Question

我知道还有其他一些关于此例外的帖子，但没有一个对我有帮助。

3个解决方案中的每一个都在我的本地计算机上工作，但不在Live-System / On the Server上。

随着PackageViewModels数量的增加，First Solution退出了工作。 - 实施第二解决方案。用户添加了两个项目，第二个解决方案也退出了工作 - 实现了第三个，从未在服务器上工作。：d

编辑： - 更多信息......函数GetTemplateTypes（），GetTemplateCategories（）和GetPackages（）返回通过ADO.net原始SQL从SQL Server 2008查询的模型列表。这些函数总是返回查询数据和theres永远不会有任何异常抛出。

public ActionResult Package_Read([DataSourceRequest] DataSourceRequest request)
    {
        try
        {
            var templateTypes = DBRepository.GetTemplateTypes();
            var templateCategories = DBRepository.GetTemplateCategories();
            var templatePackages = DBRepository.GetPackages();

// Third Solution, never worked

            List<PackageViewModel> packageViewModels = new List<PackageViewModel>();

            foreach (var templatePackage in templatePackages)
            {
                PackageViewModel packageViewModel = new PackageViewModel();
                packageViewModel.val1= templatePackage.val1;
                packageViewModel.val2= templatePackage.val2;
                packageViewModel.ID = templatePackage.ID;
                packageViewModel.Type =
                    (from t in templateTypes where t.ID == templatePackage.ID select t).First();
                packageViewModel.Category = (from t in templateCategories
                    where t.Category_ID == templatePackage.Category_ID
                    select t).First();
                packageViewModels.Add(packageViewModel);
            }


// Second Soltuion - Worked for an amount up to 14 packageViewModels

            var packageViewModels = templatePackages.Select(p => new PackageViewModel
            {
                VPackage_ID = p.VPackage_ID, 
                VType = (from t in templateTypes where t.ID == p.VType_ID select t).Single(), 
                VCategory = (from t in templateCategories 
                    where t.VCategory_ID == p.VCategory_ID select t).Single(), 
                val1 = p.val1, 
                val2 = p.val2
            }).ToList();




// First Solution - Worked till a specific number of PackageViewModels ( about 12)

            IEnumerable<PackageViewModel> packages = DBRepository.GetPackages()
                .Select(p => new PackageViewModel
                {
                    VPackage_ID = p.VPackage_ID,
                    VType = DBRepository.GetTemplateType(p.VType_ID),
                    VCategory = DBRepository.GetTemplateCategory(p.VCategory_ID),
                    val1 = p.val1,
                    val2 = p.val2,
                });


            var jsonResult = Json(packageViewModels.ToDataSourceResult(request), JsonRequestBehavior.AllowGet);
            jsonResult.MaxJsonLength = int.MaxValue;
            return jsonResult;
        }
        catch (Exception ex)
        {
            Util.logger.Error(ex.Message);
            return new JsonResult();
        }
    }

我绝对不知道如何处理这个问题。

提前致谢！

Answer 1

ERROR 2016-09-12 16:09:28,695 890063ms Util                   Package_Read            
At least one object must implement IComparable
ERROR 2016-09-12 16:09:28,696 890064ms Util                   Package_Read          - mscorlib
ERROR 2016-09-12 16:09:28,697 890065ms Util                   Package_Read            
at System.Collections.Comparer.Compare(Object a, Object b)
at System.Collections.Generic.ObjectComparer`1.Compare(T x, T y)
at System.Linq.EnumerableSorter`2.CompareKeys(Int32 index1, Int32 index2)
at System.Linq.EnumerableSorter`2.CompareKeys(Int32 index1, Int32 index2)
at System.Linq.EnumerableSorter`1.QuickSort(Int32[] map, Int32 left, Int32 right)
at System.Linq.EnumerableSorter`1.Sort(TElement[] elements, Int32 count)
at System.Linq.OrderedEnumerable`1.<GetEnumerator>d__1.MoveNext()
at System.Linq.Enumerable.<SkipIterator>d__30`1.MoveNext()
at Kendo.Mvc.Extensions.QueryableExtensions.Execute[TModel,TResult](IQueryable source, Func`2 selector)
at Kendo.Mvc.Extensions.QueryableExtensions.CreateDataSourceResult[TModel,TResult](IQueryable queryable, DataSourceRequest request, ModelStateDictionary modelState, Func`2 selector)
at Kendo.Mvc.Extensions.QueryableExtensions.ToDataSourceResult(IQueryable queryable, DataSourceRequest request, ModelStateDictionary modelState)
at Kendo.Mvc.Extensions.QueryableExtensions.ToDataSourceResult(IQueryable enumerable, DataSourceRequest request)
at Kendo.Mvc.Extensions.QueryableExtensions.ToDataSourceResult(IEnumerable enumerable, DataSourceRequest request)

错误被抛出

var jsonResult = Json(packageViewModels.ToDataSourceResult(request), JsonRequestBehavior.AllowGet);

找到一个解决方案，在视图中更改了kendo UI Grid的排序。仍然不明白为什么不同的解决方案正在发挥作用。现在看来一切正常。

至少有一个对象必须实现IComparable - 在本地计算机上工作，但在服务器上不工作

1 个答案: