aspnetcore-402118-rich-edit-printing.md
Call the printDocument method to invoke the Print dialog.
richEdit.printDocument(DevExpress.RichEdit.PrintMode.Pdf);
If the mode parameter is not specified, the RichEdit prints a document in a mode set by the Mode(PrintMode) method on the server or printMode property on the client.
The RichEdit control supports HTML and PDF print modes:
HTML Mode (default). The control renders the document’s markup in a blank browser tab and calls the browser’s Print dialog.
PDF Mode. The control exports the document to PDF and invokes the Print dialog for the PDF file. When you export to PDF, you should upload a list of available fonts and their sources to the client and register the pdfkit library on your page.