FileStream fileStream = null;        

        fileStream = File.Open(@"C:\Test\Test.txt", FileMode.Open);

        returnValue = GetSecurityInfo(fileStream.Handle, SE_OBJECT_TYPE.SE_FILE_OBJECT, SECURITY_INFORMATION.OWNER_SECURITY_INFORMATION | SECURITY_INFORMATION.DACL_SECURITY_INFORMATION, out ownerSid, out groupSid, out dacl, out sacl, out securityDescriptor);          

        fileStream.Close();

        FileStream fs = File.OpenRead(file);

    Dim fs As New FileStream(file, FileMode.Open)

    FileStream file = new FileStream(dumpFileName, FileMode.Create);

        FileStreamInformation

        FileStreamInformation,        // 22

using System.IO; // for test main (FileStream) only

        FileStreamInformation,            // 22

            using(FileStream fs = new FileStream(path2file, FileMode.Open, FileAccess.Read, FileShare.Read)) {

        using(FileStream fs = File.Create(path2file)) {

    FileStream ifs = new FileStream("MyTest.cer", FileMode.Open, FileAccess.Read);

    using (FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read))

        certData = new Byte[fileStream.Length];

        fileStream.Read(certData, 0, (int)fileStream.Length);

        FileStreamInfo = 7,

using (FileStream fs = new FileStream("c:\\my_catalog.cat", FileMode.Open))

[System.IO.FileStream]

[System.IO.FileStream]

https://social.msdn.microsoft.com/Search/en-US?query=System.IO.FileStream

System.IO.FileStream

You can use the IntPtr from Createfile with FileStream. This is usefull for opening devices such as Com1:, Lpt1: and Prn.

Unlike the FileStream ctor, CreateFile also allows you to open or create Windows 2000 sub-streams (e.g. "C:\Temp.dat:SubStream1").

    return new FileStream(ptr,access);

    return new FileStream(hDrv, FileAccess.Read);

     FileStream lpt = new FileStream(ptr,FileAccess.ReadWrite);

        FileStream diskStreamToRead = new FileStream( drive, FileAccess.Read );

    FileStream diskStreamToWrite = new FileStream( drive, FileAccess.Write );

   FileStream f=File.Open(filename,System.IO.FileMode.Open,System.IO.FileAccess.ReadWrite,System.IO.FileShare.None);

static extern TODO FileStream(TODO);

Declare Function FileStream Lib "kernel32.dll" (TODO) As TODO

    FileStream[] files = assembly.GetFiles();

System.IO.FileStream

        FileStreamInfo = 7,

            SetFileInformationByHandle(fileStream.SafeFileHandle, FileInformationClass.FileDispositionInfo, ref FileInformation, Marshal.SizeOf(FileInformation.FILE_DISPOSITION_INFO));

            SetFileInformationByHandle(fileStream.SafeFileHandle, FileInformationClass.FileEndOfFileInfo, ref FileInformation, Marshal.SizeOf(FileInformation.FILE_END_OF_FILE_INFO));

    Dim oFile_Stream As System.IO.FileStream

System.IO.FileStream

The documentation for the Scatter/Gather functions states that the buffer addresses used must be page aligned (not just storage aligned). Indeed, passing a managed allocation, such as a byte array, causes error 87 (Invalid Parameter). This function is asynchronous only so an use the AsyncResult and Overlapped pattern established by the FileStream.