c# - 将 IQueryable 列表转换为通用列表？

Question

我正在尝试调用GetScanningLogOnSettings()，它查询ScanningDepartments表以获取部门，然后创建 的实例ApplicationLogOnModel，将查询的结果分配给 中的变量ApplicationLogOnModel，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：

“不能将类型隐式转换 'System.Linq.IQueryable<System.Collections.Generic.List<char>>为 'System.Collections.Generic.List<Models.Department>'

尝试转换为列表，但遇到了一些麻烦。

Answer 1

您缺少一些括号：

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

您的代码调用ToList()而dept.Department不是整个查询。