我测试过系统了，其他都没问题，但是“销售管理”“销售开单”两地方都出错，看样子是数据库问题，希望专家能给予解释，错误提示如下：<br/>Server Error in '/' Application.<br/>--------------------------------------------------------------------------------<br/><br/>Method not found: 'Leyp.SQLServerDAL.ViewDAL.VuserDAL Leyp.SQLServerDAL.Factory.getVuserDAL()'. <br/>Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. <br/><br/>Exception Details: System.MissingMethodException: Method not found: 'Leyp.SQLServerDAL.ViewDAL.VuserDAL Leyp.SQLServerDAL.Factory.getVuserDAL()'.<br/><br/>Source Error: <br/><br/><br/>Line 157:&nbsp;&nbsp;&nbsp;&nbsp;&lt;tr&gt;<br/>Line 158:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;td style=&quot;width: 440px&quot;&gt;<br/>Line 159:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;快递配送人：&nbsp;&nbsp;&lt;cc2:deliveryuserdroplist id=&quot;DeliveryUserDropList1&quot; runat=&quot;server&quot;&gt;&lt;/cc2:deliveryuserdroplist&gt; <br/>Line 160:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;input name=&quot;按钮&quot; type=&quot;button&quot; id=&quot;Button4&quot; style=&quot;width: 103px&quot;&nbsp;&nbsp;value=&quot;快速生成发货单&quot; /&gt;&lt;/td&gt;<br/>Line 161:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;td style=&quot;height: 21px&quot;&gt;