Get data from ienumerable inside ienumerable using linq

Question

1.00/5 (1 vote)

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I have list of data.

C#

class Student
{
public string class{get;set;}
public Enumerable<book> subjects{get;set;}
}

class Book{
public string language{get;set;}
public string science{get;set;}
}

I have Enumerable<students> list. i want to get class names where language name is English using C# or easiest way.

What I have tried:

C#

var lang= students.Select(i => new { i.class, i.subjects}).Select(j => j.subjects.Where(k => k.language.ToLower() == "english".ToLower()));

Posted 5-Oct-17 7:18am

Raj kumar.C

Updated 5-Oct-17 19:48pm

User 4180254

v2

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[no name] 5-Oct-17 14:00pm

You need to change the name of "class" to "classroom" variable declared in Student class. You cannot use class as its reserved keyword here.

1 solution

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GKP1992 · Accepted Answer · 2017-10-05T19:48:00

Solution 1

After correcting the problem mentioned in Vinod Jangle's comment, try this

//returns students having a specific language book
    var langStudents = students.Where(s => s.subjects.Any(x => s.Language.ToLower() == 
                       lang));
    return langStudents;
}

Posted 5-Oct-17 19:48pm

GKP1992

Updated 5-Oct-17 19:49pm

v2

Comments

Raj kumar.C 6-Oct-17 12:33pm

i want to get class name only not subjects

Raj kumar.C 6-Oct-17 12:33pm

anyway Thanks for your answer