindControl("chkSelect") as HtmlInputCheckBox;}
}
但是，程序找不到dl2的checkbox

Answer 7

<asp:DataList ID="dl1" runat="server" RepeatColumns="1">
                                                    <ItemTemplate>
                                                        <tr>
                                                            <td>                                                           
                                                               <table id="Table2" border="0">
                                                                    <tr>
                                                                       <td >                                                                    
                                                                            <%# DataBinder.Eval(Container.DataItem,"Name") %>                                                                          
                                                                        </td>
                                                                    </tr>
                                                                </table>
                                                                <table id="Table3">
                                                                    <tr>                                                                      
                                                                        <td>
                                                                            <table id="Table5">
                                                                                <tr>
                                                                                    <td>
                                                                                        <asp:DataList ID="dl2" runat="server" RepeatColumns="3">
                                                                                            <ItemTemplate>
                                                                                              <input type="checkbox" id="chkSelect"  runat="server" value='<%# DataBinder.Eval(Container.DataItem, "Id")%>' NAME="chkSelect"/>
                                                                                                <%# GetMethod(DataBinder.Eval(Container.DataItem, "Name").ToString(), DataBinder.Eval(Container.DataItem, "WorkerNo").ToString())%>
                                                                                            </ItemTemplate>
                                                                                        </asp:DataList>
                                                                                    </td>
                                                                                </tr>
                                                                            </table>
                                                                        </td>
                                                                    </tr>
                                                                </table>
                                                            </td>
                                                        </tr>
                                                    </ItemTemplate>
                                                </asp:DataList>
后台
protected void btnSave_Click(object sender, System.EventArgs e)
{
for(i=0;i<dl2.Items.Count;i++)
{HtmlInputCheckBox chkbox = dl2.Items[i].FindControl("chkSelect") as HtmlInputCheckBox;}
}
但是，程序找不到dl2的checkbox

Answer 8

本帖最后由 net_lover 于 2012-03-06 10:03:27 编辑

  

Answer 9

非常感谢！
然后就是用HdnSelectedValues取checkbox的值的问题了
前台
<INPUT id="HdnSelectedValues" type="hidden" name="HdnSelectedValues" runat="server">
请问在后台的Insert按钮中如何用HdnSelectedValues取得checkbox选中的值并insert到数据库中？

Answer 10

HdnSelectedValues.Value
插入数据库就是sql语句