title: Cannot implicitly convert type 'int' to 'string' C# class
body: <p>I'm trying make a program where you call operations like addition from classes.</p>
  <p>I don't know why there's an error:</p>
  <pre><code>public string Add() {
      string AdditionTotal;
      int num1 = int.Parse(txtFirstNumber.Text);
      int num2 = int.Parse(txtSecondNumber.Text);
      AdditionTotal = num1 + num2; //throws an error here           
      return AdditionTotal;
  }
  
  public string SetText {
      get {
          return txtFirstNumber.Text;
      }
      set {
          txtFirstNumber.Text = value;
      }
  }
  </code></pre>