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PORead File, Search for Term and replace all line of this term
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copied!<p>I've done a little research but I couldn't find the answer for my question.</p> <p>I've got this code for search for a term and replace it.</p> <p>The point is, In my application I want to choose some files and folders path and then write that path's to my .properties file so that "values" is always changing.</p> <p>In my <code>.properties</code> file I've got <code>db.host=localhost</code> and I want to change it for the host name that user choose like <code>db.host=myhost</code>. There's my code:</p> <pre><code> string originalFile = @"C:\wamp\bin\php\php5.4.3\build.properties"; string outputFile = @"C:\wamp\bin\php\php5.4.3\build1.properties"; string searchTerm = "db.host="; string replaceTerm="db.host=" + tbhost.Text ; string tempLineValue; using (FileStream inputStream = File.OpenRead(originalFile)) { using (StreamReader inputReader = new StreamReader(inputStream)) { using (StreamWriter outputWriter = File.AppendText(outputFile)) { while (null != (tempLineValue = inputReader.ReadLine())) { outputWriter.WriteLine(tempLineValue.Replace(searchTerm, replaceTerm)); } } } } </code></pre> <p>So right now if I search for <code>db.host=</code> and change it for <code>"db.host=" + tbhost.Text</code> the result in my file is <code>db.host=myhostoldhost</code> supposing that my <code>tbhost.Text=myhost</code> and the oldest value is "oldhost". So what I need is to find <code>db.host=</code> delete all line and then write in that line.</p>

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