When overridden in a derived class, gets a value indicating whether the current stream supports writing.
Assembly: mscorlib (in mscorlib.dll)
The following is an example of using the CanWrite property.
Imports System Imports System.IO Class TestRW Public Shared Sub Main() Dim fs As New FileStream("MyFile.txt", FileMode.OpenOrCreate, _ FileAccess.Write) If fs.CanRead And fs.CanWrite Then Console.WriteLine("MyFile.txt can be both written to and read from.") Else If fs.CanWrite Then Console.WriteLine("MyFile.txt is writable.") End If End If End Sub End Class 'This code outputs "MyFile.txt is writable." 'To get the output message "MyFile.txt can be both written to and read from.", 'change the FileAccess parameter to ReadWrite in the FileStream constructor.
.NET FrameworkSupported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0
.NET Framework Client ProfileSupported in: 4, 3.5 SP1
Portable Class LibrarySupported in: Portable Class Library
.NET for Windows Store appsSupported in: Windows 8
.NET for Windows Phone appsSupported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8
Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.