BoldSignEasily embed eSignatures in your .NET applications. Free sandbox with native SDK available.
At present we do not have the support for disabling open, save and print buttons in the built-in toolbar of PdfViewerControl in windows forms. However we can achieve this by using Custom Toolbar sample which is available in Syncfusion Products.
We have attached a custom toolbar sample with disabled open, save and print buttons in the following link:
After running the sample, please check the “Show Custom Toolbar” radio button which is at the top-left.
Please try this sample and let us know whether it suits your requirement.