Fabjan questions

Fabjan answers

• Use using to dispose resources
• Extend "object" with a null check more readable than ReferenceEquals
• Searching in text files until specific string
• Image Saving issue from Windows application c#
• Copy a dictionary with int List <int, List<int>> by value
• Can't convert DateTime to string
• Extract list where string is contained inside a list inside the list
• Create a list of objects with initialized properties from a string with infos
• What does 'Classname<T> where T: Classname<T>' do?
• Are arithmetic operations on literals in C# evaluated at compile time?