private void atmlPreviewPanel_WebDocumentLoaded(WebBrowser webBrowser) { btnSave.Visible = false; btnBack.Visible = true; btnPrint.Visible = true; btnExportDocument.Visible = false; btnForward.Visible = true; btnBack.Enabled = atmlPreviewPanel.CanGoBack; btnForward.Enabled = atmlPreviewPanel.CanGoForward; }