private void primaryDatasetUniversalSitesDatasetToolStripMenuItem_Click(object sender, EventArgs e)
 {
     if (MAPresApplication.Workspace.ProjectOpen == false)
     {
         MessageBox.Show(this, "Please open or create new project", "IMSB MAPRes", MessageBoxButtons.OK, MessageBoxIcon.Error);
         return;
     }
     dsViewerWnd = new MAPResDatasetViewer();
     dsViewerWnd.ShowUSD();
 }