title: how to make solution visible in solution explorer window of visual studio 2010 or visual studio 2012?
body: <p>i am using visual studio2010. i am facing a problem that when i create a new web project then visual studio makes project and don't show its solution in solution explorer.
  And the other thing is that i want to add a project with my existing web project how i can add it with this one, i just know to add another project by its solution right click. first please tell me how i can make solution visible for my existing projects that i made before and for other projects that i will create. <img src="https://i.stack.imgur.com/x0VIt.png" alt="here i attach an image when i create a new project and i an example for another project where solution has shown"></p>