C# write text file example

If the file is not created, it creates a new file. If the file is already created, it will overwrite the existing file. Once file writing is done, it closes the file. An exception occurs if the file is readonly, the file name is too long, or the disk is full.

Alternatively, you can also specify the Encoding. The following code snippet uses the File. WriteAllLines method to write an array of strings to a text file. You can direct hardcode it if you like. WriteLine readText ; The File. WriteAllText method writes a string to a file. The method takes an optional third parameter: the encoding. If it is not specified, UTF8 is set. WriteAllLines method creates a new file, writes one or more strings to the file, and then closes the file.

WriteAllBytes method creates a new file, writes the specified byte array to the file, and then closes the file. The StreamWriter's WriteLine method writes out a formatted string and a new line to the stream.

A line is written to the text file. It's useful when you want to write one character at a time. On the File menu, point to New , and then click Project.

This code creates a file that is named Test1. Open Test1. For all file manipulations, it's good programming practice to wrap the code inside a try-catch-finally block to handle errors and exceptions. Specifically, you may want to release handles to the file in the final block so that the file isn't locked indefinitely. Some possible errors include a file that doesn't exist, or a file that is already in use. Skip to main content. This browser is no longer supported.

Save a Text File C Example. Ecco Suprastyo Updated date Mar 04, This article about saving a text file C example using a System. We'll follow the steps to make it:. Create a new application project. Then the New Project window will appear. Write down the name of the project that will be created on a field Name.

Create a new windows form like below:. After you write down the program listings, press the F5 key to run the program and if you successfully, the result is:. Next Recommended Reading. Net Core 6. Create A.