将IQueryable列表转换为通用列表？

Question

我试图拨打GetScanningLogOnSettings()，查询ScanningDepartments表获取部门，然后创建ApplicationLogOnModel的实例，将查询的结果分配给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; 
    } 

它给我：

“无法隐式转换类型 'System.Linq.IQueryable<System.Collections.Generic.List<char>>到 'System.Collections.Generic.List<Models.Department>'

试图转换到列表时遇到了一点小麻烦

Answer 1

是你。缺少一些括号：

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

您的代码在dept.Department上调用ToList()而不是整个查询。