Simulate CAD opening function, including prompt content when opening, so that users can choose on their own; Moreover, the same file can be opened repeatedly
Open file prompt
Read only prompt for opening the same file

Autodesk.AutoCAD.ApplicationServices.DocumentCollectionExtension.Open

Autodesk.AutoCAD.ApplicationServices.DocumentCollectionExtension.Open Can be opened read-only, but will ignore prompts

System.Diagnostics.Process.Start
System.Diagnostics.Process.Start Will not ignore the prompt, but cannot open the same file repeatedly and cannot be opened read-only