@msdn=http://msdn.microsoft.com/en-us/library/windows/desktop/aa965224%28v=vs.85%29.aspx @pinvoke=http://pinvoke.net/$$$.htm Summary: Retrieves the current size limits for the working set of the system cache. !!!!C# Signature: /// <summary></summary> /// <param name="lpMinimumFileCacheSize">Receives the minimum size of the file cache, in bytes</param> /// <param name="lpMaximumFileCacheSize">Receives the maximum size of the file cache, in bytes</param> /// <param name="Flags">See File_Cache_Flags</param> /// <returns>0=fail !0=success</returns> [DllImport("kernel32.dll", SetLastError=true)] [return: MarshalAs(UnmanagedType.Bool)] static extern bool GetSystemFileCacheSize( ref IntPtr lpMinimumFileCacheSize, ref IntPtr lpMaximumFileCacheSize, ref File_Cache_Flags Flags ); !!!!VB Signature: !!!!User-Defined Types: /// <summary>Flags for use with ?etSystemFileCacheSize. Note that corresponding enable & disable are mutually exclusive and will fail.</summary> [Flags] public enum File_Cache_Flags : uint // 32 bits { MAX_HARD_ENABLE = 0x00000001, MAX_HARD_DISABLE = 0x00000002, MIN_HARD_ENABLE = 0x00000004, MIN_HARD_DISABLE = 0x00000008, } !!!!Alternative Managed API: Do you know one? Please contribute it! !!!!Notes: The GetSystemFileCacheSize will never return the 'Disable' flags (2 & 8). !!!!Tips & Tricks: Please add some! !!!!Sample Code: [DllImport("kernel32", SetLastError = true)] public static extern bool GetSystemFileCacheSize( ref IntPtr lpMinimumFileCacheSize, ref IntPtr lpMaximumFileCacheSize, ref int lpFlags ); static void Main(string[] args) { IntPtr lpMinimumFileCacheSize = IntPtr.Zero; IntPtr lpMaximumFileCacheSize = IntPtr.Zero; File_Cache_Flags lpFlags; bool b = GetSystemFileCacheSize(ref lpMinimumFileCacheSize, ref lpMaximumFileCacheSize, ref lpFlags); if(!b) throw new Win32Exception(); Console.WriteLine(lpMinimumFileCacheSize); Console.WriteLine(lpMaximumFileCacheSize); } Documentation: http://msdn.microsoft.com/en-us/library/aa965224(VS.85).aspx on MSDN
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