linq-to-objects

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Not only get duplicates from array, but need as well index of the duplicates

I have the following array: Driver[] predictions = new Driver[6]; predictions[0] = new Driver(10, \"Michael Schumacher\");[详细]

2023-03-20 10:26 分类：问答
Combine 2 tables in 1 class using LINQ

I have 2 classes: [Table(Name = \"_Reference2\")] public class Customer { [Column(Name = \"_IDRRef\")] public Binary CustomerRef { get; set; }[详细]

2023-03-20 04:53 分类：问答
Output a list/other data structure using linq query

is there a way to do a Console.WriteLine() on a Generic Collection example: List a has: a.Key[0]: apple[详细]

2023-03-17 16:55 分类：问答
Distinct in LINQ with anonymous types (in VB.NET)

Supposing the referenced List below contains 2 elements: Dim Countries = From c In List _ Select New With { .Country = c.Country, .CountryID = c.CountryID }开发者_如何学Python[详细]

2023-03-17 01:13 分类：问答
LINQ Query for filter by Selected Items in Checkbox List

Could not find this through Google or in SO questions... I have a checkbox listbox on my form. I want to filter my List by the list of selected Ids from that listbox that are checked, in SQL I would[详细]

2023-03-17 01:06 分类：问答
Return true or false based on whether there are duplicates

When I have duplicates in my collection, I want to return true, otherwise, I want to return false. I\'ve got the following linq query.[详细]

2023-03-17 00:19 分类：问答
At least one object must implement IComparable

var listair = empcon.OrderBy(x => x.CustomerConnection.OrderBy(y => y.Id)).ToList(); When I am using this statement then I am getting exception \"At least one object must implement IComparable[详细]

2023-03-14 23:27 分类：问答
Entity Framework 4 Unit of Work / Repository WITHOUT .Query() Lambda

We\'ve seen some very useful methods of implementing EF4 Repository and Unit of Work pattern (Reference 1, Reference 2)[详细]

2023-03-14 18:53 分类：问答
Selecting a left join default key with Linq (to SQL)

I have a minimal case as follows:- Table Posts PostID - PK PostDateTime Table LocalisedPosts PostID - JointPK[详细]

2023-03-14 18:27 分类：问答
How to convert data using lambda expression or using any other logic?

I have a DataTable which contains data in this format. I want to convert it to another format. What is the simplest way to achieve this? maybe using lambda expression. I am using[详细]

2023-03-13 09:41 分类：问答