Why is it a bad practice to use iteration variables in lambda expressions?

Which of the following code samples will check if a file is in use?

Which of the following statements is true regarding the code samples below? try {   // code goes here } catch (Exception e) {   throw e; } B: try {   // code goes here } catch (Exception e) {  throw;}

Which of the following is the correct way to implement deep copying of an object in C#?

What will be the output of the following Main program in a C# console application (Assume required namespaces are included)? static void Main(string[] args) { string Invalid = '$am$it$'; string sResult = Invalid.Trim(new char[]{'$'}); Console.WriteLine(sResult); Console.ReadLine(); }

Which of the following is the correct way to perform a LINQ query on a DataTable object?

You have a class that implements two interfaces that both have a method with the same name. Interface IA should be the default implementation. Interface IB should be used only in special situations. How do you implement those interfaces?

You can create your own implicit and explicit user-defined conversions.

Which namespace is required to use Generic List?

Which option is an Reference type?

What will be the output of the following code ? void Main() { int? x = null; int y = x ?? -1; Console.WriteLine(y); }