using System; using System.IO; using System.Text; class Program { static void Main(string[] args) { StringWriter writer = new StringWriter(); writer.WriteLine("Hello,"); writer.WriteLine("world!"); StringBuilder sb = writer.GetStringBuilder(); sb.Replace(",", " "); string result = writer.ToString(); Console.WriteLine(result); } }
Hello, world!
using System; using System.IO; class Program { static void Main(string[] args) { StringWriter writer = new StringWriter(); using (StreamWriter file = new StreamWriter("output.txt")) { file.WriteLine("This is a test."); writer.WriteLine("Also a test."); } string result = writer.ToString(); Console.WriteLine(result); } }This example writes a line of text to a file using a StreamWriter object, and then writes another line of text to a StringWriter object. The final formatted string is retrieved from the StringWriter and printed to the console. This example requires the System.IO package library.