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LINQ Basic Tutorial

LINQ Generation Operator DefaultIfEmpty LINQ Equality Operator SequenceEqual

LINQ 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 method 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:

1 2 3 4 5 6

The Concat operator is not supported in C# or VB.Net query syntax.

LINQ Generation Operator DefaultIfEmpty LINQ Equality Operator SequenceEqual