CODEWITHSUNDEEP
c#bytefilestream
lightwingduck
lightwingduck

Reputation: 73

How can I write a Integer to a FileStream in C#?

I was wondering if someone can help me solve a issue I have run into while playing with FileStreams. I have been trying to send an integer, 50, to a FileStream and write its value onto a File. However, it writes 2 to the file instead of 50. I know the ASCII representation of 50 is 2, so am not sure if this is part of the issue. If anyone has any pointers, I'd really appreciate it!

Here is my relevant code: From the main function:

string testMessage = "Testing writing some arbitrary string to a streama";
int tmL = testMessage.Length;
byte bb = Convert.ToByte(tmL);
SendByteStrem(bb);

And here is my streaming function:

public static void SendByteStrem(byte c){
    using (Stream ioStream = new FileStream(@"C:\Users\db0201\Desktop\stream.txt", FileMode.OpenOrCreate)){
          ioStream.WriteByte(c);
    }
 }

Upvotes: 2

Views: 4176

Answers (1)

TheGeneral
TheGeneral

Reputation: 81513

As you haven't explicitly stated your goal, i will answer the question for what it is.

The easiest way to write to a file would be to use File.WriteAllText which essentially opens a StreamWriter (which in-turn is open a FileStream) and calls Write

Creates a new file, write the contents to the file, and then closes the file. If the target file already exists, it is overwritten.

File.WriteAllText(fileName, "50")

or

var myInt = 50;
File.WriteAllText(fileName, myInt.ToString())

If you wanted to use the StreaWriter exclusively 

using (varwriter = new StreamWriter(fileName))  
    writer.Write(myInt.ToString());

If you wanted more configuration over the underlying FileStream 

using (var writer = new StreamWriter(new FileStream(fileName, FileMode.CreateNew)))  
   writer.Write(myInt.ToString());

if you just want to use a FileStream then things get a bit more manual as you will need to convert things to bytes

using (var stream = new FileStream(fileName, FileMode.CreateNew)) 
{
    var bytes = Encoding.UTF8.GetBytes(myInt.ToString());
    stream.Write(bytes, 0, bytes.Length);
}

Upvotes: 3

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