C#
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  1. How to check if a number is a power of 2 in C#?

  2. How to convert C# DateTime to “YYYYMMDDHHMMSS” format?

  3. How to create a folder if it does not exist in C#?

  4. How to validate whether a string is a number in C#?

  5. What is the difference between Func delegate and Action delegate in C#?

  6. How to convert byte array to an object stream in C#?

  7. How to verify an exception that has been thrown in unit testing C#?

  8. How to create a comma separated string from a list of string in C#?

  9. Why the error Collection was modified; enumeration operation may not execute occurs and how to handle it in C#?

  10. How to convert byte array to string in C#?

  11. How to fetch a property value dynamically in C#?

  12. How to delete all files and folders from a path in C#?

  13. What is the main difference between int.Parse() and Convert.ToInt32 in C#?

  14. How can we update the values of a collection using LINQ in C#?

  15. How to replace line breaks in a string in C#?

  16. How to find items in one list that are not in another list in C#?

  17. How to Copy the entire contents of a directory in C#?

  18. How can we return null from a generic method in C#?

  19. What is the use of yield return in C#?

  20. What is the difference between Last() and LastOrDefault() in Linq C#?
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