c# – 将IQueryable列表转换为通用列表？

发布时间：2020-12-16 01:53:08 所属栏目：百科来源：网络整理

导读：我试图调用GetScanningLogOnSettings(),它查询ScanningDepartments表以获取部门,然后创建ApplicationLogOnModel实例,将查询结果分配给ApplicationLogOnModel中的变量,并返回结果. private ApplicationLogOnModel GetScanningLogOnSettings() { var mesEntity

我试图调用GetScanningLogOnSettings(),它查询ScanningDepartments表以获取部门,然后创建ApplicationLogOnModel实例,将查询结果分配给ApplicationLogOnModel中的变量,并返回结果.

private ApplicationLogOnModel GetScanningLogOnSettings()
   {
       var mesEntity = new MESEntities();
       var departments = from dept in mesEntity.ScanningDepartments
                         select dept.Department.ToList();

       ApplicationLogOnModel depts = new ApplicationLogOnModel()
       {
           Department = departments
       };

       return depts;
   }

它给了我：

“Cannot implicitly convert type
'System.Linq.IQueryable<System.Collections.Generic.List<char>> to
'System.Collections.Generic.List<Models.Department>'

尝试转换到列表,我遇到了一些麻烦.

解决方法

你遗漏了一些括号：

var departments = (from dept in mesEntity.ScanningDepartments
                   select dept.Department).ToList();

您的代码调用dept.Department上的ToList()而不是整个查询.

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!