I'd like to show the date/time, two hours after the current time.
DateTime value = DateTime.Now;
DateTime newvalue = value.AddHours(2);
label5.Text = ???
Something like this seems to be what you want:
label5.Text = DateTime.Now.AddHours(2).ToString("dd/MM/yyyyy hh:mm"); // or whatever format you like
I don't know what you want to do but you've already added 2 hours to newvalue. You just need to add it to the textbox now, using:
textBox_NameOfTextBox.Text = newvalue.ToString();
label5.Text = newvalue.ToString("yyyy-MM-dd HH:mm");
yes, add date format.