Klaus Gütter questions

Klaus Gütter answers

• Round number to next highest greatest place
• find the highest value that is less than a given number in a sorted list
• C# How to treat a string variable as interpolated string?
• How does Visual Studio syntax-highlight strings in the Regex constructor?
• C# 8 understanding await using syntax [duplicate]
• Count of duplicate items in a C# list
• Can this COM interface be implemented in C#?