CODEWITHSUNDEEP
c#
Moosa Raza
Moosa Raza

Reputation: 107

How to fix the "unable to read beyond the end of stream"-error?

I receive following error:

“unable to read beyond the end of stream”

I write the file like this:

FileStream path = new FileStream(@"C:\Users\Moosa Raza\Desktop\byte.txt", FileMode.CreateNew); 
BinaryWriter file = new BinaryWriter(path); 
int a = int.Parse(Console.ReadLine()); 
double b = double.Parse(Console.ReadLine()); 
string c = Console.ReadLine(); 

file.Write(b); 
file.Write(c); 
file.Write(a);

input is a = 12, b = 13 and c = raza

Then read it like this:

FileStream path = new FileStream(@"C:\Users\Computer\Desktop\byte.txt", FileMode.Open);
BinaryReader s = new BinaryReader(path);
int a = s.ReadInt32();
double b = s.ReadDouble();
string c = s.ReadString();
Console.WriteLine("int = {0} , double = {1} , string = {2}",a,b,c);
Console.ReadKey();

Upvotes: 0

Views: 9841

Answers (2)

Joseph Wu
Joseph Wu

Reputation: 5008

please try this. By using 'using' scope, it will close the file when you finish writing or reading it. Also the code will be a bit cleaner. 

        using (var sw = new StreamWriter(@"C:\Users\Computer\Desktop\byte.txt"))
        {
            sw.WriteLine(int.Parse(Console.ReadLine()));
            sw.WriteLine(double.Parse(Console.ReadLine()));
            sw.WriteLine(Console.ReadLine());
        }

        using (var sr = new StreamReader(@"C:\Users\Computer\Desktop\byte.txt"))
        {
           int a =  int.Parse(sr.ReadLine());
           double b =  double.Parse(sr.ReadLine());
           string c =  sr.ReadLine();
        }

Upvotes: 0

CodeCaster
CodeCaster

Reputation: 151594

You must read the file in the exact same order you write it. According to your comment, the order in which you write is: double, string, int.

The reading code however, reads in the order int, double, string.

This causes the reader to read the wrong bytes, and interpret a certain value as an incorrect string length, thereby trying to read beyond the end of the file.

Make sure you read in the same order as you write.

Upvotes: 1

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