Write equivalent to the above codes in linq&lambda

Question

1.00/5 (2 votes)

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SQL

Select Top 10 Component, SUM([Down Time (Down day)])
from CMMS 
Where Unit = '{0}' 
and Section = '{1}' 
Group By Component 
Order By SUM([Down Time (Down day)]) DESC

hello dear all programming
how to write Equivalent to the above codes in linq&lambda?
please help me
regards yarian

What I have tried:

SQL

Select Top 10 Component, SUM([Down Time (Down day)])
from CMMS 
Where Unit = &#39;{0}&#39; 
and Section = &#39;{1}&#39; 
Group By Component 
Order By SUM([Down Time (Down day)]) DESC

hello dear all programming
how to write Equivalent to the above codes in linq&lambda?
please help me
regards yarian

Posted 13-Dec-16 20:00pm

misaqyrn9677

Updated 13-Dec-16 22:28pm

Ehsan Sajjad

v3

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Andy Lanng · Answer 1 · 2016-12-13T22:27:00

I should make you aware of apps like Linqer | SQL to LINQ converter[^] before I continue. These types of app translate sql to linq syntax.

Here's what I got for lamda:

C#

var results = db.CMMS
    .Where(c=>c.Unit == prop1 && c.Section == prop2)
    .GroupBy(c=>c.Component)
    .Select(g=>new {Component = g.Key, DownTime = g.Sum(c=>c.DownTimeDownDay})
    .Take(10)

Please note :
The var result is an ienumerable of an anonymous type
I assumed the property names as if you had used LinqToSql to link to the database

I hope that helps ^_^

Richard MacCutchan · Answer 2 · 2016-12-13T22:28:00

Solution 2

See LINQ: .NET Language Integrated Query[^] and Lambda Expressions (C# Programming Guide)[^].

Posted 13-Dec-16 22:28pm

Richard MacCutchan