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工作学习 / IT技术讨论 / .NET请教：如果想从数据库里直接取出BLOB数据，然后显示在web form里的某个control上，用那个control？ Image好像不行，只能用imageURL。谢谢。
-luoboyang(萝卜秧);
2003-7-17
(#1290410@0)
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does image control have some size limitation?
-ningxin0809(雁影行洲);
2003-7-17
(#1290417@0)
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不是，是image没有什么property可以给这类BLOB data.
-luoboyang(萝卜秧);
2003-7-17
(#1290425@0)
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probably this URL will help you.
-ningxin0809(雁影行洲);
2003-7-17
(#1290435@0)
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谢谢，我已经得到了，就是想把取出来的show在web form 上。
-luoboyang(萝卜秧);
2003-7-17
(#1290438@0)
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write from BOLB to a tempory file , then show the file on web form based on the file extension. ?
-ningxin0809(雁影行洲);
2003-7-17
(#1290454@0)
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正在试验，一会儿告诉你。：）
-luoboyang(萝卜秧);
2003-7-17
(#1290460@0)
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嗯，成功了！不过，如果客户不希望用temp image file的话，还得想个法子。：））
-luoboyang(萝卜秧);
2003-7-17
(#1290491@0)
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wonderful.
-ningxin0809(雁影行洲);
2003-7-17
(#1290499@0)
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知道吗，客户之所以要用BLOB data，就是为了避免文件在server上的存取访问。所以，我还不知道这个行不行呢。：（
-luoboyang(萝卜秧);
2003-7-17
(#1290505@0)
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my thoughts :)strange, BOLB data we used only for some data we don;t use very often. it is very rare for me to show the data on web form. and I don;t think Oracle will allow you to access the dataset directly. I use MS oracle provider. probably Oracle itself .net provider will give you some benifits? I doubt.
-ningxin0809(雁影行洲);
2003-7-17
{299}
(#1290510@0)
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check your email please.
-lilyba(sunshine困惑不懂装懂);
2003-7-17
(#1290511@0)
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if there is a new way, I want to know either :)
-ningxin0809(雁影行洲);
2003-7-17
(#1290519@0)
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我要是那么自信的话，我就贴在这里了。：（你等等啊。
-lilyba(sunshine困惑不懂装懂);
2003-7-17
(#1290525@0)
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discussion ma, nobody is 100% sure :)
-ningxin0809(雁影行洲);
2003-7-17
(#1290579@0)
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HOW TO: Copy a Picture from a Database Directly to a PictureBox Control with Visual C#
-luoboyang(萝卜秧);
2003-7-17
(#1290528@0)
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windows controls are so richy. they use memory to hold the image instead of temepry file. cost too much.
-ningxin0809(雁影行洲);
2003-7-17
(#1290574@0)
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你这个例子我已经知道了，他用的是windows form上的pictureBox，里面的image property给你很大空间，但是我现在需要的是web form上的control. ：））谢谢anyway.
-luoboyang(萝卜秧);
2003-7-17
(#1290522@0)
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现在才发现web form 里面没有picture这个控件。：（不过我还看到一个用adrotator从xml文件里取image的例程。
-lilyba(sunshine困惑不懂装懂);
2003-7-17
(#1290545@0)
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不用那么麻烦吧：Response.ContentType = "image/gif" Response.BinaryWrite(byte[])
-miketany(MIKE老狼);
2003-7-17
(#1290610@0)
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萝卜秧,试验 :)
-ningxin0809(雁影行洲);
2003-7-17
(#1290612@0)
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The solution exactly you want:
http://www.dotnetjunkies.com/Tutorial/ShowContent.aspx?cg=7C567077-FD40-40A7-8B68-F2744EE55CF9&ForumID=4171Internet has everything, Rolia is good place to find chat expert not tech expert :P
-feihong(feihong);
2003-7-17
{83}
(#1290631@0)