打印 BLOB 文档
我正在尝试找到一种方法来打印存储为 BLOB 的文档，而无需先打开它，文件名也被存储，因此我有可用的文件扩展名。我唯一的想法是将其保存在用户临时文件夹中，然后将 PrintDocument 类指向它，但我确信有更好的方法可以做到这一点。
感谢所有贡献者。
I am trying to find a way to print a document that is stored as a BLOB without having to first open it, the filename is stored as well so I have the extension of the file available. The only idea I have had is to save it in the users temporary folder and then point the PrintDocument class to it but im sure theres a better way of doing it then that.
Thankyou to all who contribute.
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既然您有文件名，您可以尝试使用 ShellExecute 打印该文件。不过，您必须将其保存到临时位置。
我还认为它与使用 PrintDocument 没有太大区别，因为它也使用文件类型的默认打印操作。另外，我认为你必须pinvoke它。
since you have the filename, you could try using ShellExecute to print the file. you would have to save it to a temporary location, though.
I also think it wouldn't be that much different from using PrintDocument, as it also uses the default Print action for the file type. Also, i think you will have to pinvoke it.