How To Read Text From A TXT File

In this article, i will show you how can we read text from a external .txt file in C#. For this purpose, I will be using StreamReader Class for reading text from external txt file.

Instructions:

1. Start by adding following namespace to your code file.
   

   using System.IO;

2. After that add the following code, where you want to read text from a file. This code will read all the text present in the file, line by line.
   
   

   try
{
     using (StreamReader sr = new StreamReader("file.txt")) // replace the file.txt with the exact location of your file.
     {
          String line;
          while ((line = sr.ReadLine()) != null) 
               //sr.ReadLine() reads text line by line 
               // and every time it reads a line, it places cursor in the next line. 
               // So we will read the text to the last line and after that this function return null value.
          {
               Console.WriteLine(line);
          } 
     }
}
catch (Exception ex)
{
     Console.WriteLine("The file could not be read:");
     Console.WriteLine(ex.Message);
}

3. If you want to check that whether the file you specified exists or not, you can use the following code for that purpose.
   
   

   if (!File.Exists("file.txt")) // replace the file.txt with the exact location of your file.
{ 
     return;
}

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