User987 questions

• Reading only specific columns from a CSV file out of many
• For loop with 20 items skip each time
• C# / LINQ fastest way of comparing two lists and assigning value
• C# / .NET comparing two large lists and finding missing items from both list
• Combining PLINQ with Async method
• How does OnValidateIdentity ASP.NET Identity work
• C# Efficiently delete 50000 records in batches using SQLBulkCopy or equivalent library
• Copying to clipboard textbox value using jQuery/JavaScript
• Implementing role-based authorization using .NET MVC 5
• AuthenticationManager.SignIn() isn't present in AuthenticationManager class

User987 answers