VS Add-in to open a solution

I am writing Visual Studio 2010 add-in. Purpose of this add in is to s开发者_运维问答how all the VS solutions from a particular folder. We have around 100 solutions under our trunk folder. After add-in explore the folder and listed out solutions, developer would click any one of those solution to open it in same VS window. I have already a created a windows form in C# to list the solutions. Now I need to write a code to open the selected solution into the same VS window. I am not expert in Add-in writing. Any help would be appreciated.

Take a look at the Solution Load Manager extension. Source code available here.