Question

I am trying to open a .txt file, search for one word and replace it with another everywhere it appears. I can do this but not with .txt file only with string’s that I wrote myself in the .cs file.Here is the method I have so far:

public void EditorialControl(string fileName, string word, string replacement)
    {            
        List<string> list = new List<string>();
        using (StreamReader reader = new StreamReader(directory + fileName))
        {
            string line;
            while ((line = reader.ReadLine()) != null)
            {                   
                Console.WriteLine(line);
                list.Add(line);
            }
            reader.Close();
        }
     }

When I call the method in the Main(), it should take the parameters word and replace it with a replacement word of my choice.

Can you guys help me with the code to replace a word in the method?

Answer 1

It is way simpler than you might think:

File.WriteAllText(fileName, File.ReadAllText(fileName).Replace(word1, word2));

And that’s it!