The location does not have to be 'Download', but that directory was easily enough mapped by my desktop computer's file system browser upon plugging in the USB connector. In fact, that's how I installed the Terminal Emulator - by putting the apk file (and for several other 'side load' apps) into Download and then telling Android to install them. Now, open the Microsoft Store app and navigate to the app you want to download an APPX file for. Don’t click the Install button. First, head back to Fiddler and go to FileCapture Traffic to start capturing network traffic. Now return to the Microsoft Store app and click the Install button. Wait until the app starts downloading. And want to use those links to do the downloads in sum i want to Check if file exists, if not download, and get its path to use later. C# xaml windows-phone-8 windows-phone file-transfer. SuperUser reader Dr. John A Zoidberg wants to know how to change the Windows’ default download path: I would like to keep my drive paths as clean as possible and C: Downloads is much nicer than C: Users Myname Downloads.

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Members of many of the types in the System.IO namespace include a path parameter that lets you specify an absolute or relative path to a file system resource. This path is then passed to Windows file system APIs. This topic discusses the formats for file paths that you can use on Windows systems.

Traditional DOS paths

A standard DOS path can consist of three components:

A volume or drive letter followed by the volume separator (:).
A directory name. The directory separator character separates subdirectories within the nested directory hierarchy.
An optional filename. The directory separator character separates the file path and the filename.

If all three components are present, the path is absolute. If no volume or drive letter is specified and the directory name begins with the directory separator character, the path is relative from the root of the current drive. Otherwise, the path is relative to the current directory. The following table shows some possible directory and file paths.

Path	Description
`C:DocumentsNewslettersSummer2018.pdf`	An absolute file path from the root of drive `C:`.
`Program FilesCustom UtilitiesStringFinder.exe`	An absolute path from the root of the current drive.
`2018January.xlsx`	A relative path to a file in a subdirectory of the current directory.
`..PublicationsTravelBrochure.pdf`	A relative path to file in a directory that is a peer of the current directory.
`C:Projectsapilibraryapilibrary.sln`	An absolute path to a file from the root of drive `C:`.
`C:Projectsapilibraryapilibrary.sln`	A relative path from the current directory of the `C:` drive.

Important

Note the difference between the last two paths. Both specify the optional volume specifier (C: in both cases), but the first begins with the root of the specified volume, whereas the second does not. As result, the first is an absolute path from the root directory of drive C:, whereas the second is a relative path from the current directory of drive C:. Use of the second form when the first is intended is a common source of bugs that involve Windows file paths.

You can determine whether a file path is fully qualified (that is, it the path is independent of the current directory and does not change when the current directory changes) by calling the Path.IsPathFullyQualified method. Note that such a path can include relative directory segments (. and ..) and still be fully qualified if the resolved path always points to the same location.

The following example illustrates the difference between absolute and relative paths. It assumes that the directory D:FY2018 exists, and that you haven't set any current directory for D: from the command prompt before running the example.

If you would like to see code comments translated to languages other than English, let us know in this GitHub discussion issue.

UNC paths

Universal naming convention (UNC) paths, which are used to access network resources, have the following format:

A server or host name, which is prefaced by . The server name can be a NetBIOS machine name or an IP/FQDN address (IPv4 as well as v6 are supported).
A share name, which is separated from the host name by . Together, the server and share name make up the volume.
A directory name. The directory separator character separates subdirectories within the nested directory hierarchy.
An optional filename. The directory separator character separates the file path and the filename.

The following are some examples of UNC paths:

Path	Description
`system07C$`	The root directory of the `C:` drive on `system07`.
`Server2ShareTestFoo.txt`	The `Foo.txt` file in the Test directory of the `Server2Share` volume.

UNC paths must always be fully qualified. They can include relative directory segments (. and ..), but these must be part of a fully qualified path. You can use relative paths only by mapping a UNC path to a drive letter.

DOS device paths

The Windows operating system has a unified object model that points to all resources, including files. These object paths are accessible from the console window and are exposed to the Win32 layer through a special folder of symbolic links that legacy DOS and UNC paths are mapped to. This special folder is accessed via the DOS device path syntax, which is one of:

.C:TestFoo.txt?C:TestFoo.txt

In addition to identifying a drive by its drive letter, you can identify a volume by using its volume GUID. This takes the form:

.Volume{b75e2c83-0000-0000-0000-602f00000000}TestFoo.txt?Volume{b75e2c83-0000-0000-0000-602f00000000}TestFoo.txt

Note

DOS device path syntax is supported on .NET implementations running on Windows starting with .NET Core 1.1 and .NET Framework 4.6.2.

The DOS device path consists of the following components:

The device path specifier (. or ?), which identifies the path as a DOS device path.
Note
The ? is supported in all versions of .NET Core and .NET 5+ and in .NET Framework starting with version 4.6.2.
A symbolic link to the 'real' device object (C: in the case of a drive name, or Volume{b75e2c83-0000-0000-0000-602f00000000} in the case of a volume GUID).
The first segment of the DOS device path after the device path specifier identifies the volume or drive. (For example, ?C: and .BootPartition.)
There is a specific link for UNCs that is called, not surprisingly, UNC. For example:
.UNCServerShareTestFoo.txt?UNCServerShareTestFoo.txt
For device UNCs, the server/share portion forms the volume. For example, in ?server1e:utilitiesfilecomparer, the server/share portion is server1utilities. This is significant when calling a method such as Path.GetFullPath(String, String) with relative directory segments; it is never possible to navigate past the volume.

DOS device paths are fully qualified by definition. Relative directory segments (. and ..) are not allowed. Current directories never enter into their usage.

Example: Ways to refer to the same file

The following example illustrates some of the ways in which you can refer to a file when using the APIs in the System.IO namespace. The example instantiates a FileInfo object and uses its Name and Length properties to display the filename and the length of the file.

Path normalization

Almost all paths passed to Windows APIs are normalized. During normalization, Windows performs the following steps:

Identifies the path.
Applies the current directory to partially qualified (relative) pat

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