Finds all images in a directory with fileSize>=minSize

 public static void FindImagesWithSetSize(string directoryInput, string directoryOutput, long minimumFileSize) //FileSize is in Bytes.
{
    List<string> outputPaths = new List<string>();
    foreach (string path in Directory.GetFiles(directoryInput))
    {
        long length = new FileInfo(path).Length;
        if (length >= minimumFileSize) //Finds all valid files
            outputPaths.Add(path);
    }

    foreach (string path in outputPaths)
    {
        string outputFile = path.Replace(directoryInput, directoryOutput);
        try
        {
            File.Copy(path, outputFile); //Copies all the valid files to new directory.
        }
        catch
        {
            Console.Error.WriteLine($"{outputFile} with the same name already exists in the output directory");
        }
    }
}

/* Anyone is free to use this code*/