如何从sql数据库中读取图像？ [英] How read an image from sql database?

问题描述

以allah的名义



嗨所有



i想要从sql读/写图像视觉C ++和反向。

i使用visual C ++ 2012和sql 2012.

i知道使用CDatabase和CRecordset calsses但我不知道我怎么能使用那些读/写图像。

你可以帮我吗？

谢谢

in the name of allah

hi all

i want to read /write images from sql to visual C++ and reverse.
i work with visual C++ 2012 and sql 2012.
i know use the CDatabase and CRecordset calsses but i don't know how can i have to use those to read/write images.
can you help me?
thanks

推荐答案

就我而言知道有两种方法可以将图像存储到数据库中：您可以将图像文件内容存储为二进制对象（参见

• .wikipedia.org / wiki / Binary_large_object>维基百科的BLOB [ ^ ]。。

As far as I know there are two ways for storing images into a database: you might either

• store the image file content as a binary object (see BLOB at Wikipedia[^]).

• 将图像文件路径存储为字符串（有效地将图像文件本身存储在文件系统中）。

• store just the image file path as a string (effectively storing the image file itself in the filesystem).

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