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The given path's format is not supported in windows app

I tried to get file path using below code.
string script = File.ReadAllText(Application.StartupPath + "D:\\Tax Rouding Projects\\10-12-12 TaxRoundingUtility\\TaxRoundingUtility\\Scripts\\GP_SOP_AdjustTax.sql");
But i am getting error : The given path's format is not supported
if i try to open the file from windows explorer.. i am able to go file location..
D:\Tax Rouding Projects\10-12-12 TaxRoundingUtility\TaxRoundingUtility\Scripts\
But why i cannot using c# code...
Any thing i missed in the path...

The problem lies here
Application.StartupPath + "D:\Tax Rouding Projects\10-12-12 TaxRoundingUtility\TaxRoundingUtility\Scripts\GP_SOP_AdjustTax.sql"
This might end up giving you something like
"c:\program files\myappfolder\D:\Tax Rouding Projects\10-12-12
TaxRoundingUtility\TaxRoundingUtility\Scripts\GP_SOP_AdjustTax.sql"
which is an invalid path. Append only portion of path that you need like (the second part is just an example)
Application.StartupPath + #"\TaxRoundingUtility\Scripts\GP_SOP_AdjustTax.sql".
Also make sure to escape the '\' in your file path strings.
Edit: As Dante has mentioned in the comment in the question, If your target path is fixed and known, you do not need the Application.StartppPath. Just load/read the file for which you have the complete path.

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? ;)

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;

Open a text file with WPF

There is a text file that I have created in my project root folder. Now, I am trying to use Process.Start() method to externally launch that text file.
The problem I have got here is that the file path is incorrect and Process.Start() can't find this text file. My code is as follows:
Process.Start("Textfile.txt");
So how should I correctly reference to that text file? Can I use the relative path instead of the absolute path? Thanks.
Edit:
If I change above code to this, would it work?
string path = Assembly.GetExecutingAssembly().Location;
Process.Start(path + "/ReadMe.txt");

Windows needs to know where to find the file, so you need somehow specify that:
Either using absolute path:
Process.Start("C:\\1.txt");
Or set current directory:
Environment.CurrentDirectory = "C:\\";
Process.Start("1.txt");
Normally CurrentDirectory is set to the location of the executable.
[Edit]
If the file is in the same directory where executable is you can use the code like this:
var directory = Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
var file = Path.Combine(directory, "1.txt");
Process.Start(file);

The way you are doing this is fine. This will find the text file that is in the same directory as your exe and it will open it with the default application (probably notepad.exe). Here are more examples of how to do this:
http://www.dotnetperls.com/process-start
However, if you want to put a path in, you have to use the full path. You can build the full path while only caring about the relative path using the method listed in this post:
http://social.msdn.microsoft.com/Forums/en-US/vbgeneral/thread/e763ae8c-1284-43fe-9e55-4b36f8780f1c
It would look something like this:
string pathPrefix;
if(System.Diagnostics.Debugger.IsAttached())
{
pathPrefix = System.IO.Path.GetFullPath(Application.StartupPath + "\..\..\resources\");
}
else
{
pathPrefix = Application.StartupPath + "\resources\";
}
Process.Start(pathPrefix + "Textfile.txt");
This is for opening a file in a folder you add to your project called resources. If you want it in your project root, just drop off the resources folder in the above two strings and you will be good to go.

You'll need to know the current directory if you want to use a relative path.
System.Envrionment.CurrentDirectory
You could append that to your path with Path
System.IO.Path.Combine(System.Envrionment.CurrentDirectory, "Textfile.txt")

Try using Application.StartupPath path as default path may point to current directory.
This scenario has been explained on following links..
Environment.CurrentDirectory in C#.NET
http://start-coding.blogspot.com/2008/12/applicationstartuppath.html

On a windows box:
Start notepad with the file's location immediately following it. WIN
process.start("notepad C:\Full\Directory\To\File\FileName.txt");

Server.MapPath - Physical path given, virtual path expected

I'm using this line of code:
var files = Directory.GetFiles(Server.MapPath("E:\\ftproot\\sales"));
to locate files in a folder however I get the error message saying that
"Physical Path given but virtual path
expected".
Am new enough to using System.IO in C# so I was wondering if it's possible to enter a physical path to do this?

if you already know your folder is: E:\ftproot\sales then you do not need to use Server.MapPath, this last one is needed if you only have a relative virtual path like ~/folder/folder1 and you want to know the real path in the disk...

var files = Directory.GetFiles(#"E:\ftproot\sales");