Question

I have the following code snippet

        string[] lines = objects.Split(new string[] { "\r\n", "\n" }, StringSplitOptions.None);  
        //convert the array into a list for easier comparison
        List<string> StringtoList = lines.OfType<string>().ToList();

        //get the database list here
        List<string> sensitiveApps = testConnection.SelectSensitive();

        //compare the 2 lists to get the difference
        List<string> except = sensitiveApps.Except(StringtoList,StringComparer.OrdinalIgnoreCase);

However, I keep getting the above error, could anyone point me in the right direction?

Answer 1

I’m guessing the last line is throwing an exception. Try changing:

List<string> except = sensitiveApps.Except(StringtoList,StringComparer.OrdinalIgnoreCase);

to:

List<string> except = sensitiveApps.Except(StringtoList,StringComparer.OrdinalIgnoreCase).ToList();

This exception is occurring as Except will be returning an IEnumerable<string>.