C# to ASP.NET MVC FileStream Crossover [duplicate]

Question

I have written code in C# and printed results to the terminal to confirm it is working. I am currently in the process of transferring some of the code over to an MVC 4 Controller and I have been able to successively merge most of it but I am having issues with one part.

I wish to read a database file (database.dat) and later on I wish to write to the same file.

In my controller I have:

using (FileStream stream = File.OpenRead("database.dat")) database = (List)formatter.Deserialize(stream);

and

using (Stream stream = File.Open("database.dat", FileMode.Create)) formatter.Serialize(stream, database);

In both cases 'File' in File.OpenRead and File.Open is underlined and I receive the error:

'System.Web.Mvc.Controller.File(byte[], string)' is a 'method', which is not valid in the given context ..."

Is there way I can achieve the same result in MVC?

Answer 1

You'll have to add the fully-qualified name if you want to use the File class in System.IO (http://msdn.microsoft.com/en-us/library/system.io.file.aspx). So something like this should work:

using (FileStream stream = System.IO.File.OpenRead("database.dat")){
    database = (List)formatter.Deserialize(stream);
}