无法获得动态OrderBy以在我的一般列表上工作 [英] Cannot get the dynamic OrderBy to work on my generic list

问题描述

我无法获得动态的OrderBy来处理我的常规列表；

I cannot get the dynamic OrderBy to work on my generic list;

var list = CacheObjects.CompetencyAssessments
                       .Select(x => new CompetencyAssessmentLineViewModel(x))
                       .ToList();

var sortInfo = string.Format("{0} {1}", request.SortingName, request.SortingOrder);

var displayList = list.AsQueryable()
                      .OrderBy(sortInfo)
                      .Skip(startIndex)
                      .Take(pageLength);

我为OrderBy的动态功能使用了一个字符串. 但是代码无法编译；

I am using a string for the dynamic functionality of OrderBy. But the code does not compile;

错误1无法从用法中推断出方法'System.Linq.Queryable.OrderBy(System.Linq.IQueryable，System.Linq.Expressions.Expression>)'的类型参数.尝试显式指定类型参数.

Error 1 The type arguments for method 'System.Linq.Queryable.OrderBy(System.Linq.IQueryable, System.Linq.Expressions.Expression>)' cannot be inferred from the usage. Try specifying the type arguments explicitly.

我在做什么错了?

方法的签名是:

public JsonResult GridData(JqGridRequest request)

和JqGridRequest来自NuGet包Lib.Web.Mvc.所以:

and JqGridRequest is from the NuGet package Lib.Web.Mvc. So:

• request.SortingName是带有字段名称的字符串，并且
• request.SortingOrder是排序顺序

• request.SortingName is a string with the name of the field, and
• request.SortingOrder is the sort order

请参阅: http://tpeczek.com/2011/03/jqgrid-and-aspnet-mvc-strongly-typed.html

推荐答案

问题是动态库在我的项目中被引用了两次.至少我知道如果再次发生这种情况该怎么办.

The problem was that the Dynamic library was referenced twice in my project. At least I know what to look out for if something like this happens again.

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