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C# Tutorials : Writing to a text file using ‘StreamWriter’
C# Tutorials : Writing to a text file using ‘StreamWriter’

C# StreamWriter Example

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  • Summary of article content: Articles about C# StreamWriter Example StreamWriter in C# writes characters to a stream in a specified encoding. StreamWriter.Write() method is responsible for writing text … …
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Creating a StreamWriter using a FileStream

StreamWriterWrite() method

StreamWriterWriteLine() method

StreamWriterWriteAsync() method

StreamWriterWriteLineAsync() method

StreamWriter Code Example

Summary

C# StreamWriter Example
C# StreamWriter Example

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streamWriter

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streamWriter
streamWriter

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Ngôn ngữ C# – StreamWriter

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  • Summary of article content: Articles about Ngôn ngữ C# – StreamWriter Lớp StreamWriter trong C# … Lớp C # StreamWriter được sử dụng để ghi nhiều ký tự vào luồng. Lớp này kế thừa từ lớp TextWriter và có hai phương thức đề ghi dữ … …
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Ngôn ngữ C# - StreamWriter
Ngôn ngữ C# – StreamWriter

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c# – How to Write to a file using StreamWriter? – Stack Overflow

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  • Most searched keywords: Whether you are looking for c# – How to Write to a file using StreamWriter? – Stack Overflow You should split it into 2 methods: SaveData() and WriteData(StreamWriter file) .
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c# - How to Write to a file using StreamWriter? - Stack Overflow
c# – How to Write to a file using StreamWriter? – Stack Overflow

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C# StreamWriter – javatpoint

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  • Summary of article content: Articles about C# StreamWriter – javatpoint C# StreamWriter is used to write characters to a stream in specific encoding. It inherits TextWriter . It proves overloaded write() and … …
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C# StreamWriter - javatpoint
C# StreamWriter – javatpoint

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Ví dụ về C # StreamWriter – GraphGuide.org

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  • Summary of article content: Articles about Ví dụ về C # StreamWriter – GraphGuide.org string fileName = @ ”C: TempCSharpAuthors.txt”; · thử · { · bằng cách sử dụng (StreamWriter writer = new StreamWriter (fileName)) · { · riter.Write (“Tệp này chứa … …
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Tạo StreamWriter bằng FileStream

Phương thức StreamWriterWrite ()

Phương thức StreamWriterWriteLine ()

Phương thức StreamWriterWriteAsync ()

Phương thức StreamWriterWriteLineAsync ()

Ví dụ về mã StreamWriter

Bản tóm tắt

Ví dụ về C # StreamWriter - GraphGuide.org
Ví dụ về C # StreamWriter – GraphGuide.org

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C# StreamWriter – reading text files in C# with StreamWriter

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  • Summary of article content: Articles about C# StreamWriter – reading text files in C# with StreamWriter StreamWriter writes characters to a stream in a particular encoding. StreamWriter defaults to UTF-8 encoding unless specified otherwise. C# … …
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    in C# with StreamWriter. StreamWriter writes characters to a stream in a particular encoding.
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Ebooks

C# StreamWriter

C# StreamWriter example

C# StreamWriter write formatted string

C# StreamWriter append text

C# StreamWriter - reading text files in C# with StreamWriter
C# StreamWriter – reading text files in C# with StreamWriter

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C# StreamWriter Example

StreamWriter class in C# writes characters to a stream in a specified encoding. StreamWriter.Write() method is responsible for writing text to a stream. StreamWriter class is inherited from TextWriter class that provides methods to write an object to a string, write strings to a file, or to serialize XML.

StreamWriter is defined in the System.IO namespace. StreamWriter provides the following Write methods,

Write – Writes data to the stream. WriteAsync – Writes data to the stream asynchronously. WriteLine – Writes a line terminator to the text string or stream. WriteLineAsync – Writes a line terminator to the text string or stream asynchronously. Creating a StreamWriter using a Filename

StreamWriter constructor takes a file name or a FileStream object with Encoding, and buffer size as optional parameters.

The following code snippet creates a StreamWriter from a filename with default encoding and buffer size.

string fileName = @ “C:\Temp\Mahesh.txt” ; StreamWriter writer = new StreamWriter(fileName);

The following code snippet creates a StreamWriter and adds some text to the writer using StreamWriter.Write method. If the file does not exist, the writer will create a new file. If the file already exists, the writer will override its content.

string fileName = @ “C:\Temp\CSharpAuthors.txt” ; try { using (StreamWriter writer = new StreamWriter(fileName)) { writer.Write( “This file contains C# Corner Authors.” ); } } catch (Exception exp) { Console.Write(exp.Message); }

Creating a StreamWriter using a FileStream

StreamWriter constructor takes a FileStream object with Encoding, and buffer size as optional parameters. The following code snippet creates a StreamWriter from a FileStream with default encoding and buffer size.

FileStream stream = new FileStream(fileName, FileMode.CreateNew); using (StreamWriter writer = new StreamWriter(stream)) { writer.Write( “Hello StreamWriter” ); }

The following code snippet creates a StreamWriter from a FileStream with Encoding. Encoding supported are ASCII, Unicode, UTF32, UTF7, and UTF8. Encoding is defined in the System.Text namespace.

using (StreamWriter writer = new StreamWriter(stream, Encoding.UTF32))

The following code snippet creates a StreamWriter from a FileStream with encoding and buffer size.

using (StreamWriter writer = new StreamWriter(stream, Encoding.UTF32, 512))

StreamWriter.Write() method

StreamWriter.Write() method writes a char, string of chars, or a string to the steam. The following code snippet creates and writes different content to the stream.

using (StreamWriter writer = new StreamWriter(stream, Encoding.UTF8 )) { writer.Write( ‘y’ ); char [] arr = { ‘1’ , ‘3’ , ‘5’ , ‘7’ }; writer.Write(arr); string author = “Mahesh Chand” ; writer.Write(author); }

StreamWriter.WriteLine() method

StreamWriter.WriteLine() method writes a string to the next line to the steam. The following code snippet creates and writes different author names to the stream.

using (StreamWriter writer = new StreamWriter(stream, Encoding.UTF8 )) { writer.WriteLine( “C# Corner Authors” ); writer.WriteLine( “==================” ); writer.WriteLine( “Monica Rathbun” ); writer.WriteLine( “Vidya Agarwal” ); writer.WriteLine( “Mahesh Chand” ); writer.WriteLine( “Vijay Anand” ); writer.WriteLine( “Jignesh Trivedi” ); }

StreamWriter.WriteAsync() method

StreamWriter.WriteAsync() method writes a char, string of chars, or a string to the stream asynchronously. The method returns a Task that represents the asynchronous write operation. The following code snippet creates and writes different content to the stream.

static async void WriteCharacters() { UnicodeEncoding encoder = new UnicodeEncoding(); string str = “This is a StreamWriter code sample.” ; char [] chars = encoder.GetChars( encoder.GetBytes(str)); using (StreamWriter writer = File.CreateText(@ “C:\Temp\AsyncFile.txt” )) { await writer.WriteAsync(chars, 0, chars.Length); } }

StreamWriter.WriteLineAsync() method

StreamWriter.WriteLineAsync() method writes a char or char array to a new asynchronously. The method returns a Task that represents the asynchronous write operation. The following code snippet creates and writes a new line for each char to the stream.

UnicodeEncoding encoder = new UnicodeEncoding(); using (StreamWriter writer = File.CreateText(@ “C:\Temp\AsyncFile.txt” )) { await writer.WriteLineAsync( ‘m’ ); await writer.WriteLineAsync( ‘a’ ); await writer.WriteLineAsync( ‘h’ ); await writer.WriteLineAsync( ‘e’ ); await writer.WriteLineAsync( ‘s’ ); await writer.WriteLineAsync( ‘h’ ); }

StreamWriter Code Example

Here is the complete code example of the use of StreamWriter and its methods. The code also reads the content of the file and displays on the console.

using System; using System.IO; using System.Text; class Program { static void Main( string [] args) { string fileName = @ “C:\Temp\CSharpAuthors.txt” ; FileStream stream = null ; try { stream = new FileStream(fileName, FileMode.OpenOrCreate); using (StreamWriter writer = new StreamWriter(stream, Encoding.UTF8 )) { writer.WriteLine( “C# Corner Authors” ); writer.WriteLine( “==================” ); writer.WriteLine( “Monica Rathbun” ); writer.WriteLine( “Vidya Agarwal” ); writer.WriteLine( “Mahesh Chand” ); writer.WriteLine( “Vijay Anand” ); writer.WriteLine( “Jignesh Trivedi” ); } } finally { if (stream != null ) stream.Dispose(); } string readText = File.ReadAllText(fileName); Console.WriteLine(readText); Console.ReadKey(); } }

The output of the above code looks like the following,

Summary

In this article and code sample, we saw how to use a StreamWriter class to write to a text file.

StreamWriter

Lớp StreamWriter trong C#

Lớp C # StreamWriter được sử dụng để ghi nhiều ký tự vào luồng. Lớp này kế thừa từ lớp TextWriter và có hai phương thức đề ghi dữ liệu vào tập tin: write() và writeln().

Ví dụ StreamWriter

Chúng ta hãy xem một ví dụ đơn giản về lớp StreamWriter ghi một dòng dữ liệu vào tập tin.

using System; using System.IO; public class StreamWriterExample { public static void Main(string[] args) { FileStream f = new FileStream(“e:\\output.txt”, FileMode.Create); StreamWriter s = new StreamWriter(f); s.WriteLine(“hello c#”); s.Close(); f.Close(); Console.WriteLine(“File created successfully…”); } }

Kết quả:

File created successfully…

Mở tập tiny, bạn sẽ thấy “hello c#” trong tập tin output.txt.

output.txt:

How to Write to a file using StreamWriter?

in my Wpf app I’m using a class Person (that is a base class), and that contains a virtual method SaveData(), and other class Client that inherits from Person. How to override method SaveData() and keeping data from base?

Class Person

public virtual void SaveData() { string arqName = string.Format(“Person{0}” + “.txt”, Id); StreamWriter file = new StreamWriter(arqNome); file.WriteLine(“ID: ” + Id); file.WriteLine(“DOB: ” + dOB); file.WriteLine(“Name: ” + name); file.WriteLine(“Age: ” + age); file.Flush(); file.Close(); }

Class Client

public override void SaveData() { base.SaveData(); string arqName = string.Format(“Person{0}” + “.txt”, Id); StreamWriter file = new StreamWriter(arqNome); file.WriteLine(“Cod: ” + cod); file.WriteLine(“Credits: ” + credits); file.Flush(); file.Close(); }

The override method in Client is indeed override others data as Name, Age, DOB… I need to mantains both in same file.

So you have finished reading the streamwriter topic article, if you find this article useful, please share it. Thank you very much. See more: StreamWriter C#, Streamwriter path, StreamWriter encoding UTF 8 c#, StreamWriter Flush, C# StreamWriter append, Write file C#, File Open C#, StreamReader

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