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using System;
namespace gfoidl.Tools
{
public class Guid
{
#region API
[System.Runtime.InteropServices.StructLayoutAttribute(
System.Runtime.InteropServices.LayoutKind.Sequential)]
private struct GUIDDATA
{
public int Data1;
public short Data2;
public short Data3;
[System.Runtime.InteropServices.MarshalAsAttribute(
System.Runtime.InteropServices.UnmanagedType.ByValArray,
SizeConst = 8)]
public byte[] Data4;
}
[System.Runtime.InteropServices.DllImportAttribute("rpcrt4.dll")]
private static extern int UuidCreateSequential(out GUIDDATA Uuid);
#endregion
//---------------------------------------------------------------------
/// <summary>
/// Erstellt eine GUID
/// </summary>
/// <returns>
/// GUID
/// </returns>
public static System.Guid NewID()
{
return System.Guid.NewGuid();
}
//---------------------------------------------------------------------
/// <summary>
/// Erstellt eine GUID die größer ist als ein je auf dieser
/// Maschine erstellte GUID
/// </summary>
/// <returns>
/// GUID
/// </returns>
public static System.Guid NewSequentialID()
{
GUIDDATA guiddata;
if ((UuidCreateSequential(out guiddata) & 0x80000000) != 0) // FAILED(hr)
throw new InvalidOperationException();
return new System.Guid(
guiddata.Data1,
guiddata.Data2,
guiddata.Data3,
guiddata.Data4);
}
}
}
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