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  • 数据库中有的字段为null时,反馈到页面上是什么也不显示?如何用一个【无】字来代替呢?

    <asp:ListView ID="listViewCustomer" DataSourceID="ods_Customer" runat="server" 
            DataKeyNames="CustomerId">        
            <EditItemTemplate>
                <tr style="">
                    <td>
                        <asp:TextBox ID="FNameTextBox" runat="server" Text='<%# Bind("FName") %>' />
                    </td>
                    <td>
                        <asp:TextBox ID="FAddressTextBox" runat="server" 
                            Text='<%# Bind("FAddress") %>' />
                    </td>
                    <td>
                        <asp:TextBox ID="FTelTextBox" runat="server" Text='<%# Bind("FTel") %>' />
                    </td>
                    <td>
                        <asp:TextBox ID="FFaxTextBox" runat="server" Text='<%# Bind("FFax") %>' />
                    </td>
                    <td>
                        <asp:Button ID="UpdateButton" runat="server" CommandName="Update" Text="更新" />
                        <asp:Button ID="CancelButton" runat="server" CommandName="Cancel" Text="取消" />
                    </td>
                </tr>
            </EditItemTemplate>
            <EmptyDataTemplate>
                <table runat="server" style="">
                    <tr>
                        <td>
                            未返回数据。</td>
                    </tr>
                </table>
            </EmptyDataTemplate>        
            <ItemTemplate>
                <tr style="">
                    <td>                                        
                        <asp:Label ID="FNameLabel" runat="server" Text='<%# Eval("FName") %>' />
                    </td>
                    <td>                    
                        <asp:Label ID="FAddressLabel" runat="server" Text='<%# (Eval("FAddress").ToString() == string.Empty) ? "无" : Eval("FAddress") %>' />
                    </td>
                    <td>
                        <asp:Label ID="FTelLabel" runat="server" Text='<%# (Eval("FTel").ToString() == string.Empty) ? "无" : Eval("FTel") %>' />
                    </td>
                    <td>
                        <asp:Label ID="FFaxLabel" runat="server" Text='<%# Eval("FFax").ToString() == string.Empty ? "无" : Eval("FFax") %>' />
                    </td>
                    <td>
                        <asp:Button ID="DeleteButton" runat="server" CommandName="Delete" Text="删除" />
                        <asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="编辑" />
                    </td>
                </tr>
            </ItemTemplate>
            <LayoutTemplate>
                <table runat="server">
                    <tr runat="server">
                        <td runat="server">
                            <table ID="itemPlaceholderContainer" runat="server" border="0" style="">
                                <tr runat="server" style="">
                                    <th runat="server">
                                        FName</th>
                                    <th runat="server">
                                        FAddress</th>
                                    <th runat="server">
                                        FTel</th>
                                    <th runat="server">
                                        FFax</th>
                                    <th id="Th1" runat="server">
                                    </th>
                                </tr>
                                <tr ID="itemPlaceholder" runat="server">
                                </tr>
                            </table>
                        </td>
                    </tr>
                    <tr runat="server">
                        <td runat="server" style="">
                            <asp:DataPager ID="DataPager1" runat="server">
                                <Fields>
                                    <asp:NextPreviousPagerField ButtonType="Button" ShowFirstPageButton="True" 
                                        ShowLastPageButton="True" />
                                </Fields>
                            </asp:DataPager>
                        </td>
                    </tr>
                </table>
            </LayoutTemplate>        
        </asp:ListView>
    

      主要是看ItemTemplate部分,另外值得一提的是编辑模板不要改动,那样会正常的更新回数据库

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  • 原文地址:https://www.cnblogs.com/dianyitongxiao/p/3157439.html
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