It is exactly the same:
DateTime^ dt = DateTime::Now;
label1->Text= dt->ToString("ddd/MMMM/yy, hh:mm:ss tt");
or with your requested output:
label1->Text= dt->ToString("dd/MM/yy, hh:mm:ss tt", DateTimeFormatInfo::InvariantInfo);
And here is the documentation for DateTime.ToString for C++:
http://msdn.microsoft.com/en-us/library/zdtaw1bw%28v=vs.80%29.aspx#Y1026[
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