將IQueryable列表轉換爲通用列表？

Question

我試圖撥打GetScanningLogOnSettings()，查詢ScanningDepartments表獲取部門，然後創建ApplicationLogOnModel的實例，將查詢的結果分配給ApplicationLogOnModel中的變量，並返回結果。

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; 
    } 

它給我：

「無法隱式轉換類型 'System.Linq.IQueryable<System.Collections.Generic.List<char>>到 'System.Collections.Generic.List<Models.Department>'

試圖轉換到列表時遇到了一點小麻煩

Answer 1

是你。缺少一些括號：

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

您的代碼在dept.Department上調用ToList()而不是整個查詢。