I am using dpkg --build <package name> in order to build packages. The packages are working properly with dpkg -I <package name>. In order to make them work with apt-get I need package_name.dsc file, which is not possible to get with dpkg --build command.
I do not know how to build packages with debuild or dpkg-buildpackage. Can any one tell is there any simple way to do this, as it *.dsc file is simple text file can I generate it by some other tool.
If you are looking to generate a .dsc package, you should be using the debuild -S command.
Assuming you are building packages on Ubuntu, you should consult this Ubuntu guide about packaging.
It will help you get started and point out how you can use other parameters of debuild to build a .dsc package among others.