如何运行存储在Sql中的二进制数据字段

问题描述

Hi
i将字符串转换为byte []如下：

我的字符串是图像代码：



byte [] attachment = Convert.FromBase64String（my string）;



我在二进制字段中保存sql server中的附件。

当我想要的时候在Windows中运行此文件，我无法在Windows照片查看器中看到图像。



i以这种方式运行文件：



附件AttObj = MyDB.Attachment.Where（a => a.AttachmentId == ID）.First（）;



if（AttObj.Attachment1 ！= null）

{

流程proc =新流程（）;



string FileTmpDircetion =目录。 CreateDirectory（我的临时目录）;

FileTmpDircetion = System.IO.File.WriteAllBytes（FileTmpDircetion，AttOb.file）;



proc。 StartInfo.FileName = FileTmpDircetion;

proc.StartInfo.UseShellExecute = true;

proc.Start（）;

}





s请注意：

Windows照片浏览器无法打开此图片，因为该文件似乎已损坏，损坏或太大



请帮帮我

解决方案

Hii convert a string to byte[] as following:
my string is a image code:

byte[] attachment = Convert.FromBase64String(my string);

I save attachment in sql server in a binary field.
when i want to run this file in windows , i cant see image in windows photo viewer.

i run file in this way:

Attachment AttObj = MyDB.Attachment.Where(a => a.AttachmentId == ID).First();

if (AttObj.Attachment1 != null)
{
Process proc = new Process();

string FileTmpDircetion = Directory.CreateDirectory(my temp directory);
FileTmpDircetion = System.IO.File.WriteAllBytes(FileTmpDircetion, AttOb.file);

proc.StartInfo.FileName = FileTmpDircetion ;
proc.StartInfo.UseShellExecute = true;
proc.Start();
}


it shows a message that :
"Windows photo viewr cant open this picture because the file appears to be damaged,corrupted or too large"

please help me

解决方案

这篇关于如何运行存储在Sql中的二进制数据字段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！