public static class ExceptionExtensions
{
    public static String ToFullStackTrace(this Exception ex, Int32 count)
    {
        if (ex == null)
            throw new ArgumentException();
        StringBuilder sb = new StringBuilder();
        sb.Append(ex.StackTrace);

        int innerReferences = 0;
        Exception inner = ex.InnerException;
        while (inner != null && innerReferences < count)
        {
            sb.Insert(0, inner.StackTrace);
            inner = inner.InnerException;
            innerReferences++;
        }
        return sb.ToString();
    }
    public static String ToFullStackTrace(this Exception ex)
    {
        return ex.ToFullStackTrace(50);
    }
}