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Text File help required in c# windows application

Discussion in 'C#' started by digiface, Sep 26, 2013.

  1. #1
    I am working with .txt files in C#, I want a functionality that if any text already exist in my .txt file, it should not write it.
    Can somebody Please help me?

    Thank you
    digiface, Sep 26, 2013 IP
  2. grandseo

    grandseo Greenhorn

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    Its pretty simple you can use following code for it

    var filename = @"c:\test.txt";
    var textToWrite = "your text here";
    string fileContents;

    // Get File Text
    using (var sr = new StreamReader(filename))
    fileContents = sr.ReadToEnd();

    // Write to File
    using (var sw = new StreamWriter(filename, true))
    // check if text already exists in file
    if (!fileContents.Contains(textToWrite))
    sw.WriteLine(textToWrite); // or use sw.Write depending on the usage scenario
    grandseo, Sep 26, 2013 IP
    seotraining and modernlifeisadam like this.