In this article I am going to explain my An Open Source Project: R-OnLine File Management System.
In R-OnLine File
Management System user can View, Upload, Comment, Manage Files & a lot
more...
Below is the DFD of my
project:

Image 1.
Here is this project I
am using SQL server as Data Base. Below is my table details:
1.
tbl_User

Image 2.
2.
ManageFile

Image 3.
3.
FileComment

Image 4.
Now I am going to explain my project page by page:
Launch the application: Login.aspx
Here I have 2 types of user in my project.
1.
User
2.
Admin
Here I login as admin user. You can see User_Type
column in tbl_user Data table to identify user type.

Image 5.

Image 6.
Click on Admin Link.
From Here Admin can manage user and Files.

Image 7.
Click on Manage Users
link.-> From here admin can view all users list, add new user, Delete any
existing user.

Image 8.
Now In ADMIN->
Manage Files Page.

Image 9.
Now Login As Simple
User:

Image 10.

Image 11.
Now Click Here Manage
Files. (Upload, View your Files, View All Files, Get File Details, Download,
Delete own uploaded file from here.)

Image 12.
Now Click on View.

Image 13.
From this screen user
can view File Details, post file comment, open file, download file and do a lot
more…
Below is my Data Base
diagram structure:

Image 14.
On the base of Data in
tbl_user table I am identifying whether login user is ADMIN or Simple user. See
below Data.

Image 15.
I have copied DB in
App_Data Folder..

Image 16.