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
System.IO.FileSystem
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.
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NETStandard.Library
A set of standard .NET APIs that are prescribed to be used and supported together. 18a36291e48808fa7ef2d00a764ceb1ec95645a5 When using NuGet 3.x this package requires at least version 3.4.
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Newtonsoft.Json
Json.NET is a popular high-performance JSON framework for .NET
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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.
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System.Reflection
Provides types that retrieve information about assemblies, modules, members, parameters, and other entities in managed code by examining their metadata. These types also can be used to manipulate instances of loaded types, for example to hook up events or to invoke methods. Commonly Used Types: System.Reflection.MethodInfo System.Reflection.PropertyInfo System.Reflection.ParameterInfo System.Reflection.FieldInfo System.Reflection.ConstructorInfo System.Reflection.Assembly System.Reflection.MemberInfo System.Reflection.EventInfo System.Reflection.Module When using NuGet 3.x this package requires at least version 3.4.
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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.
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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.
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Microsoft.DotNet.PlatformAbstractions
Abstractions for making code that uses file system and environment testable.
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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.
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System.Reflection
Provides types that retrieve information about assemblies, modules, members, parameters, and other entities in managed code by examining their metadata. These types also can be used to manipulate instances of loaded types, for example to hook up events or to invoke methods. Commonly Used Types: System.Reflection.MethodInfo System.Reflection.PropertyInfo System.Reflection.ParameterInfo System.Reflection.FieldInfo System.Reflection.ConstructorInfo System.Reflection.Assembly System.Reflection.MemberInfo System.Reflection.EventInfo System.Reflection.Module When using NuGet 3.x this package requires at least version 3.4.
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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.IQueryable<T> System.Linq.IQueryable System.Linq.Expressions.Expression<TDelegate> System.Linq.Expressions.Expression System.Linq.Expressions.ExpressionVisitor When using NuGet 3.x this package requires at least version 3.4.
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System.Xml.XDocument
Provides the classes for Language-Integrated Query (LINQ) to Extensible Markup Language (XML). LINQ to XML is an in-memory XML programming interface that enables you to modify XML documents efficiently and easily. Commonly Used Types: System.Xml.Linq.XElement System.Xml.Linq.XAttribute System.Xml.Linq.XDocument System.Xml.Linq.XText System.Xml.Linq.XNode System.Xml.Linq.XContainer System.Xml.Linq.XComment System.Xml.Linq.XObject System.Xml.Linq.XProcessingInstruction System.Xml.Linq.XDocumentType When using NuGet 3.x this package requires at least version 3.4.
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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.
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NETStandard.Library
A set of standard .NET APIs that are prescribed to be used and supported together. This includes all of the APIs in the NETStandard.Platform package plus additional libraries that are core to .NET but built on top of NETStandard.Platform. When using NuGet 3.x this package requires at least version 3.4.
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System.Xml.XmlDocument
Provides an older in-memory Extensible Markup Language (XML) programming interface that enables you to modify XML documents. Developers should prefer the classes in the System.Xml.XDocument package. Commonly Used Types: System.Xml.XmlNode System.Xml.XmlElement System.Xml.XmlAttribute System.Xml.XmlDocument System.Xml.XmlDeclaration System.Xml.XmlText System.Xml.XmlComment System.Xml.XmlNodeList System.Xml.XmlWhitespace System.Xml.XmlCDataSection When using NuGet 3.x this package requires at least version 3.4.
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System.Net.Sockets
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.
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FluentFTP
An FTP and FTPS client for .NET & .NET Standard, optimized for speed. Provides extensive FTP commands, File uploads/downloads, SSL/TLS connections, Directory listing parsing, File hashing/checksums, File permissions/CHMOD, FTP proxies, FXP transfers, UTF-8 support, Async/await support, Powershell support and more. Written entirely in C#, with no external dependencies.
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System.Xml.ReaderWriter
Provides provides a fast, non-cached, forward-only way to read and write Extensible Markup Language (XML) data. Commonly Used Types: System.Xml.XmlNodeType System.Xml.XmlException System.Xml.XmlReader System.Xml.XmlWriter System.Xml.IXmlLineInfo System.Xml.XmlNameTable System.Xml.IXmlNamespaceResolver System.Xml.XmlNamespaceManager System.Xml.XmlQualifiedName When using NuGet 3.x this package requires at least version 3.4.
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System.Console
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.
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MonoAndroid 1.0

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Xamarin.WatchOS 1.0

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Xamarin.TVOS 1.0

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Xamarin.Mac 2.0

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Xamarin.iOS 1.0

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WindowsPhoneApp 8.1

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WindowsPhone 8.0

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Windows 8.0

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.NETPortable 0.0

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.NET Standard 1.5

.NET Standard 1.3

MonoTouch 1.0

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.NET Framework 4.6.2

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.NETCore 5.0

.NET Framework 4.5

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.NET Standard 1.0

Version Downloads Last updated
4.3.0 5 01/18/2025
4.3.0-preview1-24530-04 2 08/24/2025
4.1.0 8 01/18/2025
4.1.0-rc2-24027 1 08/24/2025
4.0.11-beta-23516 2 08/24/2025
4.0.11-beta-23409 2 08/24/2025
4.0.11-beta-23225 2 08/24/2025
4.0.10 2 08/24/2025
4.0.10-beta-23109 2 08/24/2025
4.0.10-beta-23019 2 08/24/2025
4.0.10-beta-22816 2 08/24/2025
4.0.10-beta-22605 2 08/24/2025
4.0.10-beta-22416 2 08/24/2025
4.0.10-beta-22231 2 08/24/2025
4.0.0 2 08/24/2025
4.0.0-beta-23109 2 08/25/2025
4.0.0-beta-23019 2 08/25/2025