C# Strings

Interpolation and string methods.

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Interpolation: $"Hello {name}"; format with {price:N2}.
Length, ToUpper(), ToLower(), Trim()
Contains(), IndexOf(), StartsWith()
Substring(), Replace(), Split(), string.Join()
Verbatim strings @"C:\path" ignore escape sequences.

Key Takeaways: C# Strings

Mastering C# Strings helps you write clean and reliable C# code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

C# Strings Code Example

string s = "  Learn C# at CodesInTech  ".Trim();

Console.WriteLine(s.Length);
Console.WriteLine(s.ToUpper());
Console.WriteLine(s.Substring(6, 2));
Console.WriteLine(s.Contains("Codes"));
Console.WriteLine(s.Replace("C#", ".NET"));
Console.WriteLine(string.Join("|", s.Split(' ')));

decimal fee = 25000m;
Console.WriteLine($"Fee: Rs {fee:N0}");
Console.WriteLine(@"C:\Users\Ali");

Output

23
LEARN C# AT CODESINTECH
C#
True
Learn .NET at CodesInTech
Learn|C#|at|CodesInTech
Fee: Rs 25,000
C:\Users\Ali

Run this example on your own computer. The "Get Started" lesson shows how to set it up.

C# Strings Practice Exercises

Check what you learned in “C# Strings”.

/ 2 solved

Fill in the blank

Use string interpolation.

string msg = "Hello {name}";

✓ Correct! Not quite. Try again.

Multiple choice

What is @"C:\Users" called?

A verbatim string A template string A char array A regex

✓ Correct! Not quite. Try again.

to save your exercise progress.

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C# Strings

💡 Key Takeaways: C# Strings

C# Strings Code Example

C# Strings Practice Exercises

Key Takeaways: C# Strings