Context menu did not apply on html button

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C#

Windows

application

i am create a webbrowser with the html button an label on click on button or label these object or shown in the webbrowser control but i iwant to know that how can i show the context menu on the button or label conming from the html

public void button()
        {
            frmButtonProperties p = new frmButtonProperties(); 
            if (p.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                string button = "<input id=\"Button2\" type=\"button\" value=\"" + p.SelectedCaption + "\" style=\"background-color: " + p.SelectedBackColor +
                    "; height: " + p.SelectedHeight + "; width: " + p.SelectedWidth + "; color: " + p.SelectedForeColor + "\" />";

                Button btn = new Button();
                btn.ContextMenuStrip = ButtonContextMenu;
                webBrowser1.Controls.Add(btn);
                sb.Append(button);
                webBrowser1.DocumentText = sb.ToString();

            } 

        }

Know how can I give context menu control to the string button which shows the html button in webbrowser control

[edit]Code block added, SHOUTING removed - OriginalGriff[/edit]