In C #, the producer creator is called to generate a PDF file.

Http://blog.csdn.net/mcai4gl2/article/details/7294625

A short project was created a while ago to generate a report. The generated report is about the stock price record. There are no ready-made packages and third-party programs for us to use. I heard that the pages rendered by WPF can be saved as PDF files. However, I did not dare to practice them. I finally used my previous methods, office InterOP, insert a lot of placeholder into a template in a Word document, then use C # code to dynamically convert placeholder into data, and then save it. This method is actually quite powerful, but there are a few restrictions and unpleasant points. First, you must install the Office on the machine where the program runs. Word is required. If you want to generate a graph, you also need excel.
Second,. Net Office InterOP is essentially a com package, so performance and stability cannot be too demanding. Third, office InterOP is still annoying. I complained for a long time, but this method is still feasible. However, what should I do if I need to generate a report in PDF format, but the Office does not support PDF generation? I think that I can directly use the pdfcreator virtual printer every time I need to generate a PDF file. I checked it and found that the pdfcreator has a COM API. This problem is solved.

In C #, how do I call the volume creator to generate a PDF file?

Step 1: Install the volume creator (this seems nonsense)

Step 2: Create a csung project and add creator.exe com to reference it

Step 3: See the following code:

[CSHARP]
View plaincopy

1. Public override void process (itask task, int index)
2. {
3. If (! File. exists (path. Combine (fromlocation, fromfilename )))
4. {
5. Throw new filenotfoundexception ("file:" + path. Combine (fromlocation, fromfilename) + "does not exists ");
6. }
8. Monitor. Enter (lockobject );
10. Clspdfcreator creator = NULL;
12. Try
13. {
14. Creator = new clspdfcreator ();
15. Creator. eerror + = new _ clspdfcreator_eerroreventhandler (creator_eerror );
16. Creator. eready + = new _ clspdfcreator_ereadyeventhandler (creator_eready );
17. String paramters = "/noprocessingatstartup ";
19. If (! Creator. cstart ())
20. {
21. Throw new exception ("cannot launch failed creator. Error:" + error );
22. }
24. VaR opt = creator. coptions;
25. Opt. useautosave = 1;
26. Opt. useautosavedirectory = 1;
27. Opt. autosavedirectory = This. tolocation;
28. Opt. autosaveformat = 0;
29. Opt. autosavefilename = This. tofilename;
30. Creator. coptions = OPT;
32. Creator. cclearcache ();
34. Creator. cdefaprinprinter = "pdfcreator ";
36. If (! Creator. cisprintable (path. Combine (fromlocation, fromfilename )))
37. {
38. Throw new exception ("file:" + path. Combine (fromlocation, fromfilename) + "is not printable .");
39. }
41. Creator. cprintfile (path. Combine (fromlocation, fromfilename ));
42. Creator. cprinterstop = false;
44. Ready = false;
45. VaR duration = new timespan (0, 0, 0, timeoutinsec );
47. Datetime lastcheck = datetime. now;
48. Datetime starttime = lastcheck;
50. While (! Ready & (lastcheck-starttime) <duration ))
51. {
52. System. Threading. thread. Sleep (500 );
53. Lastcheck = datetime. now;
54. }
56. Creator. cprinterstop = true;
57. Thread. Sleep (1000 );
58. Creator. cClose ();
60. If (! Ready)
61. {
62. Throw new exception ("PDF creation failed. This maybe due to timeout .");
63. }
64. }
65. Finally
66. {
67. Monitor. Exit (lockobject );
68. }
69. }
71. Void creator_eready ()
72. {
73. This. Ready = true;
74. }
76. Void creator_eerror ()
77. {
78. Error = creator. cerror. description;
79. }

The code is easy to understand. I am very lazy. I didn't re-write the code into a project. I directly pasted the code in the project. If you want to use it, you need to modify it a little. The argument is that the producer Creator does not support multithreading. Therefore, if the program itself is multithreading, you need to add a lock mechanism in the Code to ensure that the calls generated by PDF are single-threaded. In addition, the default value is used for the printer name, which has not been modified. However, these problems are difficult for you to look.