View the HTML file in the resource

Use WebBrowser control in form.
The following code display only 'about:blank' message, replace with your doc.
For C#

private void DisplayHtml(string html)
{
    webBrowser1.Navigate("about:blank");
    if (webBrowser1.Document != null)
    {
        webBrowser1.Document.Write(string.Empty);
    }
    webBrowser1.DocumentText = html;
}

For VB.NET

Private Sub DisplayHtml(ByVal html As String)
    webBrowser1.Navigate("about:blank")
    If webBrowser1.Document IsNot Nothing Then
        webBrowser1.Document.Write(String.Empty)
    End If
    webBrowser1.DocumentText = html
End Sub

Note: You should set AllowNavigation property to true before you deal with contents shown to users.