I want to change Virtual Path(The path is out of project means local system or Server.) of the file Which is save on the folder in asp.net.
Code is
DataTable dtFiles =
GetFilesInDirectory(HttpContext.Current.Server.MapPath(UPLOADFOLDER));
gv.DataSource = dtFiles;
gv.DataBind();
if (dtFiles != null && dtFiles.Rows.Count > 0)
{
double totalSize = Convert.ToDouble(dtFiles.Compute("SUM(Size)", ""));
if (totalSize > 0) lblTotalSize.Text = CalculateFileSize(totalSize);
}
private static string UPLOADFOLDER = "D:/Uploads";
And the error show "D:/Uploads is not a valid virtual path.".
If you want to get the files in a directory and you know the full path, then you don't need to use Server.MapPath(). Just use the path.
Incidentally, the path delimiter is incorrect in your code. The string "D:/Uploads" should be #"D:\Uploads" (note the leading # sign to denote a string that should be treated literally and not escaped).
Of course. You're telling your server to map path that is completely off the IIS. How is it supposed to do? If you're using a web application, try to avoid such ideas completely. Even though it is possible, it isn't a good idea because of security issues you can run into.
Related
I am trying to convert pdf into images using magickNET and ghostscript. It works well on local and windows VMS servers. But when i push to azure servers it gives me the error saying FailedToExecuteCommand ghostscript gswin64c.exe. Details of error in attachements.
I tried changing the path for ghostscript dll but found no luck. The path is correct and dll file is there. One thing I am sure of. I have put dll inside wwwroot/GhostScriptDll. on error it shows "D:/home/site/wwwroot/wwwroot/GhostScriptDll/gswin64c.exe" which is also correct there are 2's wwwroot.
can someone help me to use ghostscript without webjobs things.
C# code i tried is like this
enter image description here
string rawpath = _hostingEnvironment.WebRootPath + "\\GhostScriptDll"
MagickNET.SetGhostscriptDirectory(rawpath);
MagickReadSettings settings = new MagickReadSettings();
settings.Density = new Density(300, 300);
List<string> intList = new List<string>() { };
using (MagickImageCollection images = new MagickImageCollection())
{
images.Read($"{rawFileLocation}{model.OriginalDocName}", settings);
int page = 1;
string tempName = "";
foreach (MagickImage image in images)
{
tempName = System.IO.Path.GetRandomFileName().Replace(".", string.Empty) + "_processed_" + page + ".png";
image.Write($"{processedFileLocation}{tempName}");
intList.Add(tempName);
page++;
}
}
i doubt in this part of error D:/local/Temp/magick-MB0cs71xMgZUfIHIwbzlzehBIlLL-NED"' (The system cannot find the file specified.
) # error/delegate.c/ExternalDelegateCommand/475 ...i dont find the local/temp/.. folder in server though
As we know that a virtual direcoty can be linked to a folder with a diffrent name, how can I get the physical path of a virtual directory ?
I've been trying with HttpContext.Current.server.MapPath but it returns me the physic path plus the path I send in parameter even if the directory doesn't even exist or if it exists with a diffrent name.
Exemple :
C:\blabla\Sites\Application1\Imaageesss
- On disc
Application1\Images (In ISS, my virutal directory)
But if I do a MapPath on "/Images" it will never give me
C:\blabla\Sites\Application1\Imaageesss but
C:\inetpub\wwwroot\Images which is not the real directory linked to.
Server.MapPath("~/Images")
is the correct way to go about it as "~" references the root of your application.
This is what worked for me:
string physicalPath =
System.Web.Hosting.HostingEnvironment.MapPath(HttpContext.Current.Request.ApplicationPath);
What if you try this little snippet?
string physicalPath = HttpContext.Current.Request.MapPath(appPath);
After some more research I was able to create a method to get the physical path of a virtual IIS directory:
public static string VirtualToPhysicalPath(string vPath) {
// Remove query string:
vPath = Regex.Replace(vPath, #"\?.+", "").ToLower();
// Check if file is in standard folder:
var pPath = System.Web.Hosting.HostingEnvironment.MapPath("~" + vPath);
if (System.IO.File.Exists(pPath)) return pPath;
// Else check for IIS virtual directory:
var siteName = System.Web.Hosting.HostingEnvironment.ApplicationHost.GetSiteName();
var sm = new Microsoft.Web.Administration.ServerManager();
var vDirs = sm.Sites[siteName].Applications[0].VirtualDirectories;
foreach (var vd in vDirs) {
if (vd.Path != "/" && vPath.Contains(vd.Path.ToLower())) pPath = vPath.Replace(vd.Path.ToLower(), vd.PhysicalPath).Replace("/", "\\");
}
return pPath;
}
Caveat: this solution assumes that you only have a root application (Applications[0]).
The following should work just fine:
var physicalPath = HostingEnvironment.MapPath("~/MyVirtualDirectory");
This might answer your question:
http://msdn.microsoft.com/en-us/library/system.web.httprequest.physicalpath.aspx
However, I can't currently provide an example, because I have got a lot of work to do. When I'll find some time I'll send detailed information.
I have a text file inside the assembly say MyAssembly. I am trying to access that text file from the code like this :
Stream stream = Assembly.GetAssembly(typeof(MyClass)).GetFile("data");
where data is data.txt file containing some data and I have added that .txt as Embedded Resources. I have dome reading of the images from the Assebly as embedded resources with code like this :
protected Stream GetLogoImageStream()
{
Assembly current = Assembly.GetExecutingAssembly();
string imageFileNameFormat = "{0}.{1}";
string imageName = "myLogo.GIF";
string assemblyName = current.ManifestModule.Name;
int extensionIndex = assemblyName.LastIndexOf(".dll", StringComparison.CurrentCultureIgnoreCase);
string file = string.Format(imageFileNameFormat, assemblyName.Remove(extensionIndex, 4), imageName);
Stream thisImageStream = current.GetManifestResourceStream(file);
return thisImageStream;
}
However, this approach did not work while reading the .txt file from an the executing assembly. I would really appreciate if anybody can point me to the approach to read .txt file from an assembly. Please dont ask me why I am not reading the file from the drive or the network share. Just say that the requirement is to read the .txt file from the Assembly.
Thank you so much
GetManifestResourceStream is indeed the correct way to read the data. However, when it returns null, that usually means you have specified the wrong name. Specifying the correct name is not as simple as it seems. The rules are:
The VB.NET compiler generates a resource name of <root namespace>.<physical filename>.
The C# compiler generates a resource name of <default namespace>.<folder location>.<physical filename>, where <folder location> is the relative folder path of the file within the project, using dots as path separators.
You can call the Assembly.GetManifestResourceNames method in the debugger to check the actual names generated by the compiler.
Your approach should work. GetManifestResourceStream returns null, if the resource is not found. Try checking the run-time value of your file variable with the actual name of the resource stored in the assembly (you could check it using Reflector).
I really appreciate for everybody's help on this question. I was able to read the file with the code like this :
Assembly a = Assembly.GetExecutingAssembly();
string[] nameList = a.GetManifestResourceNames();
string manifestanme = string.Empty;
if (nameList != null && nameList.Length > 0)
{
foreach (string name in nameList)
{
if (name.IndexOf("c.txt") != -1)
{
manifestanme = name;
break;
}
}
}
Stream stream = a.GetManifestResourceStream(manifestanme);
Thanks and +1 for Christian Hayter for this method : a.GetManifestResourceNames();
I need to construct the URL of a page in a String, to send it an email (as part of an email verification system). If i use the ~ symbol to denote the app root, it is taken literally.
The app will be deployed on a server on three different sites (on different ports) and each site can be accessed via 2 different URLs (one for LAn and one for internet).
So hardcoding the URL is out of question. I want to construct the url to verify.aspx in my application
Please help
You need this:
HttpContext.Current.Request.ApplicationPath
It's equivalent to "~" in a URL.
http://msdn.microsoft.com/en-us/library/system.web.httprequest.applicationpath.aspx
Unfortunately none of the methods listed generated the full url starting from http://---.
So i had to extract these from request.url. Something like this
Uri url=HttpContext.Current.Request.Url;
StringBuilder urlString = new StringBuilder();
urlString.Append(url.Scheme);
urlString.Append("://");
urlString.Append(url.Authority);
urlString.Append("/MyDesiredPath");
Can someone spot any potential problems with this?
Try:
HttpRequest req = HttpContext.Current.Request;
string url = req.Url.GetComponents(UriComponents.SchemeAndServer, UriFormat.SafeUnescaped)
+ ((req.ApplicationPath.Length > 1) ? req.ApplicationPath : "");
You need to put the URL as part of your web application's configuration. The web application does not know how it can be reached from the outside world.
E.g. consider a scenario where there's multiple proxies and load balancers in front of your web server... how would the web server know anything but its own IP?
So, you need to configure each instance of your web application by adding the base URL e.g. as an app setting in its web.config.
You can use HttpRequest.RawURL (docs here)property and base your URL on that, but if you are behind any kind of redirection, the RawURL may not reflect the actual URL of your application.
I ended up with this. I take the request url, and use the position of Request.ApplicationRoot to discover the left part of the uri. Should work with applications hosted in a virtual directory "/example" or in the root "/".
private string GetFullUrl(string relativeUrl)
{
if (string.IsNullOrWhiteSpace(relativeUrl))
throw new ArgumentNullException("relativeUrl");
if (!relativeUrl.StartsWith("/"))
throw new ArgumentException("url should start with /", "relativeUrl");
string current = Request.Url.ToString();
string applicationPath = Request.ApplicationPath;
int applicationPathIndex = current.IndexOf(applicationPath, 10, StringComparison.InvariantCultureIgnoreCase);
// should not be possible
if (applicationPathIndex == -1) throw new InvalidOperationException("Unable to derive root path");
string basePath = current.Substring(0, applicationPathIndex);
string fullRoot = string.Concat(
basePath,
(applicationPath == "/") ? string.Empty : applicationPath,
relativeUrl);
return fullRoot;
}
This has always worked for me:
string root = Request.Url.AbsoluteUri.Replace(Request.Url.PathAndQuery, "");
Basically I have some code to check a specific directory to see if an image is there and if so I want to assign a URL to the image to an ImageControl.
if (System.IO.Directory.Exists(photosLocation))
{
string[] files = System.IO.Directory.GetFiles(photosLocation, "*.jpg");
if (files.Length > 0)
{
// TODO: return the url of the first file found;
}
}
this is what i use:
private string MapURL(string path)
{
string appPath = Server.MapPath("/").ToLower();
return string.Format("/{0}", path.ToLower().Replace(appPath, "").Replace(#"\", "/"));
}
As far as I know, there's no method to do what you want; at least not directly. I'd store the photosLocation as a path relative to the application; for example: "~/Images/". This way, you could use MapPath to get the physical location, and ResolveUrl to get the URL (with a bit of help from System.IO.Path):
string photosLocationPath = HttpContext.Current.Server.MapPath(photosLocation);
if (Directory.Exists(photosLocationPath))
{
string[] files = Directory.GetFiles(photosLocationPath, "*.jpg");
if (files.Length > 0)
{
string filenameRelative = photosLocation + Path.GetFilename(files[0])
return Page.ResolveUrl(filenameRelative);
}
}
The problem with all these answers is that they do not take virtual directories into account.
Consider:
Site named "tempuri.com/" rooted at c:\domains\site
virtual directory "~/files" at c:\data\files
virtual directory "~/files/vip" at c:\data\VIPcust\files
So:
Server.MapPath("~/files/vip/readme.txt")
= "c:\data\VIPcust\files\readme.txt"
But there is no way to do this:
MagicResolve("c:\data\VIPcust\files\readme.txt")
= "http://tempuri.com/files/vip/readme.txt"
because there is no way to get a complete list of virtual directories.
I've accepted Fredriks answer as it appears to solve the problem with the least amount of effort however the Request object doesn't appear to conatin the ResolveUrl method.
This can be accessed through the Page object or an Image control object:
myImage.ImageUrl = Page.ResolveUrl(photoURL);
myImage.ImageUrl = myImage.ResolveUrl(photoURL);
An alternative, if you are using a static class as I am, is to use the VirtualPathUtility:
myImage.ImageUrl = VirtualPathUtility.ToAbsolute(photoURL);
This worked for me:
HttpContext.Current.Request.Url.GetLeftPart(UriPartial.Authority) + HttpRuntime.AppDomainAppVirtualPath + "ImageName";
Maybe this is not the best way, but it works.
// Here is your path
String p = photosLocation + "whatever.jpg";
// Here is the page address
String pa = Page.Request.Url.AbsoluteUri;
// Take the page name
String pn = Page.Request.Url.LocalPath;
// Here is the server address
String sa = pa.Replace(pn, "");
// Take the physical location of the page
String pl = Page.Request.PhysicalPath;
// Replace the backslash with slash in your path
pl = pl.Replace("\\", "/");
p = p.Replace("\\", "/");
// Root path
String rp = pl.Replace(pn, "");
// Take out same path
String final = p.Replace(rp, "");
// So your picture's address is
String path = sa + final;
Edit: Ok, somebody marked as not helpful. Some explanation: take the physical path of the current page, split it into two parts: server and directory (like c:\inetpub\whatever.com\whatever) and page name (like /Whatever.aspx). The image's physical path should contain the server's path, so "substract" them, leaving only the image's path relative to the server's (like: \design\picture.jpg). Replace the backslashes with slashes and append it to the server's url.
So far as I know there's no single function which does this (maybe you were looking for the inverse of MapPath?). I'd love to know if such a function exists. Until then, I would just take the filename(s) returned by GetFiles, remove the path, and prepend the URL root. This can be done generically.
The simple solution seems to be to have a temporary location within the website that you can access easily with URL and then you can move files to the physical location when you need to save them.
For get the left part of the URL:
?HttpContext.Current.Request.Url.GetLeftPart(UriPartial.Authority)
"http://localhost:1714"
For get the application (web) name:
?HttpRuntime.AppDomainAppVirtualPath
"/"
With this, you are available to add your relative path after that obtaining the complete URL.
I think this should work. It might be off on the slashes. Not sure if they are needed or not.
string url = Request.ApplicationPath + "/" + photosLocation + "/" + files[0];