for creating outlook calender

You did not say which language you are working in. However, I have provided some links to CodeProject articles for you to read.

Creating an Outlook Calendar using WPF (Part 1)[^]

MS Outlook style Calendar[^]

[EDIT]
Since you have now specified C# I can tell you that there is a built in Date Picker control, if that does not give you what you need you can extend it.
You can read this article:
Day, Week, and Month Calendar Controls[^]

You can also search CodeProject or the internet in general. Try this querry in Google:
site:codeproject.com C# outlook calender control