如何用c#获取我电脑中exe的所有路径

Question

Yes there any way by which i can get the paths of exe? I mean suppose i have 20 exes in my local disk ci want to get the paths of the exe like "C:\\myexe.exe or it can be C:\\dir\\myexe.exe"

string getpathforexe[] = themethord;
foreach(string printvalue in getpathforexe)
{
     messagebox.show(printvalue.tostring());
}

so what will be themethord?

Answer 1

What you essentially need is a safe, recursive, .exe search functions on a root folder, and you can apply it anywhere.

Something like this:

public static List<string> GetAllAccessibleFiles(string path, string searchPattern) {
    List<string> dirPathList = new List<string>();
    try {
        string[] childFilePaths = Directory.GetFiles(path, searchPattern, SearchOption.TopDirectoryOnly);
        dirPathList.AddRange(childFilePaths);
        foreach (string childDirPath in Directory.GetDirectories(path)) { //foreach child directory, do recursive search
            List<string> grandChildDirPath = GetAllAccessibleFiles(childDirPath, searchPattern);
            if (grandChildDirPath != null && grandChildDirPath.Count > 0) //this child directory has children and nothing has gone wrong
                dirPathList.AddRange(grandChildDirPath); //add the grandchildren to the list
        }
        return dirPathList; //return the whole list found at this level
    } catch (UnauthorizedAccessException ex){
        //Do something if necessary
        return null; //something has gone wrong, return null
    }
}

Be careful of a couple of things:

1. Not all directories are accessible. When you try to access an unaccessible directory, you would get UnauthorizedAccessException
2. By using recursive search, you want your search result to be failed only on the directory where you have no access right.

Nevertheless, if you apply this to all your folders, likely you will take very long time. It is best to apply it to particular folders which you want to search for .exe files.

Explanations:

In the function, given a path, if first lists the files in the directory top folder:

string[] childFilePaths = Directory.GetFiles(path, searchPattern, SearchOption.TopDirectoryOnly);
dirPathList.AddRange(childFilePaths);

If any of your files matches your search pattern, you add those files. Then next you check each folder consisted in your path directory:

foreach (string childDirPath in Directory.GetDirectories(path)) { //foreach child directory, do recursive search
    List<string> grandChildDirPath = GetAllAccessibleFiles(childDirPath, searchPattern);
    if (grandChildDirPath != null && grandChildDirPath.Count > 0) //this child directory has children and nothing has gone wrong
        dirPathList.AddRange(grandChildDirPath); //add the grandchildren to the list
}

If any of the directory consists of any child folders, do recursive search to the children directories, and add the results together in the dirPathList and finally returns it:

return dirPathList; //return the whole list found at this level

Then you could get all the files with ".exe" .

And in the catch, you probably want to check for the unauthorized access Exception:

catch (UnauthorizedAccessException ex){
    //Do something
    return null; //something has gone wrong, return null
}

You use it like this:

List<string> exefiles = YourClassNameWhoHasTheMethod.GetAllAccessibleFiles(testfolder, "*.exe"));

For example, you could test it with Recycle Bin like this:

string rbin = @"C:\$Recycle.Bin";
List<string> files = GetAllAccessibleFiles(rbin, "*.exe");

And these are what I get for the files:

C:\$Recycle.Bin\S-1-5-21-3161714743-1342575415-982792061-1001\$IYFMY6V.exe
C:\$Recycle.Bin\S-1-5-21-3161714743-1342575415-982792061-1001\$RYFMY6V.exe