.NET Framework 4.6 and 4.5
When overridden in a derived class, gets a value indicating whether the current stream supports writing.
Assemblies: mscorlib (in mscorlib.dll)
System.IO (in System.IO.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: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
.NET Framework Client ProfileSupported in: 4, 3.5 SP1
XNA FrameworkSupported in: 3.0, 2.0, 1.0
Portable Class LibrarySupported in: Portable Class Library
Supported in: Windows Phone 8.1
Supported in: Windows Phone Silverlight 8.1
Supported in: Windows Phone Silverlight 8