How to get files from path

I am sharing today a method which can help you get files in a particular path.

static container findMatchingFiles(
        str _folderPath
    ,   str _filePattern   = '*.jpg*')
{
    System.IO.DirectoryInfo     directory;
    System.IO.FileInfo[]        files;
    System.IO.FileInfo          file;
    InteropPermission           permission;
    container                   fileTypes;
    Counter                     counter = 1;

    str         fileName;
    counter     filesCount;
    counter     loop;
    container   mathchingFiles;
    ;

    permission  = new InteropPermission(InteropKind::ClrInterop);
    permission.assert();

    directory   = new System.IO.DirectoryInfo(_folderPath);

    files       = directory.GetFiles(_filePattern);
    filesCount  = files.get_Length();

    fileTypes   = ['*.bmp*','*.jpeg*','*.gif*','*.jpg*','*.png*'];
    while(filesCount == 0 &&  counter <= conLen(fileTypes))
    {
        _filePattern = conPeek(fileTypes,counter);
        files       = directory.GetFiles(_filePattern);
        filesCount  = files.get_Length();
        counter++;
    }


    for (loop = 0; loop < filesCount; loop++)
    {
        file            = files.GetValue(loop);
        fileName        = file.get_FullName();
        mathchingFiles  = conins(mathchingFiles, conlen(mathchingFiles) + 1, fileName);
    }

    CodeAccessPermission::revertAssert();

    return mathchingFiles;
}