share connectionstrings with multiple projects in same solution

I have multiple projects in the same solution. I would like them to share the same connectionStrings so that I don't have to change the this in multiple places. In my web configs I have ``` <connectionStrings configSource="bin/connectionStrings.config" /> ``` and then I have added a file as a link to my "connectionsStrings.config" which sits at the solution level. I have changed the properties so that the "Copy to Output Directory" is "Copy always" and the "Build Action" is "Content" But I get the following error: ``` The configSource attribute must be a relative physical path, so the '/' character is not allowed. ``` I am not sure how to get around this issue, any help would be great. Cheers