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Concatenation in LINQ

Posted By:Akhil Raj       Posted Date: January 16, 2014    Points: 25    Category: LINQ    URL: http://www.dotnetspark.com  

If you have one object with properties. The object contains another object means the first object contains multiple entries of second object. But when i show the data, i need to concatenate the second object as comma separated value
 

In the classes the p3 property of Class1 needs to be concatenate to show the value.  Let us assume i have List<Class1> named class1List.
public class Class1
{
 public string p1 {get; set; }

 public int p2 {get; set;}
 
 public List<Class2> p3 { get; set;}
}

public class Class2
{
  public string p1 {get; set; }
}


from A in class1List select new { A.p1, A.p2, p3 = (A.p3!= null && A.p3.Count > 0 ? String.Join(", ", from item in A.p3 select item.p1) : string.Empty) };


     

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