public static void test_XPSDocumentFromMemoryBuffer()
{
    string pIn = "../../examples/testfiles/catalog.xps";
    NOPackage lPackage = NOPackage.readPackageFromFile(pIn);
    UInt32 lBufferSize = 1000 * 1000;   // 1000 kb = 1M
    byte[] lBuffer = new byte[lBufferSize];
    uint lFileSize = 0;
    lPackage.writePackageToBuffer(lBuffer, lBufferSize, ref lFileSize); 
    MemoryStream lStream = new MemoryStream(lBuffer, 0, (int)lFileSize);

    string inMemoryPackageName = "memorystream://myXps.xps";
    Uri packageUri = new Uri(inMemoryPackageName);

    Package lXPSPackage = Package.Open(lStream);

    //Add package to PackageStore
    PackageStore.AddPackage(packageUri,lXPSPackage);

    XpsDocument xpsDoc = new XpsDocument(lXPSPackage,
				CompressionOption.Maximum,
				inMemoryPackageName);
    FixedDocumentSequence fixedDocumentSequence = 
				xpsDoc.GetFixedDocumentSequence();

    // Do operations on xpsDoc here
    // Note: Please note that you must keep the Package object
    // in PackageStore until you are completely done with it since
    // certain operations on XpsDocument can trigger delayed
    // resource loading from the package.

    PackageStore.RemovePackage(packageUri);

    xpsDoc.Close();
}

[STAThread]
public static void Main(string[] args)
{
	// ... rest of code
}

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