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How to write a binary file in C#

Posted by Mahesh Chand Articles | Files, Directory, IO July 12, 2012
How to write a binary file using C# and .NET.
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Writing Binary to a Stream

The Write overloaded method is used to write primitive data types to a stream. The Write method can write a Boolean, Byte, Char, Decimal, Double, and Integer data types. 

The following code snippet creates a BinaryWriter and writes string, Boolean, integer and double data types to the stream. 

string authorName = "Mahesh Chand";
int age = 30;
string bookTitle = "ADO.NET Programming using C#";
bool mvp = true;
double price = 54.99;

using (BinaryWriter binWriter =
    new BinaryWriter(File.Open(fileName, FileMode.Create)))
{
    // Write string 
    binWriter.Write(authorName);
    // Write string 
    // Write integer
    binWriter.Write(age);
    binWriter.Write(bookTitle);
    // Write boolean
    binWriter.Write(mvp);
    // Write double 
    binWriter.Write(price);
}              


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