在一个pdf文件中合并两个字节数组 [英] Merge two array of bytes in one pdf file

问题描述

亲爱的，



我有两个字节数组，每个字节代表一页的报告。

i想要合并他们并生成两页的pdf报告。



我该怎么做？



我尝试了什么：

  byte  [ ] bytes = ReportViewer1.LocalReport.Render（  PDF， null ， out  mimeType， out 编码， out  extension1， out  streamIds， out 警告）; 
  byte  [] bytes1 = ReportViewer2.LocalReport.Render（  PDF， null ， out  mimeType， out 编码， out  extension1， out  streamIds， out 警告）; 
 
  byte  [] newByteArray2 = bytes.Concat（bytes1）.ToArray（）; 
 
 System.IO.File.WriteAllBytes（  C：//MyNewReport.pdf，newByteArray2）; 

解决方案

只是连接字节数组不会有用 - DPF是一种容器格式，所以只需将两个容器抽薹在一起就不会产生一个大容器。除了将两袋糖装在一起之外，还会产生一个装满糖的两倍大袋...



看看这个：使用iTextSharp在C＃中拆分和合并PDF文件 [ ^

Dears,

I have two array of bytes each one of them represents a report of one page.
i want to to merge them and generates a pdf report of two pages.

how can i do that?

What I have tried:

byte[] bytes = ReportViewer1.LocalReport.Render("PDF", null, out mimeType, out encoding, out extension1, out streamIds, out warnings);
byte[] bytes1 = ReportViewer2.LocalReport.Render("PDF", null, out mimeType, out encoding, out extension1, out streamIds, out warnings);

byte[] newByteArray2 = bytes.Concat(bytes1).ToArray();

System.IO.File.WriteAllBytes("C://MyNewReport.pdf", newByteArray2);

解决方案

Just concatenating byte arrays won't do anything useful - DPF is a "container" format, so just "bolting" two containers together doesn't produce one big container. Any more than stapling two bags of sugar together would create a bigger bag full of twice as much sugar...

Have a look at this: Splitting and Merging PDF Files in C# Using iTextSharp[^]

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