I find when reading from a local file from Silverlight, we have to use special path separator "/" other than normal path separator "\" or else Silverlight can not get related local file, for example we need to write as c:/test/abc.wmv, other than write as c:\test\abc.wmv.
Two more questions,
Any simple solution to use normal file separator?
C# File/FileInfo class will use normal path separator to represent a file name (full path name), how to change all the normal path separator into this special path separator so that Silverlight could recognize?
I am using VSTS 2008 + C# + .Net 2.0.
thanks in advance,
George
You could use an Extension Method:
public string ToSilverlightPath(this string s)
{
return s.Replace("\\", "/");
}
or
public string ToSilverlightPath(this Path p)
{
return p.GetFullPath().Replace("\\", "/");
}
Edit:
After thinking about it some more Silverlight probably works with URIs'.
That is, all paths in Silverlight are URIs'.
So instead of using Path you should probably use Uri, like:
Uri mySilverlightPath = new Uri(myPathString);
or
Uri mySilverlightPath = new Uri(myPath.GetFullPath());
Not sure about this though but I guess it would make sense.
Related
I have xml files that contain href file paths to images (e.g. "....\images\image.jpg"). The hrefs contain relative paths. Now, I need to extract the hrefs to the images and turn them into absolute paths in the file system.
I know about the GetFullPath method, but I tried it and it only seems to work from the CurrentDirectory set, which appears to be C: so I don't see how I could use that. And still, I have the absolute path of the file containing the hrefs, and the href relative paths, so since it is a simple task for me to count back the number of "....\" parts based on the absolute path of the containing file, it seems there must be a way to do this programmatically as well.
I'm hoping there's some simple method I just don't know about! Any ideas?
string exactPath = Path.GetFullPath(yourRelativePath);
works
Assuming you know the real directory the XML file lives in use Path.Combine, e.g.
var absolute_path = Path.Combine(directoryXmlLivesIn, "..\images\image.jpg");
If you want to get back the full path with any ..'s collapsed then you can use:
Path.GetFullPath((new Uri(absolute_path)).LocalPath);
This worked.
var s = Path.Combine(#"C:\some\location", #"..\other\file.txt");
s = Path.GetFullPath(s);
It`s best way for convert the Relative path to the absolute path!
string absolutePath = System.IO.Path.GetFullPath(relativePath);
You can use Path.Combine with the "base" path, then GetFullPath on the results.
string absPathContainingHrefs = GetAbsolutePath(); // Get the "base" path
string fullPath = Path.Combine(absPathContainingHrefs, #"..\..\images\image.jpg");
fullPath = Path.GetFullPath(fullPath); // Will turn the above into a proper abs path
Have you tried Server.MapPath method. Here is an example
string relative_path = "/Content/img/Upload/Reports/59/44A0446_59-1.jpg";
string absolute_path = Server.MapPath(relative_path);
//will be c:\users\.....\Content\img\Upload\Reports\59\44A0446_59-1.jpg
This worked for me.
//used in an ASP.NET MVC app
private const string BatchFilePath = "/MyBatchFileDirectory/Mybatchfiles.bat";
var batchFile = HttpContext.Current.Server.MapPath(BatchFilePath);
Take a look at Path.Combine
http://msdn.microsoft.com/en-us/library/fyy7a5kt.aspx
I realized that my code has a lot of paths of the form C:\folder\pathtofile, and I was wondering what is typically done to allow code to be usable under different file systems?
I was hoping there was some environment property I could check in C# that would give me either forward slash or backslash in order to create new path strings.
Use the commands Path.Combine to combine strings together using the path separator or if you need more manual control Path.DirectorySeparatorChar will give you the platform specific character.
public static string GetConfigFilePath()
{
//Returns "C:\Users\{Username}\AppData\Roaming"
// or "C:/Users/{Username}/AppData/Roaming" depending on CLR running.
var appData = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
//Returns "C:\Users\{Username}\AppData\Roaming\MyProgramName\MyConfigFile.xml"
// or "C:/Users/{Username}/AppData/Roaming/MyProgramName/MyConfigFile.xml" depending on CLR running.
var configPath = Path.Combine(appData, "MyProgramName", "MyConfigFile.xml");
return configPath;
}
I am wondering how to remove the version number from a file path in a Windows Form Application.
Currently I wish to save some users application data to a .xml file located in the roaming user profile settings.
To do this I use:
get
{
return Application.UserAppDataPath + "\\FileName.xml";
}
However this returns the following string:
C:\Users\user\AppData\Roaming\folder\subfolder\1.0.0.0\FileName.xml
and I was wondering if there is a non-hack way to remove the version number from the file path so the file path looks like this:
C:\Users\user\AppData\Roaming\folder\subfolder\FileName.xml
Besides parsing the string looking for the last "\", I do not know what to do.
Thanks
Use Directory.GetParent method for this purpose.
get
{
var dir = Directory.GetParent(Application.UserAppDataPath);
return Path.Combine(dir.FullName, "FileName.xml");
}
Also note that I've used Path.Combine instead of concatenating paths, this method helps you to avoid so many problems. Never concatenate strings to create path.
I use asp.net 4 and c#.
I have this code that allow me to find the physical path for an image.
As you can see I get my machine physical pagh file:///C:.
string pathRaw = HttpContext.Current.Request.PhysicalApplicationPath + "Statics\\Cms\\Front-End\\Images\\Raw\\";
Result:
file:///C:/......../f005aba1-e286-4d9e-b9db-e6239f636e63.jpg
But I need display this image at the Front end of my web application so I would need a result like this:
http://localhost:1108/Statics/Cms/Front-End/Images/Raw/f005aba1-e286-4d9e-b9db-e6239f636e63.jpg
How to do it?
PS: I need to convert the result of variable pathRaw.
Hope I was able to express myself unfortunately I'm not sure about terminology in this case.
Thanks for your help!
The easiest thing to do is get rid of the physical application path.
If you cannot do that in your code, just strip it off the pathRaw variable. Like this:
public string GetVirtualPath( string physicalPath )
{
if ( !physicalPath.StartsWith( HttpContext.Current.Request.PhysicalApplicationPath ) )
{
throw new InvalidOperationException( "Physical path is not within the application root" );
}
return "~/" + physicalPath.Substring( HttpContext.Current.Request.PhysicalApplicationPath.Length )
.Replace( "\\", "/" );
}
The code first checks to see if the path is within the application root. If not, there's no way to figure out a url for the file so an exception is thrown.
The virtual path is constructed by stripping off the physical application path, convert all back-slashes to slashes and prefixing the path with "~/" to indicate it should be interpreted as relative to the application root.
After that you can convert the virtual path to a relative path for output to a browser using ResolveClientUrl(virtualPath).
Get the root of your application using Request.ApplicationPath
then use the answer from this question to get a relative path.
It might need a bit of tweaking but it should allow you to do what you're after.
Left-strip your pathRaw content by the Request.ApplicationPath and construct the url using
Uri navigateUri = new Uri(System.Web.HttpContext.Current.Request.Url, relativeDocumentPath);
Make use of
ApplicationPath - Gets the ASP.NET application's virtual application root path on the server.
Label1.Text = Request.ApplicationPath;
Image1.ImageUrl = Request.ApplicationPath + "/images/Image1.gif";
You can use Server.MapPath for this.
string pathRaw = System.Web.HttpContext.Current.Server.MapPath(“somefile.jpg“);
I have xml files that contain href file paths to images (e.g. "....\images\image.jpg"). The hrefs contain relative paths. Now, I need to extract the hrefs to the images and turn them into absolute paths in the file system.
I know about the GetFullPath method, but I tried it and it only seems to work from the CurrentDirectory set, which appears to be C: so I don't see how I could use that. And still, I have the absolute path of the file containing the hrefs, and the href relative paths, so since it is a simple task for me to count back the number of "....\" parts based on the absolute path of the containing file, it seems there must be a way to do this programmatically as well.
I'm hoping there's some simple method I just don't know about! Any ideas?
string exactPath = Path.GetFullPath(yourRelativePath);
works
Assuming you know the real directory the XML file lives in use Path.Combine, e.g.
var absolute_path = Path.Combine(directoryXmlLivesIn, "..\images\image.jpg");
If you want to get back the full path with any ..'s collapsed then you can use:
Path.GetFullPath((new Uri(absolute_path)).LocalPath);
This worked.
var s = Path.Combine(#"C:\some\location", #"..\other\file.txt");
s = Path.GetFullPath(s);
It`s best way for convert the Relative path to the absolute path!
string absolutePath = System.IO.Path.GetFullPath(relativePath);
You can use Path.Combine with the "base" path, then GetFullPath on the results.
string absPathContainingHrefs = GetAbsolutePath(); // Get the "base" path
string fullPath = Path.Combine(absPathContainingHrefs, #"..\..\images\image.jpg");
fullPath = Path.GetFullPath(fullPath); // Will turn the above into a proper abs path
Have you tried Server.MapPath method. Here is an example
string relative_path = "/Content/img/Upload/Reports/59/44A0446_59-1.jpg";
string absolute_path = Server.MapPath(relative_path);
//will be c:\users\.....\Content\img\Upload\Reports\59\44A0446_59-1.jpg
This worked for me.
//used in an ASP.NET MVC app
private const string BatchFilePath = "/MyBatchFileDirectory/Mybatchfiles.bat";
var batchFile = HttpContext.Current.Server.MapPath(BatchFilePath);
Take a look at Path.Combine
http://msdn.microsoft.com/en-us/library/fyy7a5kt.aspx