![]() ![]() Work on a new live-action Star Wars television series was announced in November 2017. The season was produced by Lucasfilm, Fairview Entertainment, and Golem Creations, with Jon Favreau serving as showrunner. It is part of the Star Wars franchise, set five years after the events of Return of the Jedi (1983). Here we discuss the Introduction and how does TextReader works in C# along with examples and code implementation.The first season of the American television series The Mandalorian stars Pedro Pascal as the title character, a lone bounty hunter hired to retrieve " The Child". StreamReader and StringReader are two derived classes of TextReader with the help of which we can implement the methods of TextReader to read content from the text files.TextReader is an abstract class that is used to read text or sequential series of characters from a text file.Using (TextWriter textWriter = File.CreateText(fileToWrite)) checking if the file to write content already exists While ((str = textReader.ReadLine()) != null) Using (TextReader textReader = File.OpenText(fileToRead)) String fileToRead = content = new StringBuilder() Reading the content of a text file using TextReader and writing it to another file. Using (TextReader tr = File.OpenText(file)) Opening a text file and reading the whole content Reading the whole content of a text file using the ReadToEnd() method of TextReader. String file = the text file and reading 5 characters Reading five characters from a file using the ReadBlock() method of TextReader. Using (TextReader textReader = File.OpenText(file))Ĭonsole.WriteLine(textReader.ReadLine()) Ĭonsole.WriteLine("File does not exist!") String file = opening the text file and reading a line Reading a line of a file using the ReadLine() method of TextReader. We can pass a text file name in a TextReader constructor to create an object. Following are the different examples of TextReader in C#. It is used to read all characters from the current position to the end of the text reader and it returns them as one string. It is used to read a line of characters from the text reader and it also returns the data as a string. It is used to read the next character from the text reader and it also advances the character position by one character. It is used to read the next character without changing the state of the reader and it returns the next available character without actually reading it from the reader. It is used to release all the resources used by an object of TextReader. It is used to close the TextReader and to release any system resources associated with it. ![]() Please find some important methods of TextReader in the following table: Method StringReader: It is used to read text from a string.StreamReader: It is used to read characters from a byte stream in a particular encoding.We can work with TextReader with the help of its two derived classes i.e. Its inheritance hierarchy is shown below: TextReader class is derived from an abstract class MarshalByRefObject. This instance can be used to call the methods of TextReader class to read content from the file. The File.OpenText() method returns an object of the StreamReader class which is the derived class of TextReader and thus helps in creating a useful instance of TextReader class in the code. The OpenText() method takes the location of the file as input and then it opens an existing UTF-8 encoded text file at the same location for reading. As TextReader is an abstract class, we cannot create its instance directly using ‘new’ keyword but we can use OpenText() method of the File class to achieve the same, as shown below: TextReader text_reader = File.OpenText(file_path) In order to work with TextReader, it is necessary to import System.IO namespace in our code. The advantage of working with ‘using’ block is that it releases the memory acquired by the object specified inside it after the work of the object is completed and the object is no longer required. We can also create TextReader with the help of ‘using’ block as shown below: using(TextReader text_reader = File.OpenText(file_path)) Then, with the help of the text_reader, we can use the methods of TextReader class in order to read content from the file. The above statement will open a file at the location specified by ‘file_path’. TextReader text_reader = File.OpenText(file_path)
0 Comments
Leave a Reply. |