Concatenation Operator: Concat
The Concat() method appends two sequences of the same type and returns a new sequence (collection).
Example: Concat in C#
IList<string> collection1 = new List<string>() { "One", "Two", "Three" };
IList<string> collection2 = new List<string>() { "Five", "Six"};
var collection3 = collection1.Concat(collection2);
foreach (string str in collection3)
Console.WriteLine(str);Output:
One Two
Three
Five
Six
Example: Concat in C#
IList<int> collection1 = new List<int>() { 1, 2, 3 };
IList<int> collection2 = new List<int>() { 4, 5, 6 };
var collection3 = collection1.Concat(collection2);
foreach (int i in collection3)
Console.WriteLine(i);Output:
12
3
4
5
6
Concat operator is not supported in query syntax in C# or VB.Net.