Table of Contents
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If you have access to your system’s asp.net filesystem, this guide should help you.
- 10 handling units read
ASP.NET Core abstracts the file system by taking advantage of file providers. Suppliers used Files are used throughout the ASP.NET Core platform. For example:
- IWebHostEnvironment makes content root and therefore webroot as type
ifileprovider . - Static File Middleware provides a vendor file for finding static files.
- Razor requirements file for vendors also looks for pages in addition to views.
- .NET Core Tools use file providers or global templates to specify which files to publish.
The
File Provider Interfaces
- Get the information file ( IFileInfo ).
- Get information about the submit page ( IDirectoryContents ).
- Customize notification change (with better IChangeToken ).
- Exists
- IsDirectory
- Name
- Length (Bytes)
- Last Modified Date
FileP Sample Software ApplicationroviderSample
shows how a file provider is configured in Startup.ConfigureServices
for an entire software application using Dependency Injection .
File Provider Implementations
Physical File Provider
PhysicalFileProvider provides access to the physical technology file. PhysicalFileProvider
uses System.IO.File (for the physical provider) and includes all the paths of the directory and its subordinates. This scope prevents access to locations outside the specified directory and subdirectory. The most common scenario for configuring and using PhysicalFileProvider
is to practically use IFileProvider
in a constructor right through to Dependency Injection .
Directly instantiating this provider requires a common directory path that is used to maintain the path for all requests made through the provider. Typically supported globe models are not listed in the catalog path.
The following code shows how to use PhysicalFileProvider
to retrieve phonebook content and informationfile options:
var Provider = another PhysicalFileProvider (applicationRoot);var content = provider.GetDirectoryContents (string.Empty);var filePath = Path.Combine ("wwwroot", "js", "site.js");var fileInfo = provider.GetFileInfo (filePath);
-
Provider
is the onlyIFileProvider
. -
contents
isIDirectoryContents
. -
fileInfo
is a goodIFileInfo
.
A file provider can be used to help you browse a directory through a specified applicationRoot
and call GetFileInfo
to get information from a file, such as GetFileInfo . The file provider never has access outside of the
applicationRoot
directory.
The FileProviderSample
configuration app creates a provider with a method for Startup.ConfigureServices
using IHostEnvironment.ContentRootFileProvider>: a
var physicalProvider matches _env.ContentRootFileProvider;
Integrated File Provider Manifesto
ManifestEmbeddedFileProvider is used to access files embedded in assemblies. ManifestEmbeddedFileProvider
uses a stub compiled manifest to restore the original paths of your embeds.swarm files.
-
Add nuget package
Microsoft.Extensions.FileProviders.Embedded
to get real project -
set the
true
. Enter the files withnetcoreapp3.1 true
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Use glob-patterns to specify one or more files to include in the assembly.
The FileProviderSample
application generates a ManifestEmbeddedFileProvider
, and the running assemblies are actually constructors.
var manifestEmbeddedProvider = ManifestEmbeddedFileProvider (typeof (Program) new.Assembly);
- Enter the relative path to the file.
- Select files with the last modified date.
- Name the inserted resource that contains the embedded manifest file.
Overload | Description |
---|---|
ManifestEmbeddedFileProvider (assembly, string) |
Optionally takes a relative path parameter root . Specify the root zone for calls if you require GetDirectoryContents for these resources in the suggested path. |
ManifestEmbeddedFileProvider (Assembly, String, DateTimeOffset) |
Accepts an optional root relative tracking parameter and a wedding day lastModified parameter ( DateTimeOffset ). The lastModified date includes the last static fix date for the IFileInfo instances returned by IFileProvider . |
ManifestEmbeddedFileProvider (Assembly, String, String, DateTimeOffset) |
Accepts any path, date, etc. root relative lastModified . manifestName parameters. manifestName represents a name that refers to the embedded resource that contains the manifest. |
Compound File Provider
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How does ASP file system work?
ASP.NET Core summarizes file system access by transporting file providers. File providers are used throughout the ASP.NET Core framework: IHostingEnvironment renders the content root and main network of the application as IFileProvider types. Static file middleware tends to trick file providers into finding static files.
How do I open a file in C#?
System use;Using System.IO;with the system. Text;Test class.Public static void Main (){line path = @ "c: temp MyTest.txt";// Delete the file if it exists.
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Решения для упрощения доступа к файловой системе Asp.net
Rozwiązania Dostępu Do Maszyn Plików Asp.net