如果上傳檔案的時候,發現上傳的目錄不存在,能否自動開一個同名目錄?
我們可以利用書本裡面,Ch 17 & Ch18原本就有的範例,
兩者組合起來就能完成這一個簡單的小功能。
上禮拜的課程,討論到書本的第十七章(檔案與 I/O)、第十八章(FileUpload控制項)
有學員問道:「如果上傳檔案的時候,發現上傳的目錄不存在,能否自動開一個同名目錄?」
底下的範例,用「******************************」特別註明的這一段 就是這個功能。
我們可以利用書本裡面,原本就有的範例
第十七章,範例 File_Log_2.aspx (功能:發現此一目錄不存在,自動開一個同名目錄)
修改一下第十八章的範例 1.aspx (功能:最基礎的檔案上傳功能)
兩者組合起來就能完成這一個簡單的小功能。
這個範例可以放在第十八章 FileUpload做補充。
VB範例如下:
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/ExpandedBlockStart.gif)
02
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
03 '-- 註解:先設定好檔案上傳的路徑,這是Web Server電腦上的目錄。
04
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
05
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
06 '*******************************************
07
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
08
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
09
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
10 If Not Directory.Exists(my_Dir) Then
11
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
12
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
13
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
14
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
15 If (FileUpload1.HasFile) Then
16
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
17
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
18 savePath = savePath & fileName
19
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
20 FileUpload1.SaveAs(savePath)
21
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
22 Label1.Text = "上傳成功,檔名---- " & fileName
23
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
24 Else
25
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
26
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
27
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
28
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/ExpandedBlockEnd.gif)
C#範例如下:
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/None.gif)
02
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/ExpandedBlockStart.gif)
03
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
04
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
05
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
06
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
07
08
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
09
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
10
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
11
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
12
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/ExpandedSubBlockStart.gif)
13
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
14
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/ExpandedSubBlockEnd.gif)
15
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
16
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
17
18
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
19
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/ExpandedSubBlockStart.gif)
20
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
21
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
22 savePath = savePath + fileName;
23
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
24
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
25 Label1.Text = "上傳成功,檔名---- " + fileName;
26
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/ExpandedSubBlockEnd.gif)
27
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
28
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/ExpandedSubBlockStart.gif)
29
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/InBlock.gif)
30
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/ExpandedSubBlockEnd.gif)
31
![](http://www.dotblogs.com.tw/Providers/BlogEntryEditor/FCKeditor/editor/dialog/InsertCode/codeimages/ExpandedBlockEnd.gif)
請注意檔案上傳的風險,請看:
檢 查上傳檔案副檔名真的有效嗎?分析 IIS6 副檔名解析弱點!!
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