C# binary file io tutorial

Write, FileShare. Write ; binaryWriter. Write "This is a string value. WriteLine exception. Open, FileAccess. Read, FileShare. ReadInt32 ; Console. ReadString ; Console. WritingFile ; demoObj. ReadingFile ; Console. In C , the BinaryWriter class is used to write primitive types as binary information to the stream. If the encoding is not defined, then the BinaryWriter class uses the default UTF-8 character encoding to write data to a binary file. An object of BinaryWriter can be created using the Stream object.

This is a guide to BinaryWriter in C. Here we discuss syntax and explanation, how does it works with examples to implement with proper codes and outputs. Close ; fileStream. Close ; System. BinaryWriter System. Create ; binWriter. Flush ; binWriter. Write stringbyte1 ; binWriter. Close ;. Ganesh Chavan Ganesh Chavan 47 1 1 silver badge 6 6 bronze badges. The only piece of this code that can be saved is perhaps System.

Can you describe what you're actually trying to do? Do you simply want to create a copy of a file? Or change some parts of the first, saving the result in the second? Something else? Why are you making this harder than just File. Copy srcPath, dstPath or at worst if you actually want to intercept or transform the data you copied : File. WriteAllBytes dstPath, File.

ReadAllBytes srcPath? Add a comment. Active Oldest Votes. I don't want to copy the file I want to write a binary data in another file Your code works well. NET framework provides a built-in method to copy a file: File. Open, FileAccess. You could use Encoding.

GetString to try to convert the bytes to characters. A sample program that does this:. You can use BinaryReader to read each of the bytes, then use BitConverter. ToString byte[] to find out how each is represented in binary. You can then use this representation and write it to a file. Generally, I don't really see a possible way to do this.

I've exhausted all of the options that the earlier comments gave you, and they don't seem to work. You could try this:. That's the save button. This works fine, but only shows the '! This cannot be run in DOS-Mode! How are we doing? Please help us improve Stack Overflow. Take our short survey. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How to read file binary in C? Ask Question. Asked 11 years, 10 months ago. Active 2 years, 4 months ago. Viewed k times. Boris Boris 9, 30 30 gold badges silver badges bronze badges. Your question is unclear. What exactly should the two files look like? I think he wants to store the bit pattern of a file into a text file. In other words, if you open the file in a text editor like Notepad, do you see zeros and ones?

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