How to Deserialize using binary Deserialization from file text file

Question

public static List<Restaurant> LoadRestaurantList() 
{
    FileStream fs = new FileStream("Restaurant.txt", FileMode.OpenOrCreate); 
    BinaryFormatter bf = new BinaryFormatter(); 
    List<Restaurant> rest =(List<Restaurant>)bf.Deserialize(fs); 
    fs.Close(); 
    return rest; 
}

I have Serailze the generic list which I have, into "Restaurant.txt" file.

now I want to Deserialize the same and return it into a Generic List, I have tried but its not working and it is giving error "Invalid Cast Expression".

This is the Serialization code:

public static void SaveRestaurantList(List<Restaurant> restaurantList) 
{ 
   FileStream fs = new FileStream("Restaurant.txt", FileMode.Create, FileAccess.Write);
   BinaryFormatter bf = new BinaryFormatter(); 
   for (int i = 0; i < restaurantList.Count; i++) 
   {  
        Restaurant r = new Restaurant(); 
        r = (Restaurant)restaurantList[i]; 
        bf.Serialize(fs, r); 
        fs.Flush(); 
   } 
   fs.Close(); 
}

Can anyone please help in solving out this.

public static void SaveRestaurantList(List<Restaurant> restaurantList) { FileStream fs = new FileStream("Restaurant.txt", FileMode.Create, FileAccess.Write); BinaryFormatter bf = new BinaryFormatter(); for (int i = 0; i < restaurantList.Count; i++) { Restaurant r = new Restaurant(); r = (Restaurant)restaurantList[i]; bf.Serialize(fs, r); fs.Flush(); } fs.Close(); } — Anjali D. Kapadni
– Anjali D. Kapadni, Commented May 6, 2014 at 16:06
Please add the above code to your question, not as a comment. No one can read that. — Mike Christensen
– Mike Christensen, Commented May 6, 2014 at 16:11

rene · Accepted Answer · 2014-05-06 16:57:41Z

1

Serialization and Deserialization are each others opposites. This means the type(s) used during serialization needs to be the same during deserialization.

In your code that is not the case. You serialize Restaurant types but when you deserialize you expect a List.

Adapt your serialization code as follows:

public static void SaveRestaurantList(List<Restaurant> restaurantList) 
{ 
   using(FileStream fs = new FileStream("Restaurant.txt", FileMode.Create, FileAccess.Write))
   {
       BinaryFormatter bf = new BinaryFormatter(); 
       bf.Serialize(fs, restaurantList); 
   }
}

answered May 6, 2014 at 16:57

rene

42.6k78 gold badges122 silver badges166 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Anjali D. Kapadni Over a year ago

how does this code stores the content in the form of List, so that I can use it while deserializing, can me explain me code little more.

Collectives™ on Stack Overflow

How to Deserialize using binary Deserialization from file text file

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related