ListView.selectedIndex始终在vb.net中返回值-1 [英] ListView.selectedIndex always returns value -1 in vb.net

问题描述

为什么ListView.selectedIndex总是在vb.net Framework 3.5中返回值-1?

我曾在C#.Net中尝试过同样的事情，但工作正常...

代码是:

why ListView.selectedIndex always returns value -1 in vb.net framework 3.5 ?

I have tried the same thing in C#.Net is working fine...

Code is:

<asp:ListView ID="lvSectors" runat="server" DataKeyNames="SectorID" OnItemCommand="lvSelectors_ItemCommand"

                            OnSelectedIndexChanged="lvSelectors_SelectedIndexChanged" OnSelectedIndexChanging="lvSelectors_SelectedIndexChanging">

                                <table id="itemPlaceholderContainer"  runat="server" align="center" border="1" cellpadding="0"

                                    cellspacing="0">
                                    <tr  runat="server" style="">
                                        <th align="center">
                                            <asp:LinkButton ID="lbSr_No" runat="server" CommandName="Sort" Width="150"><span style="color :Blue ">Sr No</span>
                                        </th>
                                        <th align="center">
                                            <asp:LinkButton ID="lbSector_Text" runat="server" CommandName="Sort" Width="150"><span style="color :Blue ">SectorName</span>
                                        </th>
                                        <th align="center">
                                            <asp:LinkButton ID="lbDescription" runat="server" CommandName="Sort" Width="150"><span style="color :Blue ">Description</span>
                                        </th>
                                        <th>
                                            Edit
                                        </th>
                                        <th>
                                            Delete
                                        </th>
                                    </tr>
                                    <tr id="itemPlaceholder"  runat="server">
                                    </tr>
                                </table>
                                <asp:DataPager ID="dpSectors" runat="server" PagedControlID="lvSectors">



                                <tr>
                                    <td align="center">
                                        <%#Container.DataItemIndex+1 %>
                                    </td>
                                    <td align="center">
                                        <asp:Label ID="lblSector_Text" runat="server" Text='<%#Bind("SectorText") %>'>

                                    </td>
                                    <td align="center">
                                        <asp:Label ID="lblDescription" runat="server" Text='<%#Bind("Description") %>'>

                                    </td>
                                    <td align="center" id="edit1">
                                        <asp:LinkButton ID="lbSector_Edit" runat="server" Width="150" CommandArgument='<%#Bind("SectorID") %>'

                                            CommandName="Select" Text="Edit" CssClass="editclass">
                                    </td>
                                    <td align="center">
                                        <asp:LinkButton ID="lbSector_Delete" runat="server" CommandArgument='<%#Bind("SectorID") %>'

                                            CommandName="Remove" Width="150" Text="Delete" CssClass="deleteClass" OnClientClick='return confirm("Are you sure you want to delete this entry?");'>
                                    </td>
                                </t

推荐答案

SelectedIndex属性有点混乱.我什至可以称其为框架中的错误.阅读此 [

The SelectedIndex property is more than a bit messed up. I would even go so far as to call it a bug in the framework. Read this[^].

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