Please anybody help me,
 how to handle multiple projects in a single application and
is there any way to directly run the child project without touching the main project? please help me.

advanced thanks to all.

Not sure what you mean when you say "run the child project".

Can you elaborate a little bit on your question?

In Visual Studio development, you have a solution which contains multiple projects. Usually, there is one "primary" project, although there is no setting per se for this. That project is the startup project and references other projects which contain support code the references can continue down the line until you finally have a project that does not reference another project. At that point you have all the projects you need withing a solution.

Do this help?

Hey,

Load the projects into the same solution, then setup the appropriate project to run by selecting it, right-click, and select "set as startup project".

Brian

thank you sir

sir, i want to run the child project directly with the accessing of session and application objects.every body first run the parent project and then run the appropriate child projects, that means
http://localhost/parent/chied1/form1.aspx
but i want to runt the child project directly, like this
http://localhost/chied1/form1.aspx
and I want the procedure for how to add the already developed project as a child project to some parent project.
Thanking you sir
RK

Let us clarify the discussion here... you are asking about parent and child web applications. "Projects" is a little misleading here.

You can create virtual directories in IIS just about anywhere you want. You can put one at the root of the server, or underneath another virtual directory. Multiple virtual directories can point to the same source code as well.
This should allow you achieve what you are describing.