C# merge two lists with return

Combine two lists c#

List<string> a = new List<string>();
List<string> b = new List<string>();

a.AddRange(b);

Source: stackoverflow.com

C# merge two lists

// Create your object
public class A { int Id { get; set; } A() { } A(int id) { Id = id;} }
public class B { int Id { get; set; } B() { } B(int id) { Id = id;} }

// Construct your lists
List<A> list = new List<A>() { new A( Id = 1 ), new A( Id = 2 ) };
List<B> list1 = new List<B>() { new B( Id = 3 ), new B( Id = 4 ) };

// Then create a linq query and convert the result to a list
List<object> all = (from x in list select (object)x).ToList();

// Now add the second list to the end of the last one
all.AddRange((from x in list1 select (object)x).ToList());

// You can use this new list to loop it like this
foreach (object item in all)
{
	// If you want to check which object we are looping you do this:
	bool obj1 = item is A;
	// Now you can cast the item to your object in a conditional operator
	Console.WriteLine(obj1 ? (item as A).Id : (item as B).Id);

	// Output:
	// 1
	// 2
  	// 3
  	// 4
}

C# merge two lists with return

var newList = a.Concat(b);

Source: stackoverflow.com

Similar codes

0 vote299 views1 answer
How to get total scenes unity
C#Unity
5 votes257 views4 answers
Linq foreach c#
C#
1 vote262 views1 answer
Get program path c#
C#
0 vote276 views1 answer
C# convert address to int
C#
1 vote273 views1 answer
Take screenshot in c#
C#
0 vote256 views1 answer
Forces the user to enter his password before submitting the form asp.net core
C#
0 vote311 views7 answers
C# USING SHARED CLASS
C#
3 votes255 views1 answer
Using variables from other procedures C#
C#
0 vote260 views1 answer
How to uncheck a radio button in c#
C#
0 vote269 views1 answer
C# linq aggregate string builder
C#