There's no equivalent, C# doesn't have "built in" classes the same way
VB.NET does. You can, however, reference Microsoft.VisualBasic.dll
from C# and use the ControlChars class that way if you really want.
But in C# you usually use character escape sequences instead. For
example "Foo" & ControlChars.Tab & "Bar" in VB.NET can be written as
"Foo\tBar" in C#.
