Properties/Settings.Designer.cs could not be opened

Problem: Properties/Settings.Designer.cs could not be opened
this is file created in properties folder by visual studio. If somehow it get deleted by asp.net developer. Visual studio throws error Properties/"Settings.Designer.cs" "could not be opened".

Solution: just create a new text file on the required locatin and rename it to "Settings.Designer.cs". compile in visual studio 2008/2010. it should show "Build succeeded".