Converting VbSCript Simple Function (UCase,Left,Instr) to C# function

Question

I have got below function in VBSCript. How can this be writtern in C#.

Dim Title 'As String
Function getNavID(Title)
         getNavID=UCase(Left(Title, InStr(Title, ". ") -1))
End Function

Answer 1

public string getNavID(string Title)
{
    var index = Title.IndexOf(". ");
    return Title.Substring(0, index -1).ToUpper();
}