CreateWriteStream(IWritableFileInfo,FileMode) Method

Creates or opens a file with read/write access, returning a System.IO.Stream to access its data.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<ExtensionAttribute()>
<NotNullAttribute()>
Public Overloads Shared Function CreateWriteStream( _
   ByVal writableFileInfo As IWritableFileInfo, _
   ByVal fileMode As FileMode _
) As Stream

'Usage
 
Dim writableFileInfo As IWritableFileInfo
Dim fileMode As FileMode
Dim value As Stream
 
value = IWritableFileInfoExtension.CreateWriteStream(writableFileInfo, fileMode)

[Extension()]
[NotNull()]
public static Stream CreateWriteStream( 
   IWritableFileInfo writableFileInfo,
   FileMode fileMode
)

[Extension()]
[NotNull()]
public:
static Stream^ CreateWriteStream( 
   IWritableFileInfo^ writableFileInfo,
   FileMode fileMode
)

Parameters

writableFileInfo: The writable file info object that will perform the operation.
The value of this parameter cannot be null (Nothing in Visual Basic).
fileMode: A System.IO.FileMode value that specifies whether a file is created if one does not exist, and determines whether the contents of existing files are retained or overwritten.

Return Value

A new stream to access the file data.

This method never returns null (Nothing in Visual Basic).

Exceptions

Exception	Description
System.ArgumentException	One of the arguments provided to a method is not valid. This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.
System.IO.DirectoryNotFoundException	Part of a file or directory cannot be found. This is an operation error that depends on factors external to your program, and thus cannot be always avoided. Your code must handle it appropriately.
System.IO.FileNotFoundException	An attempt to access a file that does not exist on disk has failed. This is an operation error that depends on factors external to your program, and thus cannot be always avoided. Your code must handle it appropriately.
System.IO.IOException	An I/O error has occurred. This is an operation error that depends on factors external to your program, and thus cannot be always avoided. Your code must handle it appropriately.
System.NotSupportedException	An invoked method is not supported at all, or is not supported with the parameters used to create the object.
System.IO.PathTooLongException	A path or fully qualified file name is longer than the system-defined maximum length. This is an operation error that depends on factors external to your program, and thus cannot be always avoided. Your code must handle it appropriately.
System.Security.SecurityException	A security error was detected. This is an operation error that depends on factors external to your program, and thus cannot be always avoided. Your code must handle it appropriately.
System.UnauthorizedAccessException	The operating system has denied access because of an I/O error or a specific type of security error. This is an operation error that depends on factors external to your program, and thus cannot be always avoided. Your code must handle it appropriately.

Remarks

This method is similar in purpose to System.IO.FileInfo.Create, but is generalized for any kind of writable file info, not just files in the physical file system.

This is an extension method (info: C#, VB.NET). In languages that have support for extensions methods (such as C# and VB.NET), you can use the extension method as if it were a regular method on the object that is its first parameter. In other languages (such as with Python.NET), you will call the extension as a static method, and pass it the object on which it acts as its first parameter.

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

IWritableFileInfoExtension Class
IWritableFileInfoExtension Members
Overload List
CreateStreamWriter(IWritableFileInfo) Method
CreateWriteStream Method

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