Develop Reference

How to set a specific location to a string in C#

How do I go about getting the info from the computers name and setting that location in a string.
Example*
string contents = File.ReadAllText(#"C:\Users\" + Settings.Default.User + "\\Documents\\My vs\\juice.txt");
Problem is, I cannot use the Setting.Default.User location because that name constantly changes.
I need that section to be some kind of variable that means the computers name....
I don't wanna just hard code in my computers name either because If I put this on my other computers then obviously the name would change

you are looking for Environment class:
you can use Environment.MachineName Property
Anyway if you need a special folder path you can use: Environment.GetFolderPath
there you can find all the special folder available Environment.SpecialFolder Enumeration

You can use the Environment.GetFolderPath method, e.g.:
var folder = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
var path = System.IO.Path.Combine(folder, "My vs\\juice.txt");
string contents = File.ReadAllText(path);

You are looking for... Environment.MachineName

You want to use Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) as documented here http://msdn.microsoft.com/en-us/library/system.environment.specialfolder(v=vs.110).aspx

Directory Configuration in C#

I would like to read from a htm file, that is located to the following directory:
C:\Users\**NAME**\AppData\Roaming\Microsoft\Signatures
How can I change the path, so that I can use it from another computer, where the user name is not equal to the one above?
DirectoryInfo directoryInfo = new DirectoryInfo(Environment.SpecialFolder.ApplicationData + #"Roaming\Microsoft\Signatures");

Environment.SpecialFolder is an enumeration, you need to call GetFolderPath to get the actual path. Also ApplicationData includes the "Roaming" part, so you don't need that
Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + #"\Microsoft\Signatures"

Try this:
Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData,Environment.SpecialFolderOption.None) + #"\Microsoft\Signatures"
Check also the possibility of parameter Environment.SpecialFolderOption

Folder path before project

I am trying to get a folder path in my C drive that I did not want to hard code with my program.
I know that I can use string path = System.AppDomain.CurrentDomain.BaseDirectory; However its give me : C:\FACE\Camera\Camera\bin\Debug . Which I want to only have C:\FACE\ as I want to initialise something in the FACE folder but outside of my Camera folder. I do not wish to hardcode the file path. Is it possible to do it? Thanks for the help!

You could use the method Directory.GetParent for this purpose:
Directory.GetParent("here you will pass you path");
Update
For your case, you could take that you want as below:
string projectPath = Directory.GetParent(Directory.GetCurrentDirectory()).Parent.FullName;
string solutionPath = Directory.GetParent(projectPath).Parent.FullName;
string basePath = Directory.GetParent(solutionPath).FullName;
The variable basePath contains that you want.

System.AppDomain.CurrentDomain.BaseDirectory always returns the path of executable assembly.You can use DTE if you are using web application

How do I access special directories in Windows?

What is the C# syntax to retrieve the user's desktop, documents folder and other system folders on Windows?

You can use Environment.GetFolderPath with the Environment.SpecialFolder enumeration. For example:
string desktopPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);

Use:
string folder = Environment.GetFolderPath(Environment.SpecialFolder.*);
Where * is one of the enum values.

System.Environment.SpecialFolder.MyComputer
etc.

Use Environment.GetFolderPath Method

How can i get the path of the current user's "Application Data" folder?

1)how can i find out the Windows Installation drive in which the user is working.? I need this to navigate to the ApplicationData in DocumentsandSettings.
2)Also how can i get the user name too so that i can goto ApplicaitionData.? Eg: "D:\Documents and Settings\user\Application Data".

Look at combining Environment.GetFolderPath and Environment.SpecialFolder to do this.
Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)

Depending on what you are doing you might also want to look at
Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)
If the user is on a domain it will only be stored in their local AppData folder and not synced with their roaming profile.

Have a look at the Environment.SpecialFolders
Environment.SpecialFolder.ApplicationData;
Environment.SpecialFolder.System
that should get you round the username requirement as well.

Have a look at the System.Environment class and its properties and methods, e.g:
string systemDir = System.Environment.SystemDirectory;
string docs = System.Environment.GetFolderPath(
System.Environment.SpecialFolder.MyDocuments));
string systemDrive = System.IO.Path.GetPathRoot(systemDir);
The first one returns "C:\Windows\system32" for example and the second one "C:\Documents and Settings\USERNAME\My Documents".

Try this:
string filePath = Environment.GetFolderPath(System.Environment.SpecialFolder.ApplicationData);

1)how can i find out the Windows Installation drive in which the user
is working.?
var systemDrive = Environment.ExpandEnvironmentVariables("%systemdrive%");
I need this to navigate to the ApplicationData in
DocumentsandSettings.
You don't really require to fetch the value of either system drive or currently logged in user name to achieve this. There are predefined environment variables %localAppData% and %appData% which give you fully qualified path of these directories as shown in the code below:
var localApplicationData = Environment.ExpandEnvironmentVariables("%localappdata%");
//this gives C:\Users\<userName>\AppData\Local
var roamingApplicationData = Environment.ExpandEnvironmentVariables("%appdata%");
//this gives C:\Users\<userName>\AppData\Roaming
2)Also how can i get the user name too so that i can goto
ApplicaitionData.? Eg: "D:\Documents and Settings\user\Application
Data".
Again, you don't need user name to get the application data path as I've discussed above. Still, for the sake of knowledge you can fetch it from %username% environment variable as shown below:
var currentUserName = Environment.ExpandEnvironmentVariables("%username%");