Regular vs. Verbatim Strings in C#: When Should I Use @ Strings?

Difference between ordinary strings and verbatim strings in C#: When to use @ string?

ReSharper often recommends converting normal strings to verbatim strings in order to optimize code. To fully understand this advice, it's important to understand the key differences between these two string types.

Common string

Ordinary strings are the most common string type in programming. They can be defined using single or double quotes and are allowed to contain escape characters such as "n" and "t" to represent a newline or tab character respectively.

Verbatim string

Verbatim strings are represented by the "@" symbol before open quotes, they retain the original format without interpreting escape characters. This feature is particularly useful when working with file paths or complex strings containing special characters that might otherwise need to be escaped.

For example, a normal string representing the file path "C:myfoldermyfile.txt" needs to use an escape character for the backslash, which is written as "string myFileName = "C:myfoldermyfile.txt";".

Use verbatim strings without escaping, making the code more readable and less error-prone: "string myFileName = @"C:myfoldermyfile.txt";".

Advantages of verbatim strings

• Clearer and more intuitive representation of complex strings
• Eliminates the need for escaping special characters, reducing potential errors
• Guaranteed to preserve spaces and newlines as-is

ReSharper’s suggestions

Based on these advantages, ReSharper recommends using verbatim strings in scenarios where readability and accuracy are critical. This is especially beneficial in scenarios where paths, connection strings, and other special characters play an important role.

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