如何在C＃中使用多个PDF文件创建单个PDF而不使用任何第三方库？

Question

I have a client requirement, in which we have multiple pdf attachments present with each of the Opportunity Record in Dynamics CRM. Whenever end user needs documents; he/she has to download multiple files each time. The requirement is to download all the files as a single pdf file. Also, the files from second file has to be appended one after the other.

Answer 1

A plugin is the wrong way to do this:

• The code to accomplish this is not very plugin compatible. Merging documents requires some level of interaction with an operating system (ie reading and writing files). You could probably hack your way through this with ILMerge and a non-sandboxed plugin, but the result would only work with on-premise CRM and would not be supported by Microsoft.

• Plugins are server side and must trigger on a database action. It sounds like you want a user friendly process which produces this combined document which suggests a client facing application. Your client side program could cause some CRUD operation which triggers this plugin, then retrieve the resulting file, but that is unnecessarily complicated.

Write a web page which generates the document and provides it to the user as a file download dialogue. Call your application from a button within CRM.