/TypeScript/C# merge two lists different types

C# merge two lists different types

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 different types

// 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
}

Source: stackoverflow.com

Similar codes

0 vote115 views1 answer
Nested slots in vue
TypeScript
2 votes61 views1 answer
Visual Studio Code Typescript region folding
TypeScript
0 vote106 views1 answer
Omgsmhwthwhyomgnvm
TypeScript
0 vote130 views1 answer
In order to allow non-dict objects to be serialized set the safe parameter to False.
TypeScript
1 vote103 views2 answers
.env typescript
TypeScript
0 vote124 views1 answer
Angular typescript filter array group by attribute
TypeScript
7 votes118 views2 answers
Remote events roblox
TypeScript
-1 vote114 views1 answer
Where to put toaster on http service calls typescript
TypeScript
10 votes110 views3 answers
Addeventlistener with arguments in angular 8
TypeScript
0 vote152 views1 answer
Import lodash issue angular
TypeScript