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How to get Windows\system32\config\systemprofile\AppData\Local\ folder path in C#?

What is the best way to get this folder path programmatically :
Windows\system32\config\systemprofile\AppData\Local ?

Sample code
HttpContext.Current.Server.MapPath();
System.Web.Hosting.HostingEnvironment.ApplicationPhysicalPath;

I can't write comments sorry. What are you using the path for? Where is the application stored? This will get you there??
string path = "C:\\Windows\system32\config\systemprofile\AppData\Local";
Provided C: is the name of the drive.
You really need to expand on your question a little bit.
Is this a duplicate question??
How to read existing text files without defining path

I think you can use Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData
In my project like this
string configPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData), "MyProject", "SERVICER", "config.ini");
It get Application Data Directory for all user ( contain System, Service, Guest,... ). I use it for save config of Service!!

You can get the path this way:
Environment.GetFolderPath(System.Environment.SpecialFolder.LocalApplicationData)

How get file from a directory using relative path?

I am pretty new in C# and I am finding some difficulties trying to retrieve a jpg file that is into a directory of my project.
I have the following situation:
I have a Solution that is named MySolution, inside this solution there are some projects including a project named PdfReport. Inside this project there is a folder named Shared and inside this folder there is an header.jpg file.
Now if I want to obtain the list of all files that are inside the Shared directory (that as explained is a directory inside my project) I can do something like this:
string[] filePaths = Directory.GetFiles(#"C:\Develop\EarlyWarning\public\Implementazione\Ver2\PdfReport\Shared\");
and this work fine but I don't want use absolute path but I'd rather use a relative path relative to the PdfReport project.
I am searching a solution to do that but, untill now, I can't found it. Can you help me to do that?

Provided your application's Executable Path is "C:\Develop\EarlyWarning\public\Implementazione\Ver2", you can access the PdfReport\Shared folder as
string exePath = System.IO.Path.GetDirectoryName(Application.ExecutablePath);
string sharedPath = Path.Combine(exePath, "PdfReport\\Shared\\");
string[] filePaths = Directory.GetFiles(sharedPath);

Try to get the current folder by using this
Server.MapPath(".");
In a non ASP.NET application but WinForms or Console or WPF application you should use
AppDomain.CurrentDomain.BaseDirectory

If you want root relative, you can do this (assuming C:\Develop\EarlyWarning is site root)
string[] filePaths = Directory.GetFiles(Server.MapPath("~/public/Implementazione/Ver2/PdfReport/Shared"));
Or if you want plain relative,
//assuming you're in the public folder
string[] filePathes = Directory.GetFiles(Server.MapPath("/Implementazione/Ver2/PdfReport/Shared"));
Root relative is usually best in my experience, in case you move the code around.

You can right click on your file header.jpg, choose Properties, and select for example the option Copy always on the property "Copy to Output Directory".
Then a method like this, in any class that belongs to project PdfReport:
public string[] ReadFiles()
{
return Directory.GetFiles("Shared");
}
will work well.
Alternatively, if you have files that never change at runtime and you want to have access to them inside the assembly you also can embed: http://support.microsoft.com/kb/319292/en-us

Converting absolute path to relative path C# [duplicate]

This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Getting path relative to the current working directory?
I have code in C# that includes some images from an absolute path to a relative so the image can be found no matter where the application fold is located.
For example the path in my code (and in my laptop for the image) is
C:/something/res/images/image1.jpeg
and I want the path in my code to be
..../images/image1.jpeg
So it can run wherever the folder is put, whatever the name of the C: partition is etc.
I want to have a path in my code which is independant of the application folder location or if it is in another partition, as long as it is in the same folder as the the rest of the solution.
I have this code:
try
{
File.Delete("C:/JPD/SCRAT/Desktop/Project/Resources/images/image1.jpeg");
}
catch (Exception)
{
MessageBox.Show("File not found:C:/Users/JPD/Desktop/Project/images/image1.jpeg");
}
This code only runs if the file and folder are in that certain path, (which is also the location of the code) I wish for that path to be relative so wherever I put the whole folder (code, files etc) the program will still work as long as the code (which is under project folder) is at the same location with the folder images... what should I do?

Relative paths are based from the binary file from which your application is running. By default, your binary files will be outputted in the [directory of your .csproj]/bin/debug. So let's say you wanted to create your images folder at the same level as your .csproj. Then you could access your images using the relative path "../../images/someImage.jpg".
To get a better feel for this, try out the following as a test:
1) create a new visual studio sample project,
2) create an images folder at the same level as the .csproj
3) put some files in the images folder
4) put this sample code in your main method -
static void Main(string[] args)
{
Console.WriteLine(Directory.GetCurrentDirectory());
foreach (string s in Directory.EnumerateFiles("../../images/"))
{
Console.WriteLine(s);
}
Console.ReadLine(); // Just to keep the console from disappearing.
}
You should see the relative paths of all the files you placed in step (3).

see: Getting path relative to the current working directory?
Uri uri1 = new Uri(#"c:\foo\bar\blop\blap");
Uri uri2 = new Uri(#"c:\foo\bar\");
string relativePath = uri2.MakeRelativeUri(uri1).ToString();

Depending on the set up of your program, you might be able to simply use a relative path by skipping a part of the full path string. It's not braggable, so J. Skit might be up my shiny for it but I'm getting the impression that you simply want to make it work. Beauty being a later concern.
String absolutePath = #"c:\beep\boop\HereWeStart\hopp.gif";
String relativePath = absolutePath.Substring(13);
You could then, if you need/wish, exchange the number 13 (which is an ugly and undesirable approach, still working, though) for a dynamically computed one. For instance (assuming that the directory "HereWeStart", where your relative path is starting, is the first occurrence of that string in absolutePath) you could go as follows.
String absolutePath = #"c:\beep\boop\HereWeStart\hopp.gif";
int relativePathStartIndex = absolutePath.IndexOf("HereWeStart");
String relativePath = absolutePath.Substring(relativePathStartIndex);
Also, your question begs an other question. I'd like to know how you're obtaining the absolute path. Perhaps there's an even more clever way to avoid the hustle all together?
EDIT
You could also try the following approach. Forget the Directory class giving you an absolute path. Go for the relative path straight off. I'm assuming that all the files you're attempting to remove are in the same directory. If not, you'll need to add some more lines but we'll cross that bridge when we get there.
Don't forget to mark an answer as green-checked (or explain what's missing or improvable still).
String
deletableTarget = #"\images\image1.jpeg",
hereWeAre = Environment.CurrentDirectory;
MessageBox.Show("The taget path is:\n" + hereWeAre + deletableTarget);
try
{ File.Delete(hereWeAre + deletableTarget); }
catch (Exception exception)
{ MessageBox.Show(exception.Message); }
Also, please note that I took the liberty of changing your exception handling. While yours is working, it's a better style to rely on the built-in messaging system. That way you'll get more professionally looking error messages. Not that we ever get any errors at run-time, right? ;)

Htmlfile access is denied when using Server.MapPath

I have been using Server.MapPath("page.aspx") for quite a long time, but it is just now that I faced this problem.
Basically here is my code
Session.Clear();
ShowLoggedOffControl(); //A function that setup bunch of controls visibility
OnUserLoggedOut(new EventArgs());
Response.Redirect(Server.MapPath("~/Default.aspx"));
The error would be htmlfile:access is denied at javascript execution. However when I removed Server.MapPath so that it became like this Response.Redirect("~/Default.aspx");, things work normally.
What did I do wrong? Why, how and when can I use Server.MapPath?
Thanks.

Server.MapPath maps the specified relative or virtual path to the corresponding physical directory on the server. So in your example it would end up redirecting to something like this:
c:\Projects\MyWebsite\Default.aspx
which is probably not what you want.
Response.Redirect on the other hand will resolve the '~' to the relative path root for you and resolve to something like this:
/MyVirtualDirectory/Default.aspx
As for when you would want to use Server.MapPath, you would use it if you wanted to actually find the file on the server and do something such as:
var lines = System.IO.File.ReadAllLines(Server.MapPath("~/MyTextFile.txt"));
// Do something here with values found

Server.MapPath gets the physical path to the file on the hard disk, whereas Response.Redirect expects a URL.
If for some reason you need to get the full URL, you can use this:
String.Format("http://{0}{1}", Request.Url.Host, Page.ResolveUrl(relativeUrl));

Load local HTML file in a C# WebBrowser

In my app I have a WebBrowser element.
I would like to load a local file in it.
I have some questions:
Where to place the HTML file (so that it will also be installed if a user executes the setup)
how to reference the file? (e.g. my guess is the user's installation folder would not always be the same)
EDIT
I've added the HTML file to my project.
And I have set it up so that it gets copied to output folder.
When I check it it is present when run: \bin\Debug\Documentation\index.html
However when I do the following I get a 'Page cannot be displayed' error in the webbrowser element.
I use the following code to try to display the HTML file in the Webbrowser.
webBrowser1.Navigate(#".\Documentation\index.html");

Do a right click->properties on the file in Visual Studio.
Set the Copy to Output Directory to Copy always.
Then you will be able to reference your files by using a path such as #".\my_html.html"
Copy to Output Directory will put the file in the same folder as your binary dlls when the project is built. This works with any content file, even if its in a sub folder.
If you use a sub folder, that too will be copied in to the bin folder so your path would then be #".\my_subfolder\my_html.html"
In order to create a URI you can use locally (instead of served via the web), you'll need to use the file protocol, using the base directory of your binary - note: this will only work if you set the Copy to Ouptut Directory as above or the path will not be correct.
This is what you need:
string curDir = Directory.GetCurrentDirectory();
this.webBrowser1.Url = new Uri(String.Format("file:///{0}/my_html.html", curDir));
You'll have to change the variables and names of course.

quite late but it's the first hit i found from google
Instead of using the current directory or getting the assembly, just use the Application.ExecutablePath property:
//using System.IO;
string applicationDirectory = Path.GetDirectoryName(Application.ExecutablePath);
string myFile = Path.Combine(applicationDirectory, "Sample.html");
webMain.Url = new Uri("file:///" + myFile);

Note that the file:/// scheme does not work on the compact framework, at least it doesn't with 5.0.
You will need to use the following:
string appDir = Path.GetDirectoryName(
Assembly.GetExecutingAssembly().GetName().CodeBase);
webBrowser1.Url = new Uri(Path.Combine(appDir, #"Documentation\index.html"));

Place it in the Applications setup folder or in a separte folder beneath
Reference it relative to the current directory when your app runs.

Somewhere, nearby the assembly you're going to run.
Use reflection to get path to your executing assembly, then do some magic to locate your HTML file.
Like this:
var myAssembly = System.Reflection.Assembly.GetEntryAssembly();
var myAssemblyLocation = System.IO.Path.GetDirectoryName(a.Location);
var myHtmlPath = Path.Combine(myAssemblyLocation, "my.html");

What worked for me was
<WebBrowser Source="pack://siteoforigin:,,,/StartPage.html" />
from here. I copied StartPage.html to the same output directory as the xaml-file and it loaded it from that relative path.

Windows 10 uwp application.
Try this:
webview.Navigate(new Uri("ms-appx-web:///index.html"));

Update on #ghostJago answer above
for me it worked as the following lines in VS2017
string curDir = Directory.GetCurrentDirectory();
this.webBrowser1.Navigate(new Uri(String.Format("file:///{0}/my_html.html", curDir)));

I have been trying different answers from here, but managed to derive something working, here it is:
1- Added the page in a folder i created at project level named WebPagesHelper
2- To have the page printed by webBrowser Control,
string curDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase);
var uri = new Uri(curDirectory);
string myFile = Path.Combine(uri.AbsolutePath, #"WebPagesHelper\index.html");
Uri new_uri = new Uri(myFile);
i had to get the assembly path, create a first uri to get an absolute path without the 'file://' attached, next i combined this absolute path with a relative path to the page in its folder, then made another URI from the result.
Then pass this to webBrowser URL property webBrowser.URL = new_uri;