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A MissingMemberException error is thrown when using EXTRACOM “late bound” Visual Basic .NET (VB.NET) syntax with Reflection Desktop, Reflection 2014, or Reflection 2011. This error occurs when working with the Reflection EXTRACOM API using VB.NET “late binding” syntax, (i.e., declaring variables “As Object”) so that VB.Net will look them up at runtime. Instantiating the EXTRACOM “System” object using the VB.NET “CreateObject” function succeeds, but any attempt to use methods or properties supplied by the System object will cause an exception in Visual Studio 2010 or 2012, as follows:

System.MissingMemberException was unhandled

HResult=-2146233070

Message=Public member ‘ActiveSession’ on type ‘MarshalByRefObject’ not found.

Source=Microsoft.VisualBasic

StackTrace:

at Microsoft.VisualBasic.CompilerServices.Symbols.Container.GetMembers(String& MemberName, Boolean ReportErrors)

at Microsoft.VisualBasic.CompilerServices.NewLateBinding.ObjectLateGet(Object Instance, Type Type, String MemberName, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, Boolean[] CopyBack)

at Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateGet(Object Instance, Type Type, String MemberName, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, Boolean[] CopyBack)

at EXTRALateBinding.Module1.Main() in c:usersnedgedocumentsvisual studio 2010ProjectsEXTRALateBindingEXTRALateBindingModule1.vb:line 8

at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

This exception error does not occur when using the EXTRACOM in VBScript (.vbs file). This exception error also does not occur when using Excel VBA.

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Untitled

A MissingMemberException error is thrown when using EXTRACOM “late bound” Visual Basic .NET (VB.NET) syntax with Reflection Desktop, Reflection 2014, or Reflection 2011. This error occurs when working with the Reflection EXTRACOM API using VB.NET “late binding” syntax, (i.e., declaring variables “As Object”) so that VB.Net will look them up at runtime. Instantiating the EXTRACOM “System” object using the VB.NET “CreateObject” function succeeds, but any attempt to use methods or properties supplied by the System object will cause an exception in Visual Studio 2010 or 2012, as follows:

System.MissingMemberException was unhandled

HResult=-2146233070

Message=Public member ‘ActiveSession’ on type ‘MarshalByRefObject’ not found.

Source=Microsoft.VisualBasic

StackTrace:

at Microsoft.VisualBasic.CompilerServices.Symbols.Container.GetMembers(String& MemberName, Boolean ReportErrors)

at Microsoft.VisualBasic.CompilerServices.NewLateBinding.ObjectLateGet(Object Instance, Type Type, String MemberName, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, Boolean[] CopyBack)

at Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateGet(Object Instance, Type Type, String MemberName, Object[] Arguments, String[] ArgumentNames, Type[] TypeArguments, Boolean[] CopyBack)

at EXTRALateBinding.Module1.Main() in c:usersnedgedocumentsvisual studio 2010ProjectsEXTRALateBindingEXTRALateBindingModule1.vb:line 8

at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()

This exception error does not occur when using the EXTRACOM in VBScript (.vbs file). This exception error also does not occur when using Excel VBA.

Related:

  • No Related Posts