c # crear un archivo y escribir un ejemplo de código

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Ejemplo 1: c # crea un archivo de texto

//File and path you want to create and write tostring fileName =@"C:TempTemp.txt";//Check if the file existsif(!File.Exists(fileName))// Create the file and use streamWriter to write text to it.//If the file existence is not check, this will overwrite said file.//Use the using block so the file can close and vairable disposed correctlyusing(StreamWriter writer = File.CreateText(fileName))
        writer.WriteLine("Hello World");

Ejemplo 2: cómo crear un archivo en c #

// File class is in the System.IO namespaceFileStream file = File.Create(path);
file.Close()

Ejemplo 3: archivo de escritura c #

classWriteTextFilestaticvoidMain()// These examples assume a "C:UsersPublicTestFolder" folder on your machine.// You can modify the path if necessary.// Example #1: Write an array of strings to a file.// Create a string array that consists of three lines.string[] lines ="First line","Second line","Third line";// WriteAllLines creates a file, writes a collection of strings to the file,// and then closes the file.  You do NOT need to call Flush() or Close().
        System.IO.File.WriteAllLines(@"C:UsersPublicTestFolderWriteLines.txt", lines);// Example #2: Write one string to a text file.string text ="A class is the most powerful data type in C#. Like a structure, "+"a class defines the data and behavior of the data type. ";// WriteAllText creates a file, writes the specified string to the file,// and then closes the file.    You do NOT need to call Flush() or Close().
        System.IO.File.WriteAllText(@"C:UsersPublicTestFolderWriteText.txt", text);// Example #3: Write only some strings in an array to a file.// The using statement automatically flushes AND CLOSES the stream and calls// IDisposable.Dispose on the stream object.// NOTE: do not use FileStream for text files because it writes bytes, but StreamWriter// encodes the output as text.using(System.IO.StreamWriter file =newSystem.IO.StreamWriter(@"C:UsersPublicTestFolderWriteLines2.txt"))foreach(string line in lines)// If the line doesn't contain the word 'Second', write the line to the file.if(!line.Contains("Second"))
                    file.WriteLine(line);// Example #4: Append new text to an existing file.// The using statement automatically flushes AND CLOSES the stream and calls// IDisposable.Dispose on the stream object.using(System.IO.StreamWriter file =newSystem.IO.StreamWriter(@"C:UsersPublicTestFolderWriteLines2.txt",true))
            file.WriteLine("Fourth line");//Output (to WriteLines.txt)://   First line//   Second line//   Third line//Output (to WriteText.txt)://   A class is the most powerful data type in C#. Like a structure, a class defines the data and behavior of the data type.//Output to WriteLines2.txt after Example #3://   First line//   Third line//Output to WriteLines2.txt after Example #4://   First line//   Third line//   Fourth line

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