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Tag: linq

LINQ to NHIBERNATE – Did not implement method COS

In Linq to NHibernate, I am trying to return business users within a certain distance. This is what I have so far:

var query = from b in ActiveRecordLinq.AsQueryable()
where (3959 * Math.Aco

October 12, 2021By Simo Hibernate COS, Implementation, linq, method, NHIBERNATE, noLeave a Comment

LINQ table connection

SELECT (SELECT d.DeptName FROM Dept d WHERE d.Id=p.DeptId) DeptName, count( p.DeptId) AS Count FROM Person pGROUP BY p.DeptIdvar dept = (from p in db.Person group p by p.DeptId into g join d in db.

October 9, 2021By Simo Rom connection, linq, tableLeave a Comment

Is VB6 have a Linq expression?

I talked to a person about linq on a visual basis. He showed the linq expression in vb, but I can’t be sure whether it’s managed or non-managed (vb6) because I never Have used any of them.

Do

October 6, 2021By Simo Visual Basic expressions, linq, VB, VB6Leave a Comment

C # – linq to SQL is used to calculate and average a set of data (no group)

I want to execute a Linq to Sql statement that captures (filtered) counts and averages in the data set. My working principle, but in a query should be able to perform the database Two queries.

<

October 4, 2021By Simo C# average, C #, Calculation, data, for, linq, packet, set, SQLLeave a Comment

C # – Pass the LINQ expression as a string?

The following code works fine

using (var ctx = new MyEntities())
{ var devices = ctx.Devices
.Where(x=> x.Device == “TEST”)
.ToList();
return devices;
} What I want to do is to pass in t

October 4, 2021By Simo C# as a string, C #, Delivery, expression, linq, willLeave a Comment

LINQ – Enumerable.todictionary only retrieves what it needs?

I am using Enumerable.ToDictionary to create a Dictionary from linq call:

return (from term in dataContext.Terms< br /> where term.Name.StartsWith(text)
select term).ToDictionary(t => t.Term

October 2, 2021By Simo Search Engines Enumerable, Enumerable.todictionary, linq, need, retrieving, Things, TodictionaryLeave a Comment

ASP.NET: How to test linQ query

How to test a LINQ query, as follows:

var vUser = (from u in this.dbName.aspnet_Users< br /> where u.UserName.Equals(this.wCreateUser.UserName)
select u).Single(); I keep getting the null ex

September 29, 2021By Simo Asp ASP, ASP.NET, How to, linq, query, testLeave a Comment

.NET – LINQ with RX extension

I think LINQ query language is suitable for IObservable, just like IEnumerable using ReactiveExtensions. I have the following code

Public Sub Foo(source As IObservable(Of Tuple(Of Integer, In

August 22, 2021By Simo Visual Basic Extension, linq, RX, WithLeave a Comment

.NET – I can test the structure of Linq query in the case of unreal implementation

I heard that when testing EF, due to the differences between the LINQ to Objects and LINQ to Entities providers, you need to use integration tests for real-time DB.

Why can’t we unit test the

August 22, 2021By Simo Design Pattern construct, executed, in the case, linq, not practical, query, test, YesLeave a Comment

.NET – How to construct the performance of the LINQ expression?

Is there a difference in performance based on the position of the where clause in the linq expression?

Look at the following code:

dbContext.AnEntity.Include(“AnotherEntity”).Where(e =>

August 22, 2021By Simo Performance expression, How to construct, linq, performance, why notLeave a Comment
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