DebuggingExtensions.cs

public static class DebuggingExtensions
{
    public static string ToStringAutomatic<T>(this T obj)
    {
        const string Seperator = ", ";
        const BindingFlags BindingFlags = BindingFlags.Instance | BindingFlags.Public;

        var objProperties = 
            from property in obj.GetType().GetProperties(BindingFlags)
            where property.CanRead
            select string.Format("{0} : {1}", property.Name, property.GetValue(obj, null));

        return string.Join(Seperator, objProperties);
    }
}