C# String Concatenation Methods Explained

1 year ago
Benjamin Taylor
1 minute

There are multiple ways to concatenate strings in C#, with the most common methods being using the plus (+) operator, the String.Concat() method, the String.Format() method, and the StringBuilder class.

  1. You can use the plus (+) operator to concatenate two strings, for example:
string str1 = "Hello";
string str2 = "World";
string result = str1 + " " + str2;
  1. Utilize the String.Concat() method: The String.Concat() method can be used to combine multiple strings, for example:
string str1 = "Hello";
string str2 = "World";
string result = String.Concat(str1, " ", str2);
  1. Utilize the String.Format() method: The String.Format() method can be used for formatting strings and concatenation, for example:
string str1 = "Hello";
string str2 = "World";
string result = String.Format("{0} {1}", str1, str2);
  1. Using the StringBuilder class: StringBuilder class can efficiently concatenate strings, especially suitable for situations requiring frequent concatenation of large amounts of strings, such as:
StringBuilder sb = new StringBuilder();
sb.Append("Hello");
sb.Append(" ");
sb.Append("World");
string result = sb.ToString();

These methods can all be used for string concatenation, the specific choice depending on the code’s requirements and performance needs.

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