iqueryable

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Multi-Threaded SubQueries using Entity Framework throws errors

I have been trying to update the performance of my code in regards to database queries.The problem I am currently running into is that I cant seem to find a way to get a new context for each subQuery.[详细]

2023-03-07 05:43 分类：问答
Iqueryable as a subquery to filter another iqueryable

I have a many to many relationship (Sites, Categories, CategoriesXSite) and two iqueryable defined v开发者_开发问答ariables like this:[详细]

2023-03-04 19:54 分类：问答
how to change an item in IQueryable<T>?

i have a the following class : class myClass { string b; string c; string d; } and the following list :[详细]

2023-03-04 18:31 分类：问答
Curious problem getting an IQueryable<int> collection to work in a foreach loop

I\'m building a repository method (Entity Framework) to take in a collection of ids supplied by checkboxes in a form as part of a CMS, and updating a lookup table (entity set) that relates topics to p[详细]

2023-03-03 08:15 分类：问答
Why would IQueryable<T>.FirstorDefault() return the same reference everytime of one object type and not another?

I came across this while pl开发者_高级运维aying with LINQ to SQL and can\'t seem to see it in a light that makes any sense.I have an IQueryable as:[详细]

2023-02-28 08:25 分类：问答
need help converting C# foreach loop to lambda

Can the following loop be implem开发者_开发技巧ented using IQueryable, IEnumerable or lambda expressions with linq[详细]

2023-02-27 11:43 分类：问答
How to select a date interval in IQueryable<>?

I have a IQueryable<Journey> that i collect from my entity model. I want to use this to get a new set of IQueryable<Journey> but only within a specific date interval from 2 textboxes on my[详细]

2023-02-26 03:14 分类：问答
How to assign a property value of an IQueryable<T>?

I\'m using Entity Framework 4.1 Code First.In my entity, I have three date/time properties: public class MyEntity[详细]

2023-02-25 15:08 分类：问答
Shared IEnumerable<T> and IQueryable<T> in a multi-threaded application

I\'ve few doubts regarding how shared IEnumerable and IQueryable is accessed in multi-threaded application.[详细]

2023-02-25 06:13 分类：问答
Can I create a LINQ-to-Entity query on non-Entity Member fields

I have an Entity class that I have extended using the partial class syntax to have some derived properties.I would like to perform a query using the IQueryable<T> interface that uses the informa[详细]

2023-02-24 20:36 分类：问答