title: How can I combine text from several methods in a textbox in C#?
body: <p>I want to get Text from some text files and insert it to a text box. I created some methods, which get the text of the files. My aim is to combine the text files to one text. the problem is that the program shows me only the last text file. </p>
  
  <p>How can I combine all text files to one?</p>