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Video Description
Strings are everywhere in C#, but they have surprising behavior! Learn why strings are immutable and when to use StringBuilder.
What you'll learn:
- String immutability explained
- Common string operations (searching, modifying, formatting)
- String comparison the right way
- The concatenation performance problem
- StringBuilder to the rescue (250x faster!)
- String interpolation with $""
- Escape sequences and verbatim strings with @
- Performance implications and memory usage
WARNING: String concatenation in loops can literally freeze your application!
Performance comparison:
- 1000 concatenations: 15ms vs 0.1ms with StringBuilder
- Memory: 500KB vs 4KB
Saved from a string performance disaster? Like the video! Subscribe for if/else decision making coming next. Had string performance issues? Share your story below!
Chapters
- 0:00 Working with Strings in C#
- 0:01 www.benday.com
- 0:22 The String Paradox
- 0:39 String Basics
- 0:49 String Immutability
- 1:00 Common String Operations
- 1:36 String Comparison
- 1:46 The Concatenation Problem
- 1:57 StringBuilder to the Rescue
- 2:07 When to Use StringBuilder
- 2:26 String Interpolation Magic
- 2:37 StringReader and StringWriter
- 2:47 Escape Sequences and Verbatim Strings
- 2:58 Performance Numbers
- 3:22 Common String Mistakes
- 3:45 Key Takeaways
- 4:12 Next: Making Decisions with If/Else
Video Info
- Duration: 4:27
- Published: October 13, 2025
