System.IO 4.3.0

Provides base input and output (I/O) types, including System.IO.Stream, System.IO.StreamReader and System.IO.StreamWriter, that allow reading and writing to data streams Commonly Used Types: System.IO.Stream System.IO.EndOfStreamException System.IO.MemoryStream System.IO.StreamReader System.IO.StreamWriter System.IO.StringWriter System.IO.TextWriter System.IO.TextReader When using NuGet 3.x this package requires at least version 3.4.

Showing the top 20 packages that depend on System.IO.

Packages Downloads
Microsoft.DotNet.InternalAbstractions
Abstractions for making code that uses file system and environment testable.
7
Microsoft.Extensions.FileProviders.Abstractions
Abstractions of files and directories. Commonly used types: Microsoft.Extensions.FileProviders.IDirectoryContents Microsoft.Extensions.FileProviders.IFileInfo Microsoft.Extensions.FileProviders.IFileProvider
7
System.IO.Packaging
Provides classes that support storage of multiple data objects in a single container. When using NuGet 3.x this package requires at least version 3.4.
7
System.Text.Encodings.Web
Provides types for encoding and escaping strings for use in JavaScript, HyperText Markup Language (HTML), and uniform resource locators (URL). Commonly Used Types: System.Text.Encodings.Web.HtmlEncoder System.Text.Encodings.Web.UrlEncoder System.Text.Encodings.Web.JavaScriptEncoder When using NuGet 3.x this package requires at least version 3.4.
7
System.Xml.XPath
Provides the classes that define a cursor model for navigating and editing Extensible Markup Language (XML) information items as instances of the XQuery 1.0 and XPath 2.0 Data Model. Commonly Used Types: System.Xml.XPath.XPathNavigator System.Xml.XPath.IXPathNavigable System.Xml.XPath.XPathNodeType System.Xml.XPath.XPathNodeIterator System.Xml.XPath.XPathExpression System.Xml.XPath.XPathResultType System.Xml.XPath.XPathException System.Xml.XPath.XPathDocument System.Xml.XPath.XPathItem System.Xml.XPath.XPathNamespaceScope When using NuGet 3.x this package requires at least version 3.4.
7
runtime.win.System.Console
Internal implementation package not meant for direct consumption. Please do not reference directly. Provides the System.Console class, which represents the standard input, output and error streams for console applications. Commonly Used Types: System.Console System.ConsoleColor When using NuGet 3.x this package requires at least version 3.4.
7
runtime.win.System.Net.Sockets
Internal implementation package not meant for direct consumption. Please do not reference directly. Provides classes such as Socket, TcpClient and UdpClient, which enable developers to send and receive data over the network. Commonly Used Types: System.Net.Sockets.Socket System.Net.Sockets.SocketAsyncEventArgs System.Net.Sockets.LingerOption System.Net.Sockets.SocketAsyncOperation System.Net.Sockets.ProtocolType System.Net.Sockets.NetworkStream System.Net.Sockets.TcpClient System.Net.Sockets.SocketType System.Net.Sockets.UdpClient System.Net.Sockets.SocketShutdown When using NuGet 3.x this package requires at least version 3.4.
6
runtime.win.System.Console
Internal implementation package not meant for direct consumption. Please do not reference directly. Provides the System.Console class, which represents the standard input, output and error streams for console applications. Commonly Used Types: System.Console System.ConsoleColor When using NuGet 3.x this package requires at least version 3.4.
6
runtime.win.System.IO.FileSystem
Internal implementation package not meant for direct consumption. Please do not reference directly. Provides types that allow reading and writing to files and types that provide basic file and directory support. Commonly Used Types: System.IO.FileStream System.IO.FileInfo System.IO.DirectoryInfo System.IO.FileSystemInfo System.IO.File System.IO.Directory System.IO.SearchOption System.IO.FileOptions When using NuGet 3.x this package requires at least version 3.4.
6
Microsoft.AspNetCore.WebUtilities
ASP.NET Core utilities, such as for working with forms, multipart messages, and query strings.
4
System.Security.Cryptography.Cng
Provides cryptographic algorithm implementations and key management with Windows Cryptographic Next Generation API (CNG). Commonly Used Types: System.Security.Cryptography.RSACng System.Security.Cryptography.ECDsaCng System.Security.Cryptography.CngKey When using NuGet 3.x this package requires at least version 3.4.
4
System.Runtime.Loader
Provides the System.Runtime.Loader.AssemblyLoadContext class, which provides members for loading assemblies. Commonly Used Types: System.Runtime.Loader.AssemblyLoadContext When using NuGet 3.x this package requires at least version 3.4.
4
System.Linq.Expressions
Provides classes, interfaces and enumerations that enable language-level code expressions to be represented as objects in the form of expression trees. Commonly Used Types: System.Linq.Expressions.Expression<TDelegate> System.Linq.Expressions.Expression System.Linq.Expressions.MemberExpression System.Linq.Expressions.ExpressionVisitor System.Linq.Expressions.MethodCallExpression System.Linq.IQueryable<T> System.Linq.IQueryable System.Linq.Expressions.NewExpression System.Linq.Expressions.ParameterExpression System.Linq.Expressions.ConstantExpression When using NuGet 3.x this package requires at least version 3.4.
3
System.Reflection.Emit
Provides classes that allow a compiler or tool to emit metadata and optionally generate a PE file on disk. The primary clients of these classes are script engines and compilers. Commonly Used Types: System.Reflection.Emit.AssemblyBuilder System.Reflection.Emit.FieldBuilder System.Reflection.Emit.TypeBuilder System.Reflection.Emit.MethodBuilder System.Reflection.Emit.ConstructorBuilder System.Reflection.Emit.GenericTypeParameterBuilder System.Reflection.Emit.ModuleBuilder System.Reflection.Emit.PropertyBuilder System.Reflection.Emit.AssemblyBuilderAccess System.Reflection.Emit.EventBuilder When using NuGet 3.x this package requires at least version 3.4.
3
System.Net.Http
Provides a programming interface for modern HTTP applications, including HTTP client components that allow applications to consume web services over HTTP and HTTP components that can be used by both clients and servers for parsing HTTP headers. Commonly Used Types: System.Net.Http.HttpResponseMessage System.Net.Http.DelegatingHandler System.Net.Http.HttpRequestException System.Net.Http.HttpClient System.Net.Http.MultipartContent System.Net.Http.Headers.HttpContentHeaders System.Net.Http.HttpClientHandler System.Net.Http.StreamContent System.Net.Http.FormUrlEncodedContent System.Net.Http.HttpMessageHandler When using NuGet 3.x this package requires at least version 3.4.
2
System.IO.Compression
Provides classes that support the compression and decompression of streams. Commonly Used Types: System.IO.Compression.DeflateStream System.IO.Compression.GZipStream System.IO.Compression.CompressionMode System.IO.Compression.CompressionLevel System.IO.Compression.ZipArchiveEntry System.IO.Compression.ZipArchive System.IO.Compression.ZipArchiveMode When using NuGet 3.x this package requires at least version 3.4.
1
System.Diagnostics.FileVersionInfo
Provides the System.Diagnostics.FileVersionInfo class, which allows access to Win32 version resource information for a physical file on disk. Commonly Used Types: System.Diagnostics.FileVersionInfo When using NuGet 3.x this package requires at least version 3.4.
1
System.Text.Encoding.CodePages
Provides support for code-page based encodings, including Windows-1252, Shift-JIS, and GB2312. Commonly Used Types: System.Text.CodePagesEncodingProvider When using NuGet 3.x this package requires at least version 3.4.
1
System.Security.Cryptography.X509Certificates
Provides types for reading, exporting and verifying Authenticode X.509 v3 certificates. These certificates are signed with a private key that uniquely and positively identifies the holder of the certificate. Commonly Used Types: System.Security.Cryptography.X509Certificates.X509Certificate2 System.Security.Cryptography.X509Certificates.X509Certificate System.Security.Cryptography.X509Certificates.X509ContentType System.Security.Cryptography.X509Certificates.StoreLocation System.Security.Cryptography.X509Certificates.StoreName System.Security.Cryptography.X509Certificates.X509FindType System.Security.Cryptography.X509Certificates.X509ChainStatus System.Security.Cryptography.X509Certificates.X509Certificate2Collection System.Security.Cryptography.X509Certificates.X509EnhancedKeyUsageExtension System.Security.Cryptography.X509Certificates.X509Chain When using NuGet 3.x this package requires at least version 3.4.
1
Microsoft.IdentityModel.Logging
Includes Event Source based logging support.
1

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MonoAndroid 1.0

  • No dependencies.

Xamarin.WatchOS 1.0

  • No dependencies.

Xamarin.TVOS 1.0

  • No dependencies.

Xamarin.Mac 2.0

  • No dependencies.

Xamarin.iOS 1.0

  • No dependencies.

WindowsPhoneApp 8.1

  • No dependencies.

WindowsPhone 8.0

  • No dependencies.

Windows 8.0

  • No dependencies.

.NETPortable 0.0

  • No dependencies.

.NET Standard 1.5

.NET Standard 1.3

MonoTouch 1.0

  • No dependencies.

.NET Framework 4.6.2

  • No dependencies.

.NETCore 5.0

.NET Framework 4.5

  • No dependencies.

.NET Standard 1.0

Version Downloads Last updated
4.3.0 0 7/9/2025
4.1.0 0 6/23/2025