I deleted a database using the Window explorer. Then I ran Management Studio there was an entry for the disconnected Database I right clicked on the database and deleted the database from there too. It did without any problem. Now when I copy the database into the folder where I deleted the database before and I run the Management Studio, attached the database it was attached but the Icon of the database is gray and in brackets says(Read-Only).
1-Why Read-Only.
2-When I right click on the database the system gets hang and i am unable to anything.
3-What is the right way to attach the database?

I will be very thankful for you help:)