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How do I write a data file in C#?
I have figured out how to read/write a text file in C# but if I wanted to wright ints or doubles, I would have to use a data file.
in java I would use DataInputStream/ DataOutputStream to write data to a file.
1 Answer
- 1 decade agoFavorite Answer
If you want to write straight primitive data types out to files in binary you can use BinaryReader and BinaryWriter.
FileStream fs = File.Create("C:\\test.dat");
BinaryWriter br = new BinaryWriter(fs);
double dblToWrite = 14.3;
br.Write(dblToWrite);
br.Close()
And then when you want to read your value back in, you would do this:
FileStream fs = File.Open("C:\\test.dat", FileMode.Open);
BinaryReader bRead = new BinaryReader(fs);
double dblReadFromFile = bRead.ReadDouble();
bRead.Close();