Read c# file

WriteAllText and File. WriteAllText writes the entire file at once. It takes two arguments, the path of the file and the text that has to be written. WriteAllLines writes a file one line at a time. It takes two arguments, the path of the file and the text that has to be written, which is a string array. There is another way to write to a file and that is by using a StreamWriter object. The StreamWriter also writes one line at a time. All of the above-mentioned ways to write to a text file are illustrated in the example code given below.

WriteLine File. Output: In case you want to add more text to an existing file without overwriting the data already stored in it, you can use the append methods provided by the File class of System. Skip to content. Change Language. Related Articles. Table of Contents.

Improve Article. Save Article. Like Article. Last Updated : 01 Apr, ReadAllText " ;. ReadAllText file ;. WriteLine str ;. WriteLine ;. ReadAllLines " ;. An implementation is free to return fewer bytes than requested even if the end of the stream has not been reached.

Use BinaryReader for reading primitive data types. Do not interrupt a thread that is performing a read operation. Although the application may appear to run successfully after the thread is unblocked, the interruption can decrease your application's performance and reliability. A region of memory. When this method returns, the contents of this region are replaced by the bytes read from the current file stream.

This can be less than the number of bytes allocated in the buffer if that many bytes are not currently available, or zero 0 if the end of the stream has been reached. Use the CanRead property to determine whether the current instance supports reading. Use the ReadAsync method to read asynchronously from the current stream.

This method reads a maximum of buffer. Length bytes from the current file stream and stores them in buffer. The current position within the file stream is advanced by the number of bytes read; however, if an exception occurs, the current position within the file stream remains unchanged. The method will block until at least one byte of data can be read, in the event that no data is available.

Read returns 0 only when there is no more data in the file stream and no more is expected such as a closed socket or end of file. The method is free to return fewer bytes than requested even if the end of the file stream has not been reached.

To test this code, find a text file or create one with some text in it on your machine and change the "textFile" variable to the full path of your. View All. Mahesh Chand Updated date Feb 04, One more way to read a text file is using a StreamReader class that implements a TextReader and reads characters from a byte stream in a particular encoding.

The complete code sample uses the above-discussed methods to read a text file and display its content to the console. Next Recommended Reading. Net Core 6. Create A.