Question

Why I’m getting:

Index and length must refer to a location within the string.
Parameter name: length

when I compile this code:
http://pastebin.com/CW4EcCM8

some part of it:

    public string findFileEnding(string file)
    {
        int index1 = file.IndexOf('.');
        file = file.Substring(index1, file.Length);
        return file;
    }

Thanks;)

Answer 1

I am thinking there is a chance Path.GetExtension could be something OP might want instead.

notice that it returns extension with . like .exe

http://msdn.microsoft.com/en-us/library/system.io.path.getextension.aspx