C# .Concat()

The .Concat() method combines strings by appending one string to the end of another. This method is similar in function to using the + or += operator to concatenate strings, though the compiler handles those operators differently for optimization in certain scenarios.

Syntax

string.Concat(string1, string2, ...)

• string1, string2, ...: The strings that will be concatenated together.

Example

The following example uses the .Concat() method to combine three strings:

using System;

public class ConcatMethod
{
  public static void Main()
  {
    string firstString = "Hello";
    string secondString = "World!";
    string fullSentence = string.Concat(firstString, " ", secondString);
    Console.WriteLine(fullSentence);
  }
}

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This results in the following output:

Hello World!

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Codebyte Example

The below codebyte example demonstrates how .Concat() can be used with a foreach loop to iterate through a list and output multiple concatenated strings:

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