C# read whole file into string

Here's the MSDN documentation. Take a look at the File. ReadAllText method. This method opens a file, reads each line of the file, and then adds each line as an element of a string. It then closes the file. This method attempts to automatically detect the encoding of a file based on the presence of byte order marks. Use the ReadAllText String, Encoding method overload when reading files that might contain imported text, because unrecognized characters may not be read correctly.

For the noobs out there who find this stuff fun and interesting, the fastest way to read an entire file into a string in most cases according to these benchmarks is by the following:. Put up against several other techniques , it won out most of the time, including against the BufferedReader. The File class also offers the ReadAllText method which reads all the text in the file in one go.

The following code example uses ReadAllText method to read all the text in the file in one operation and returns a string. To read the file line by line, split the string. C - Functions - A function is a group of statements that together perform a task.

Every C program has at least one function, which is main, and all the most trivial programs. The coulomb is named after Charles-Augustin de Coulomb. ReadToEnd ;. Maxim V. Pavlov Maxim V. Pavlov 9, 14 14 gold badges 68 68 silver badges bronze badges. Cris sorry. StreamReader VB. Close FileStream VB. Read b, 0, b. GetString b, 0, b. Length Loop fs.

Close Result FileStream is obviously faster in this test. Recommendations Depending on what the application needs to do with a section of data, there may be additional parsing that will require additional processing time. FileStream is the better mechanism for speed but will take more logic. Baby Groot 4, 39 39 gold badges 52 52 silver badges 69 69 bronze badges. MinhVuong MinhVuong 41 4 4 bronze badges. But what about StreamReader. ReadAllText Path. Combine System. Deeps Deeps 1 1 gold badge 4 4 silver badges 16 16 bronze badges.

ReadAllText path ;. Davide Piras Davide Piras ReadToEnd ; Console. WriteLine "The file could not be read:" ; Console. WriteLine e. Erwin Draconis Erwin Draconis 8 8 silver badges 19 19 bronze badges. Paul Mitchell Paul Mitchell 3, 18 18 silver badges 21 21 bronze badges. Open file, FileMode. Amit Kumawat Amit Kumawat 5 5 silver badges 11 11 bronze badges.

Hatitye Chindove Hatitye Chindove 11 1 1 bronze badge. The Overflow Blog. Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses. Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. The following code gets a StreamReader instance using the File. OpenText method and then uses the ReadToEnd method to read all the way to the end of a file in a single operation. Since the StreamReader object is declared and instantiated in a using statement, the Dispose method is automatically invoked to flush and closes the stream.

ReadToEnd ; Console. OpenText method opens an existing UTF-8 encoded text file for reading. To open a file with some other character encoding, use the StreamReader class constructor, which optionally takes a specific character encoding. Download Run Code.

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