How to add .dll file in asp.net?

I have a project where in i have implemente开发者_如何学Pythond the AutoSearch functionality using asp.net TextBox and AJAX AutoComplete extender. I also have some javascript written for AutoComplete extender. I want to make this file as a .dll file and use it in another projects. How should i make a .dll out of this project? Please help me to do this. Thank you.

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First create a Class Library of the part you want to reuse.

After that, simply go to your main project and add a reference to the class libary output (the dll file)