Function call in another namespace and class
<p>I like to connect the DLL (which contains namespace <code>Chart</code>) and call the subroutine <code>public Simple()</code> from the second class (namespace <code>WinApp2</code>). There is a error:</p>
<blockquote>
<p>couldn't find type or namespace name Simple</p>
</blockquote>
<p>Although I consider a reference and put <code>using Chart</code> and created a instance in the second namespace.</p>
<pre><code>namespace Chart
{
    public partial class Simple : Form
    {
        Manage _mProject;
        public Simple()
        {
            InitializeComponent();
            _mProject = new Manage();
            _mProject.Add(new Task() { Name = &quot;New Task&quot; });
            _mChart.Init(_mProject);
        }
    }
}

using Chart;
namespace WinApp2
{
    public partial class Form4 : Form
    {
        Form2 fh;
        public Form4(Form2 aufrufer)
        {
          fh = aufrufer;
          InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
          var instance = new Simple();   (error !!!)
          instance.Simple();
        }
    }
}
</code></pre>