2 replies to this topic

[Jeeves]

I suck at C#.

I am trying to retrieve a directory from the registry using C#. The key (in my instance) returns:

"\"c:\\program files (x86)\\steam\\steamapps\\common\\left 4 dead 2 demo\\left4dead2.exe\" \"%1\""

Question is, how do I turn that into just the usable directory ("...\left 4 dead 2 demo\") so I can try to tie it into other strings ("...\left 4 dead 2 demo\steam_appid.txt", etc.)

// Retrieve L4D2 directory
string L4D2Dir = Registry.GetValue("HKEY_CLASSES_ROOT\\Applications\\left4dead2.exe\\shell\\open\\command", "", "\"c:\\program files\\steam\\steamapps\\common\\left 4 dead 2 demo\\left4dead2.exe\" \"%1\"").ToString();

Also; won't won't this work? I'm trying to write "If Steam.exe is not running, do thus"

Process[] pname = Process.GetProcessesByName("Steam.exe");
if (pname.Length == 0)
{
//code
}

[Bart]

Hmm, why would you get the result with escaping slashes? That's weird. Is that how it's actually in the registry or does .NET add that?
Anyway, you have to find some class they use to represent a files and directories (called File or Path or whatever). That one will probably provide reliable methods to dissect the path and get what you need.

[Jeeves]

Thanks 2play ^.^
Got it working with the following:

// Retrieve L4D2 directory
string RegDir = Registry.GetValue("HKEY_CLASSES_ROOT\\Applications\\left4dead2.exe\\shell\\open\\command", "", "\"c:\\program files\\steam\\steamapps\\common\\left 4 dead 2 demo\\left4dead2.exe\" \"%1\"").ToString();
int found = RegDir.IndexOf("left4dead2.exe");
RegDir = RegDir.Substring(1).Remove(found);
RegDir = RegDir;

string L4D2Dir = Path.GetDirectoryName(RegDir);

So cut off the opening "\ and ending the string where left4dead2.exe starts, you're left with a directory path.