/// <summary>
/// Expand <paramref name="exception"/> and inner exceptions to string.
/// </summary>
/// <param name="exception"></param>
/// <param name="format"></param>
/// <returns></returns>
public static string ExpandToString(this Exception exception, string format = null)
{
if (format.IsNullOrWhiteSpace())
{
format = new []
{
"{0}: {1}",
"Stack trace:",
"{2}",
}.Join(Environment.NewLine);
}
StringBuilder builder = exception
.Aggregate(new StringBuilder(), (sb, e) => sb.AppendFormat(format, e.GetType().FullName, e.Message, e.StackTrace));
return(builder.ToString());
}