FileNotFoundException with the SPSite constructor

Question

I try to instantiate an instance of SPSite on the farm server in a custom process (MyApp.exe) and I give it as parameter the whole URI (http://mysite:80/). I also made sure that the account running MyApp.exe is Site Collection Administrator.

However, I can't make an instance of SPSite whatever I am trying to do. It always throws a FileNotFoundException.

Anyone got an idea?

StackTrace:

at Microsoft.SharePoint.SPSite..ctor(SPFarm farm, Uri requestUri, Boolean contextSite, SPUserToken userToken)
at Microsoft.SharePoint.SPSite..ctor(String requestUrl) at MyCompanyName.Service.HelperClass.GetItemStateInSharePoint(SharePointItem item) in C:\Workspaces\MyCompanyName\Development\Main\MyCompanyName.SharePoint\Service\HelperClass.cs:line 555

Another side note... I have a Web Application + Site collection that I can access through the browser without any problem.

Answer 1

The FileNotFoundException is thrown by SharePoint when it cannot find the requested site collection in the SharePoint configuration database. My guess is that you have not yet created a site collection on the URL http://mysite:80. I see the following stack trace if I try and instantiate a new SPSite object with the URL of a non-existing site collection:

System.IO.FileNotFoundException : The site http://server/sites/bah could not be found in the Web application SPWebApplication 
Name=SharePoint - 80 Parent=SPWebService.
at Microsoft.SharePoint.SPSite..ctor(SPFarm farm, Uri requestUri, Boolean contextSite, SPUserToken userToken)
at Microsoft.SharePoint.SPSite..ctor(String requestUrl)

Specify the proper URL of your site collection or open Central Administration and create a new Site Collection.

Answer 2

Changing the platform target in the build properties to x64 solved this issue for me on SharePoint 2010.