Fail to publish UWP application

Hi, I created a UWP project in Xamari, and it can run successfully when debug. But when I change to release and create app packages, it failed. I need help. Thanks!

Environment:Win10 1909,Microsoft Visual Studio Enterprise 2019 Version 16.6.0

  1. Create new cross platfrom Xamarin project include UWP(Windows 10 version 1903(build 18362)
  2. Add GemBox.Document for .NET Standard 2.0 library:
    image
  3. Success when debugging.
  4. Change debug to release, fail to create App package when publishing
    image

Error message:

Error

70> Processing application code
70> Computing application closure and generating interop code
70> Loading 208 modules…
70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘gdiplus.dll!GdipEmfToWmfBits’ for method ‘System.UInt32  ..(System.IntPtr, System.UInt32, System.Byte, System.Int32,  .)’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.
70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘gdi32.dll!SetMetaFileBitsEx’ for method ‘System.IntPtr  ..(System.UInt32, System.Byte)’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.
70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘gdi32.dll!CopyMetaFile’ for method ‘System.IntPtr  ..(System.IntPtr, System.String)’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.
70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘gdi32.dll!DeleteMetaFile’ for method ‘System.Boolean  ..(System.IntPtr)’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.
70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘gdi32.dll!DeleteEnhMetaFile’ for method ‘System.Boolean  ..(System.IntPtr)’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.
70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘libdl!dlerror’ for method ‘System.IntPtr Net.Pkcs11Interop.Common.NativeMethods.dlerror()’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.
70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘libdl!dlopen’ for method ‘System.IntPtr Net.Pkcs11Interop.Common.NativeMethods.dlopen(System.String, System.Int32)’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.
70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘libdl!dlclose’ for method ‘System.Int32 Net.Pkcs11Interop.Common.NativeMethods.dlclose(System.IntPtr)’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.
70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘libdl!dlsym’ for method ‘System.IntPtr Net.Pkcs11Interop.Common.NativeMethods.dlsym(System.IntPtr, System.String)’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.

70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘__Internal!C_VerifyFinal’ for method ‘System.UInt64 Net.Pkcs11Interop.LowLevelAPI81.Delegates.NativeMethods.C_VerifyFinal(System.UInt64, System.Byte, System.UInt64)’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.

…(Deleted)

70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘__Internal!C_CancelFunction’ for method ‘System.UInt32 Net.Pkcs11Interop.LowLevelAPI40.Delegates.NativeMethods.C_CancelFunction(System.UInt32)’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.
70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\tools\Microsoft.NetNative.targets(801,5): warning : MCG : warning MCG0007: Unresolved P/Invoke method ‘__Internal!C_WaitForSlotEvent’ for method ‘System.UInt32 Net.Pkcs11Interop.LowLevelAPI40.Delegates.NativeMethods.C_WaitForSlotEvent(System.UInt32, System.UInt32, System.IntPtr)’. Calling this method would throw exception at runtime. Please make sure the P/Invoke either points to a Windows API allowed in UWP applications, or a native DLL that is part of the package. If for some reason your P/Invoke does not satisfy those requirements, please use [DllImport(ExactSpelling=true) to indicate that you understand the implications of using non-UWP APIs.
70> Generating code…
70> Interop code generated.
70> Generating serialization code
70> Compiling interop code
70>C:\Users\HMY.nuget\packages\microsoft.net.native.compiler\2.2.8-rel-28605-00\too
ls\Microsoft.NetNative.targets(801,5): error : ILT0014: Failed to compile interop source code. See the build log for error details.

Hi HMY,

I just wanted to let you know that we’re still working on your report.
I’ll contact you again later.

Regards,
Mario

Hi,

After the investigation, we concluded that the problem is with the DLL file’s obfuscation settings which GemBox.Document uses by default.

Nevertheless, we have tried using less restricted settings and were able to publish the UWP application and run it in both DEBUG and RELEASE.

Professional users of GemBox component can obtain this DLL version by sending us a request for it.

I hope this helps.

Regards,
Mario

Thanks!I have received the new version, and upgraded GemBox.Document Nuget package yesterday, Release build success.