Forgive me if this is a dumb question, I'm new to ASP. I have a virtual Windows Server 2012 handling ASP pages, passing them to the host for testing purposes. There is a global.asa file which declares several Application-level variables, though it doesn't seem to be working. I'm not sure if I need to call the file or what, though I can't find any reference to calling it on the internet.
In global.asa:
<SCRIPT LANGUAGE=VBScript RUNAT=Server>
Sub Application_OnStart
Application("someVar") = "testing..."
'More vars...
End Sub
</SCRIPT>
In default.asp: (Or any other file for that matter)
Repsonse.Write(Application("someVar"))
Nothing will output.
However, if I specify a value immediately beforehand like so:
Application("someVar") = "testing..."
Repsonse.Write(Application("someVar"))
It will output "testing..." like it should.
After that, removing the Application("someVar") = "testing..." line will still output "testing...". So the variable is being retained, it just isn't being set initially by the global.asa file.
Is there something else I need to do to initialize them via the global.asa file? Is it a problem with my virtual server setup? I should probably mention that navigating to the global.asa file via the web browser gives me a 404 error. I'm not sure if the server is trying to hide it, but I am as certain as I can be that it is in the same directory as default.asp, the browser just refuses to verify this.
Global iis defined application variables will not work if the site isn't set as a application.
You need to open IIS, and setup the website as new site.
open iis manager
expand servername,
expand 'Sites'
Any sites you have will be listed.
to setup new site
r-click on 'sites' and select 'Add Web Site'
Give it a name, select its location by browsing, and if needed set the host header eg www.mytestdomain.co.uk
OR (this is often the cause in test setups)
If you have a default site setup and this application is a subfolder then you can set that subfolder as an application by simply right clicking on folder and choose 'Convert to application'. click ok on the popup to confirm.
<SCRIPT LANGUAGE=VBScript RUNAT=Server>
Sub Application_OnStart
Application("someVar") = "testing..."
'More vars...
End Sub
</SCRIPT>
May be, you set the var someVar in Global.asa after the application is already running! And if so, Application_OnStart event is already executed!!!
Related
In case, i'm create function to process excel and in the end of process i want to save excel into my "Download" folder in my pc.. but i get a different folder path between my pc and my server.. when i running my application using my pc, i get path "C:/Users/MyPCUserName/Downloads" but when i running application on published file (iis server), i get path "C:\Users\SYSTEM\Downloads\85FE1000".. I don't know what's the wrong with my code / function..
This my Code :
Private Sub myMethod(ByVal pProjectNo As String, ByVal pOrderNo As String)
Dim dt As DataTable = ClsUploadBreakDownInquiryDB.GetFinalInspectionData(pProjectNo, pOrderNo)
if dt.Rows.Count > 0
'My Function Here
Dim user As String = System.Environment.UserName
exl_b2.SaveAs("C:\Users\" & user & "\Downloads\" & pProjectNo & "_" & Microsoft.VisualBasic.Format (Date.Now, "yyyyMMdd_HHmmss") & ".xlsx", Excel.XlFileFormat.xlOpenXMLWorkbook)
End If
End Sub
You can save a up-loaded file on your web server quite much any place you want.
However, if you talking about a client side user - and their browswer download lcoation? You have ZERO, but 100% ZERO control over that location.
In fact, the user might be using a iPhone, or Android - and not even a desktop comptuer.
You do not have ANY ability in ANY case to control the location of a user download of a file. Files on the local computer are 100% hands off. When they download, it will usually go to their downloads folder - but the user settings control that.
You can't grab, see, or set ANY file location on the client side computer. I mean, if you could do that, then when you come to my site to view a cat picture? My code would then rummage around on your computer - looking for files called passwords, or files called banking etc and steal them
So, server side code behind? Sure, you can in most cases save the file on the web server computer anywhere you like - it don't matter a whole lot.
However, if you talking about client side computer locations for the user and their browser hitting your web site? No, you have zero information, zero control over the users files, and even where they choose to save, or download such files - that is their computer - and browsers give protection for reasons of security.
This can sometimes be confusing when using Visual Studio during development, since your computer, your browser and your web site are all running on the ONE SAME computer, but in a typical deployment, that of course is not the case. So, code behind has zero knowledge about the users local file system.
As a result, you cannot grab, or set ANY kind of file location information on the client side computer.
So, saving to "users" with code behind is ONLY going to apply to the code behind web server "user", and has nothing to do with the client side user.
As a general rule, any and all folders you work with and use from code behind? In EVERY case that should be a sub folder of your root of your project.
Keep in mind:
Any markup code - urls - that is relative to your web site
Any code behind - plane jane windows path name.
So, if you add a folder to your project, it might be say folder UpLoadFiles.
So, then web based, mark up based will be like this:
https://localhost:44392/UpLoadFiles/doc.pdf
So, UpLoadFiles is simple a sub folder in your project.
However, in code behind, your code ALWAYS works with plane jane valid windows file names. So, to convert above to a plane jane file path in windows? You do this:
Dim strFile As String = Server.MapPath("~/UpLoadFiles/abc.txt")
Dim strText As String = File.ReadAllText(strFile)
At this point, now str file is a plane jane valid full good old fashioned windows file name.
So, code behind = always plane jane window path name
So, web markup and URL = always a relative path from your project root.
dim strTextFile = File.ReadAllText(strFile).
There are so many similar questions around the web, but none of them have helped me with this.
I have an asp.net application on a company intranet server. It is used to access a database on another file server, which also contains a number of images relevant to each record in the database.
I am a developer, but not a network person. I know a little bit about IIS, and using the IIS Manager, I created a virtual directory inside the asp.net application folder that maps to the UNC address on the other server where the images are. Using IIS Manager, I can explore the virtual directory and see all the files there. The problem is getting them to show up in my asp.net application.
I've tried setting permissions on the folder for Network Service, IUSR_aspnetserver, and my own credentials; I've tried various permutations of the path string, with / or // or \ or \, etc. I've tried impersonation, but I don't know if I am doing it right. I've placed a "debug" label on the page that tells me the path of the image while the app is running, and it is correct. Nothing seems to work.
Obviously there's something I am missing, but my network comprehension is around zero, my IIS experience is hardly any better, and I can't seem to get our staff of IT "experts" to help. And before you jump to any conclusions, I have a great personality.
Any ideas would be appreciated.
Thanks!
EDIT for #MohsinMehmood:
(I hope this is not too convoluted)
The page has a mapped drive in IIS to UNC share \\OtherServer\AppName\Images to a folder named ReceiptImages.
The web.config file has this entry:
<appSettings>
<add key="ImageFilePath" value="ReceiptImages/"/>
</appSettings>
And in the PageLoad event I have
ViewState("ImagesPath") = ConfigurationManager.AppSettings("ImageFilePath")
To create a global path string.
Then in code (VB) it's:
Dim btnReceiptThumbnailButton As New ImageButton
With btnReceiptThumbnailButton
.ID = "btn" & LineItem
.CssClass = "thumbnails"
.ImageAlign = ImageAlign.AbsMiddle
.Visible = True
.BackColor = Drawing.Color.White
.BorderColor = Drawing.Color.Black
.BorderWidth = 1
.ImageUrl = ViewState("ImagesPath") & LineItem
.CommandName = "GetReceiptImage"
.CommandArgument = LineItem
End With
I don't know if it was important enough to mention that the image is being placed in a button control to make it a thumbnail.
I have a Classic ASP website which we have moved from IIS 6 to Win2k8 and IIS 7. Within the website folder structure, is a Virtual Directory called Products containing JPGs that are physically stored elsewhere on the same server.
Within a web browser, any of the Product JPGs display correctly on the page. E.g. http://www.MySite.com/images/poducts/widget.jpg works a treat.
However, this folder is unavailable when trying to access it in ASP code, using the FileSystemObject - all other files/folders are there except the Virtual Directory. Here is an example ASP code snippet:
Set objFSO = Server.CreateObject( "Scripting.FileSystemObject" )
Set objBaseFolder = objFSO.GetFolder( Server.Mappath( "../../Images" ) )
For Each objFolder In objBaseFolder.SubFolders
Response.Write( objFolder.Name & "<br>" )
Next
Set objFolder = Nothing
Set objBaseFolder = Nothing
Set objFSO = Nothing
Additionally, Persit's ASPJpeg Com Object has no problem opening and saving JPG files to/from this Virtual Directory from ASP code.
In IIS7, the website has an Application Pool, and I've tried all manner settings for its identity to no avail. I have also tried applying various security settings (IUSR_, Network Service, et al) to the physical folder that the Virtual Directory points to - even granting full control to "Everyone" at one point.
It really seems like the ASP process does not have permission to Virtual Directories. If anyone has and idea on how to solve this problem then I'd be most greatful.
Using FileSystemObject to do this is never going to work because it only works on the physical file system. It does not know about or understand virtual directories - this aspect of your site is managed entirely by IIS.
It is not a question of permissions it is a question of the directory not physically being there so browsing the physical file system will never see it
IIS manages virtual directories:
Navigating to an image in your browser works because IIS automatically maps the virtual path to the appropriate physical path.
Using AspJpeg works most likely because it uses calls to Server.MapPath to resolve the given path into a physical path
This cannot be an issue of permissions since you stated yourself that AspJpeg can read and write to the virtual directory fine plus you can access it through your browser fine.
I vaguely remember having a problem like that and the culprit was Server.Mappath. To solve it I needed to map to a file inside the folder and then remove the file part
Server.Mappath( "../../Images/dummy.gif")
the "../" notation is not always allowed for security reasons. If you have access to IIS see if it is enabled or disabled.
I have a root directory on a web server that is linked to a number of URLs. I want to use the application begin request event of a global.asax file to divert requests to the directories containing the content for the relevant web sites. So in psuedo code terms something like this -
If URL.Contains("www.somthing.com") Then divert user to directory x
If URL.Contains("www.somthingelse.com") Then divert user to directory y
I thought I'd be able to accomplish this by just dropping a global.asax file with the relevant code into the web servers root directory (I want to avoid complications such as a web.config file as it's contents will affect other applications I have in sub directories).
Unfortunately, this approach does not seem to work as the application begin request event doesn't appear to fire. I've got round the problem by adding a default.aspx file and making it the default document for the root directory. This appears to work, I presume this is because asp.net compiles the default.aspx file and in turn compiles the global.asax file which allows the events to fire?
Is my workaround the best way to accomplish what I need to do or is there a simpler way to get the global.asax events to fire using a single file?
Sounds like you're looking for a Host Header based redirection.
You can accomplish this by configure your
ISA Server like this or your IIS like this.
Where can I setup custom errors for directories in my application such as App_Code, App_Browsers, etc.? I already have customErrors configured in the web.config and that works as expected. For example,
http://www.mysite.com/bla.aspx > redirects to 404 page
but
http://www.mysite.com/App_Code/ > displays "The system cannot find the file specified."
There's no physical App_Code directory for my site. Is this something that I can change in IIS?
You are trying to server content from an Protected Folder... ??
I think you might need to allow access to these folders to get the nice errors you are looking for...
http://www.webdavsystem.com/server/documentation/hosting_iis_asp_net/protected_folders
That being said... there is a reason these folders are protected.
I would never put anything i needed IIS to serve in protected folders.
But there are always reasons to do do something? i have broke a few rules in my short lifespan :)
UPDATE:
Found this when i tried this locally: http://support.microsoft.com/kb/942047/
Looks like those reserved directories throw special 404's you might be able to get IIS to Target the 404.8 type... with out opening up serving to those directories
I believe you will need to set the error pages in IIS itself, as the requests you talk about never reach the ASP.NET application. The reason your first example works is because IIS recognises the .ASPX extension and forwards it to ASP.NET.
One way is to provide a redirect in the global.asax file:
void Application_Error(object sender, EventArgs e)
{
//uncomment this to narrow down 'helpful' microsoft messages
//HttpRequest request = ((HttpApplication)sender).Context.Request;
Exception ex = Server.GetLastError();
//ErrorManager is a custom error handling module
ErrorManager.ProcessError(ex);
Response.Redirect("~/error.aspx?error=" + HttpUtility.UrlEncode(ex.Message), true);
}
{ On a side note, I was getting an exception that I just couldn't track down - it just said 'file not found' but didn't say which file was missing. It turned out to be a broken image reference in a css file - breaking on line two of the code above helped identify the missing file }
Add a Wildcard Mapping to IIS to run ALL Requests through ASP.net, then you can use Global.asax to handle the error.
Taken from here:
Follow these steps to create a wildcard script map with IIS 6.0:
Right-click a website and select Properties
Select the Home Directory tab
Click the Configuration button
Select the Mappings tab
Click the Insert button (see Figure 4)
Paste the path to the aspnet_isapi.dll into the Executable field (you can copy this path from the script map for .aspx files)
Uncheck the checkbox labeled Verify that file exists
Click the OK button