How can I remove a last part of a string with an unknown int?

Question

So, I'm making a file transfer program from one PC in my house to the other. The client can look through the server's files and take what it wants. (Makes it very easy for moving projects/documents/music). This is an example of what a string of a file looks like:

New Text Document.txt : "(FILE)-(" + f.Length + " Bytes)"

My problem is removing : "(FILE)-(" + f.Length + " Bytes)". How can I remove JUST that part from the string? Where the f.Length is unknown... Thanks!

Answer 1

Just as an alternative to the regex answers, one option is to use LastIndexOf to find the last occurence of a known part of the string (eg (FILE) ).

var oldString = "ThisIsAString (FILE)-(1234 Bytes";
int indexToRemoveTo = oldString.LastIndexOf("(FILE)");

// Get all the characters from the start of the string to "(FILE)"
var newString = oldString.Substring(0, indexToRemoveTo);

Answer 2

I hope I've got what you want

string contents = "some text (FILE)-(5435 Bytes)  another text";

string result = Regex.Replace(contents, @"\(FILE\)-\(\d+ Bytes\)", "");

Console.WriteLine (result);

Prints:

some text   another text

Solution to remove everything after .txt

string contents = "some text .txt (FILE)-(5435 Bytes)  another text";
string lastSegment = ".txt";
var result = contents.Substring(0, contents.IndexOf(lastSegment) + lastSegment.Length);
Console.WriteLine (result);

prints some text .txt

Answer 3

var match = Regex.Match(pattern: @"\((.*)\)-\(\d+ Bytes\)$", input: name);
if(match.Success)
{
    string fileName = match.Groups[1].Value;
}