title: C# - DataGridView can't add row?
body: <p>I have a simple C# Windows Forms application which should display a DataGridView. As DataBinding I used an Object (selected a class called Car) and this is what it looks like:</p>
  
  <pre><code>class Car
  {
      public string color { get; set ; }
      public int maxspeed { get; set; }
  
      public Car (string color, int maxspeed) {
          this.color = color;
          this.maxspeed = maxspeed;
      }
  }
  </code></pre>
  
  <p>However, when I set the DataGridView property <code>AllowUserToAddRows</code> to <code>true</code>, there is still no little * which allows me to add rows.</p>
  
  <p>Someone suggested to set <code>carBindingSource.AllowAdd</code> to <code>true</code>, however, when I do that, I get a <code>MissingMethodException</code> which says my constructor could not be found.</p>