C# - Path to execution

Question

I am making a Auncher, however I would like to leave the files with a "fixed" path, the Auncher is in the same folder of the file to be started, but I do not know how I could create a "middle way", something like in html, that just put a piece of the way, if it is in the same folder, as is the case.

I’m using forms. NET 3.5.

The folders are like this:
folder x/folder Auncher/...
folder x/folder Prog/...

Answer 1

In C#, it is possible get path to the program executable to be executed.

string codeBase = Assembly.GetExecutingAssembly().CodeBase;
UriBuilder uri = new UriBuilder(codeBase);
string path = Uri.UnescapeDataString(uri.Path);

In which Assembly is in the namespace System.Reflection.

This gives us the path to the executable of Auncher. But this is not what is intended. If the Auncher is "C:/folder x/folder Launcher/Launcher.exe", we want to have the path to "C:/folder x/folder Prog/".

string codeBase = Assembly.GetExecutingAssembly().CodeBase;
UriBuilder uri = new UriBuilder(codeBase);
string launcherPath = Uri.UnescapeDataString(uri.Path); //launcher.exe
string launcherDir = Path.GetDirectoryName(launcherPath); //pasta launcher
string appDir = Path.GetDirectoryName(launcherDir); //pasta x
string programPath = Path.Combine(appDir, "pasta prog", "program.exe");

Path belongs to the namespace System.IO. With this code, we have the path to the program to run in the variable programPath.

But there is a simpler way to get relative paths. For this, let’s combine the methods Path.Combine and Path.GetFullPath.

        string codeBase = Assembly.GetExecutingAssembly().CodeBase;
        UriBuilder uri = new UriBuilder(codeBase);
        string launcherPath = Uri.UnescapeDataString(uri.Path);
        string programPath = Path.GetFullPath(Path.Combine(launcherPath, "../../pasta prog/program.exe"));

Answer 2

The name of this is not "fixed path" but yes "relative path"... but I think I understand what you mean, actually the string is that it’s fixed, representing a relative path. =)

I see no problem in using a relative path... just tested and works perfectly:

var proc = Process.Start(@"..\pasta prog\nomeDoPrograma.exe");

Attention when creating a shortcut for Auncher

Note that the relative path is solved in relation to the path indicated in Environment.CurrentDirectory. If you create a shortcut for Launcher, the property that indicates the start path will be passed to this environment variable . Net.