Using C# with LINQ, how can I merge two lists of different objects, say, Seminar and Conference? They have some common and some different fields/properties and do not share unique id.
class Seminar
{
int id,
DateTime joinDate,
string name
}
class Conference
{
Guid confNumber,
DateTime joinDate
Type type
}
I have a list of:
List<Seminar>
List<Conference>
I need to merge them into a super List
:
List<Object>
A code snippet would be great help.
If you just want a single List<object>
containing all objects from both lists, that's fairly simple:
List<object> objectList = seminarList.Cast<object>()
.Concat(conferenceList)
.ToList();
If that's not what you want, then you'll need to define what you mean by "merge".
Following code works fine for me, if this is your definition of Merge
One solution
List<A> someAs = new List<A>() { new A(), new A() };
List<B> someBs = new List<B>() { new B(), new B { something = new A() } };
List<Object> allS = (from x in someAs select (Object)x).ToList();
allS.AddRange((from x in someBs select (Object)x).ToList());
Where A and B are some classes as follows
class A
{
public string someAnotherThing { get; set; }
}
class B
{
public A something { get; set; }
}
Another Solution
List<A> someAs = new List<A>() { new A(), new A() };
List<B> someBs = new List<B>() { new B(), new B { something = string.Empty } };
List<Object> allS = (from x in someAs select (Object)new { someAnotherThing = x.someAnotherThing, something = string.Empty }).ToList();
allS.AddRange((from x in someBs select (Object)new { someAnotherThing = string.Empty, something = x.something}).ToList());
Where A and B are having class definition as
class A
{
public string someAnotherThing { get; set; }
}
class B
{
public string something { get; set; }
}
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