Insert a file in TextBox in C#

I have an "Agree And Conditions file ( rtf document )" and/or a "disclaimer file" to add to a textBox or Text Area that I would like to add to my MVC3 web app. I don't know how to do that. I ha开发者_如何学Pythonve google searched but without any success.

you should avoid text boxes and just show the content in a <div> with a fixed height and vertical scroll.

Then just add a <input type="checkbox"> to force the user say it agreed with the statement.

You can always have that checkbox that could be disabled while the user did not scroll down the div... I don't like it but it appears over and over in several websites.