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56 lines
2.1 KiB
C#
56 lines
2.1 KiB
C#
using System;
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using System.IO;
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using System.Text;
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class filexercise3
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{
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public static void Main()
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{
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string fileName = @"mytest.txt";
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try
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{
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// Delete the file if it exists.
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if (File.Exists(fileName))
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{
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File.Delete(fileName);
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}
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Console.Write("\n\n Append some text to an existing file :\n");
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Console.Write("--------------------------------------------\n");
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// Create the file.
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using (StreamWriter fileStr = File.CreateText(fileName))
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{
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fileStr.WriteLine(" Hello and Welcome");
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fileStr.WriteLine(" It is the first content");
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fileStr.WriteLine(" of the text file mytest.txt");
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}
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using (StreamReader sr = File.OpenText(fileName))
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{
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string s = "";
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Console.WriteLine(" Here is the content of the file mytest.txt : ");
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while ((s = sr.ReadLine()) != null)
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{
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Console.WriteLine(s);
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}
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Console.WriteLine("");
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}
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using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"mytest.txt", true))
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{
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file.WriteLine(" This is the line appended at last line.");
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}
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using (StreamReader sr = File.OpenText(fileName))
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{
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string s = "";
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Console.WriteLine(" Here is the content of the file after appending the text : ");
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while ((s = sr.ReadLine()) != null)
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{
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Console.WriteLine(s);
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}
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Console.WriteLine("");
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}
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}
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catch (Exception MyExcep)
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{
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Console.WriteLine(MyExcep.ToString());
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}
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}
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} |