sql - SelectCommand 错误：Validation(ASP.NET) 如果此属性值用引号括起来，则引号必须匹配

Question

我在 sqlserver 中进行了此查询，当我放入项目时，第一行显示为绿色，标题中有该错误，在第三行之后，它似乎不再在 SelectCommand 中，因为它是红色字母。我认为这是关于 < 或者可能是 ''。我该如何解决？谢谢

<asp:SqlDataSource ID="ds_order" runat="server" CancelSelectOnNullParameter="false"
                        ConnectionString="myconnection"
                        SelectCommand=
                        "SELECT SUM(Total) as Totais, DateCreated, 
                         CASE 
                             WHEN DAY(DateCreated) <=15 THEN CAST(YEAR(DateCreated) AS VARCHAR) + '-' + CAST(MONTH(DateCreated) AS VARCHAR) + '-1' 
                             ELSE CAST(YEAR(DateCreated) AS VARCHAR) + '-' + CAST(MONTH(DateCreated) AS VARCHAR) + '-16' 
                         END AS Month              
                         FROM Orders
                         WHERE ReferenceID = @refid 
                         GROUP BY DateCreated" ProviderName="System.Data.SqlClient">
        <SelectParameters>
            <asp:ControlParameter ControlID="ddl_ref_type" Name="refid" />
        </SelectParameters>
        </asp:SqlDataSource>

Answer 1

您需要用 XML 实体引用替换查询中的单引号和小于"，<以便 XML 格式正确：

<asp:SqlDataSource ID="ds_order" runat="server" CancelSelectOnNullParameter="false"
                        ConnectionString="myconnection"
                        SelectCommand=
                        "SELECT SUM(Total) as Totais, DateCreated, 
                         CASE 
                             WHEN DAY(DateCreated) &lt;=15 THEN CAST(YEAR(DateCreated) AS VARCHAR) + &quot;-&quot; + CAST(MONTH(DateCreated) AS VARCHAR) + &quot;-1&quot; 
                             ELSE CAST(YEAR(DateCreated) AS VARCHAR) + &quot;-&quot; + CAST(MONTH(DateCreated) AS VARCHAR) + &quot;-16&quot; 
                         END AS Month              
                         FROM Orders
                         WHERE ReferenceID = @refid 
                         GROUP BY DateCreated" ProviderName="System.Data.SqlClient">
        <SelectParameters>
            <asp:ControlParameter ControlID="ddl_ref_type" Name="refid" />
        </SelectParameters>
</asp:SqlDataSource>