linq-to-entities

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checking null condition with linq to entites using multiple joins

I have query like this ...below... I want to check the null condition ... if lastname(entered name) is empty dont check this condition ...[详细]

2023-04-05 15:08 分类：问答
Different C# apps accessing database through Linq to Entities

I have a C# console application which does some processing and then writes to the database. I have it deployed multiple times on a server with different config settings to do slightly different things[详细]

2023-04-05 14:20 分类：问答
Linq query with inner join, multiple group by and min max

I\'m trying to convert the following query to linq. SELECTClient.Nom, Client.Prenom AS Prénom, Client.Structure, MIN(Meeting.Start) AS Début, MAX(Meeting.Start) AS Fin, Meeting.Dispositifs AS Dispo[详细]

2023-04-05 13:33 分类：问答
Is It Possible to do this T-SQL Query with LINQ (to Entities)

I\'m trying to write the following LINQ-Entities query: Get a list of Questions, that have been开发者_C百科 answered, ordered by most recently answered[详细]

2023-04-05 12:30 分类：问答
LINQ to JSON: how to get the right format?

im trying to convert my result from a linq query to json using json.net here is what i did: JObject o = JObject.FromObject(new[详细]

2023-04-05 06:49 分类：问答
Nullreference excpetion was unhandled (Object reference not set to an instance of an object)

I have a form with four combobxes say cbmefrom(age from ) cbmeto( age to)cbperiod(periodtype values liek this\"Next 7 Days\" ......) and cbgender(cbgender)..[详细]

2023-04-04 23:29 分类：问答
Pivoting in Linq [duplicate]

This question already has answers here: Pivot data using LINQ (5 answers) Closed 9 years ago. I am using LINQ-to-Entities, and would like to perform a pivot.[详细]

2023-04-04 18:53 分类：问答
Inserting NULL into DataTable

Morning (in RSA at least), I\'m trying to create a data driven menu, using data from a self-referencing table to create a (2-level) hierarchical structure. Example Data is:[详细]

2023-04-04 14:27 分类：问答
Dictionary which doesn't create key if there are no values

I have two types User and Area. public class User : IEntity { public int UserId { get; set; } public string Username { get; set; }[详细]

2023-04-04 12:13 分类：问答
how can i get the membership sold count

Hi I开发者_StackOverflow中文版 have a table called membertomship with columns... memberToMship_Id[详细]

2023-04-04 10:52 分类：问答