FileStream.CanWrite Property tells whether the current stream supports writing.

 

Imports System
Imports System.IO

Public Class Test
    Public Shared Sub Main()
        Dim path As String = "c:\temp\MyTest.txt"
        File.SetAttributes(path, File.GetAttributes(path) Or FileAttributes.ReadOnly)
        Dim fs As FileStream = New FileStream(path, FileMode.OpenOrCreate, FileAccess.Read)
        If fs.CanWrite Then
            Console.WriteLine("The stream connected to {0} is writable.", path)
        Else
            Console.WriteLine("The stream connected to {0} is not writable.", path)
        End If
        fs.Close()
    End Sub
End Class

Related examples in the same category

1.	Use FileStream to store and read file
2.	Read and Write to a Newly Created Data File
3.	FileStream Class
4.	Create FileStream with FileMode.Append, FileAccess.Write, FileShare.Write
5.	FileStream Constructor (String, FileMode, FileSystemRights, FileShare, Int32, FileOptions, FileSecurity)
6.	FileStream.CanRead Property gets a value indicating whether the current stream supports reading.
7.	FileStream.CanSeek Property gets a value indicating whether the current stream supports seeking.
8.	FileStream.CanWrite Property gets a value indicating whether the current stream supports writing.
9.	FileStream.CanRead And FileStream.CanWrite
10.	FileStream.Seek Method sets the current position of this stream to the given value.
11.	FileStream Class Exposes a Stream around a file
12.	FileStream.CanRead Property tells whether the current stream supports reading.
13.	FileStream.CanSeek Property tells whether the current stream supports seeking.
14.	FileStream.Read Method Reads a block of bytes
15.	FileStream.ReadByte Method Reads a byte from the file
16.	FileStream.Seek Method Sets the current position of this stream to the given value.
17.	Read and Write to a Newly Created Data File

FileStream.CanWrite Property tells whether the current stream supports writing. : FileStream « File Directory « VB.Net

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