Code Snippets

C# Source Code

Welcome to Dream.In.Code
	Getting C# Help is Easy! Join 131,962 C# Programmers for FREE! Get instant access to thousands of C# experts, tutorials, code snippets, and more! There are 2,060 people online right now. Registration is fast and FREE... Join Now! Chat LIVE With a C# Expert

Working with text files

Here are 3 snippets for reading text files in C#. 1 to write to a text file, one to read a single line of a text file anf one to read the whole file, place it into a variable

Submitted By: PsychoCoder

Actions:

Rating:

Views: 1,820

Language: C#

Last Modified: August 31, 2007

Instructions: Each method has a single parameter, the file name you wish to work with.

Snippet

// 1) Write to a text file
public void WriteToFile(string file)
{
//create a TextWriter then open the file
TextWriter writer = new StreamWriter(file);
//now write the date to the file
writer.WriteLine(DateTime.Now);
//close the writer
writer.Close();
}
// 2) Read a single line from text file
public void readALine(string file)
{
//create a new TextReader then open the file
TextReader reader = new StreamReader(file);
//read a single line from the file
reader.ReadLine();
}
// 3) Read entire file into a variable then
// return the contenxt
public string ReadWholeFile(string file)
{
//create a string variable to hold the file contents
string fileContents;
//create a new TextReader then open the file
TextReader reader = new StreamReader(file);
//loop through the entire file
while (reader.Peek() != -1)
{
//add each line to the fileContents variable
fileContents += reader.ReadLine().ToString();
}
//close the reader
reader.Close()
//return the results
return fileContents;
}

Copy & Paste

// 1) Write to a text file
public void WriteToFile(string file)
{
    //create a TextWriter then open the file
    TextWriter writer = new StreamWriter(file);
    //now write the date to the file
    writer.WriteLine(DateTime.Now);
    //close the writer
    writer.Close();
}

// 2) Read a single line from text file
public void readALine(string file)
{
    //create a new TextReader then open the file
    TextReader reader = new StreamReader(file);
    //read a single line from the file
    reader.ReadLine();
}

// 3) Read entire file into a variable then
// return the contenxt
public string ReadWholeFile(string file)
{
     //create a string variable to hold the file contents
     string fileContents;
     //create a new TextReader then open the file
     TextReader reader = new StreamReader(file);
     //loop through the entire file
     while (reader.Peek() != -1)
     {
         //add each line to the fileContents variable
         fileContents += reader.ReadLine().ToString();
     }
     //close the reader
     reader.Close()
     //return the results
     return fileContents;
}