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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
namespace System
{
partial struct Guid
{
public static Guid NewGuid()
{
// CoCreateGuid should never return Guid.Empty, since it attempts to maintain some
// uniqueness guarantees.
Guid g;
int hr = Interop.Ole32.CoCreateGuid(out g);
// We don't expect that this will ever throw an error, none are even documented, and so we don't want to pull
// in the HR to ComException mappings into the core library just for this so we will try a generic exception if
// we ever hit this condition.
if (hr != 0)
{
Exception ex = new Exception();
ex.HResult = hr;
throw ex;
}
return g;
}
}
}
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