public void CreateWrapperOfType_GenericHasNoWrapperWithInterfaces_ReturnsExpected()
{
var comObject = new ComImportObject();
object wrapper = Marshal.CreateWrapperOfType <ComImportObject, HasNonCOMInterfaces>(comObject);
Assert.Same(wrapper, Marshal.GetComObjectData(comObject, typeof(HasNonCOMInterfaces)));
}
public static ComEventSinksContainer FromRuntimeCallableWrapper(object rcw, bool createIfNotFound)
{
// !!! Marshal.Get/SetComObjectData has a LinkDemand for UnmanagedCode which will turn into
// a full demand. We need to avoid this by making this method SecurityCritical
object data = Marshal.GetComObjectData(rcw, _ComObjectEventSinksKey);
if (data != null || createIfNotFound == false)
{
return((ComEventSinksContainer)data);
}
lock (_ComObjectEventSinksKey) {
data = Marshal.GetComObjectData(rcw, _ComObjectEventSinksKey);
if (data != null)
{
return((ComEventSinksContainer)data);
}
ComEventSinksContainer comEventSinks = new ComEventSinksContainer();
if (!Marshal.SetComObjectData(rcw, _ComObjectEventSinksKey, comEventSinks))
{
throw Error.SetComObjectDataFailed();
}
return(comEventSinks);
}
}
/// <summary>
/// Gets a <see cref="ComObject"/> that wraps the runtime-callable-wrapper, or creates one if none currently exists.
/// </summary>
/// <returns></returns>
public static ComObject ObjectToComObject(object rcw)
{
Debug.Assert(ComBinder.IsComObject(rcw));
object data = Marshal.GetComObjectData(rcw, s_comObjectInfoKey);
if (data != null)
{
return((ComObject)data);
}
lock (s_comObjectInfoKey)
{
data = Marshal.GetComObjectData(rcw, s_comObjectInfoKey);
if (data != null)
{
return((ComObject)data);
}
ComObject comObjectInfo = CreateComObject(rcw);
if (!Marshal.SetComObjectData(rcw, s_comObjectInfoKey, comObjectInfo))
{
throw Error.SetComObjectDataFailed();
}
return(comObjectInfo);
}
}
public void CreateWrapperOfType_NonGenericHasNoWrapper_ReturnsExpected()
{
var comObject = new ComImportObject();
object wrapper = Marshal.CreateWrapperOfType(comObject, typeof(WrapperComImportObject));
Assert.Same(wrapper, Marshal.GetComObjectData(comObject, typeof(WrapperComImportObject)));
}
public static ComEventSinksContainer FromRuntimeCallableWrapper(object rcw, bool createIfNotFound)
{
object data = Marshal.GetComObjectData(rcw, s_comObjectEventSinksKey);
if (data != null || !createIfNotFound)
{
return((ComEventSinksContainer)data);
}
lock (s_comObjectEventSinksKey)
{
data = Marshal.GetComObjectData(rcw, s_comObjectEventSinksKey);
if (data != null)
{
return((ComEventSinksContainer)data);
}
ComEventSinksContainer comEventSinks = new ComEventSinksContainer();
if (!Marshal.SetComObjectData(rcw, s_comObjectEventSinksKey, comEventSinks))
{
throw Error.SetComObjectDataFailed();
}
return(comEventSinks);
}
}
public static ComObject ObjectToComObject(object rcw)
{
Debug.Assert(ComObject.IsComObject(rcw));
// Marshal.Get/SetComObjectData has a LinkDemand for UnmanagedCode which will turn into
// a full demand. We could avoid this by making this method SecurityCritical
object data = Marshal.GetComObjectData(rcw, _ComObjectInfoKey);
if (data != null)
{
return((ComObject)data);
}
lock (_ComObjectInfoKey) {
data = Marshal.GetComObjectData(rcw, _ComObjectInfoKey);
if (data != null)
{
return((ComObject)data);
}
ComObject comObjectInfo = CreateComObject(rcw);
if (!Marshal.SetComObjectData(rcw, _ComObjectInfoKey, comObjectInfo))
{
throw Error.SetComObjectDataFailed();
}
return(comObjectInfo);
}
}
/// <summary>
/// Gets the name of the default COM interface for this object.
/// </summary>
/// <remarks>
/// Uses the COM ITypeInfo interface to get the information. Does not throw.
/// </remarks>
/// <param name="obj"></param>
/// <returns>The name of the interface; null on any exception</returns>
///
internal static string GetDefaultCOMInterfaceName(object obj)
{
try {
string intfName = (string)Marshal.GetComObjectData(obj, "NETLinkCOMInterface");
if (intfName == null)
{
UCOMIDispatch iDisp = GetIDispatch(obj);
UCOMITypeInfo iTypeInfo = GetITypeInfo(obj, iDisp);
string typeLibName, docStr, helpFile;
int helpContext;
iTypeInfo.GetDocumentation(-1, out intfName, out docStr, out helpContext, out helpFile);
UCOMITypeLib iTypeLib;
int index;
iTypeInfo.GetContainingTypeLib(out iTypeLib, out index);
iTypeLib.GetDocumentation(-1, out typeLibName, out docStr, out helpContext, out helpFile);
intfName = typeLibName + "." + intfName;
Marshal.SetComObjectData(obj, "NETLinkCOMInterface", intfName);
// Not strictly necessary to release here, but better to force it now than rely on GC to do it later.
// Cannot release iDisp or iTypeInfo, as they might be cached in the object.
Marshal.ReleaseComObject(iTypeLib);
}
return(intfName);
} catch (Exception) {
return(null);
}
}
public void GetComObjectData_ValidObject_ReturnsExpected()
{
var comObject = new ComImportObject();
Assert.Null(Marshal.GetComObjectData(comObject, "key"));
Marshal.SetComObjectData(comObject, "key", 1);
Assert.Equal(1, Marshal.GetComObjectData(comObject, "key"));
Assert.Null(Marshal.GetComObjectData(comObject, "noSuchKey"));
}
// Allows exceptions to be thrown.
private static UCOMITypeInfo GetITypeInfo(object obj, UCOMIDispatch iDisp)
{
UCOMITypeInfo iTypeInfo = (UCOMITypeInfo)Marshal.GetComObjectData(obj, "NETLinkITypeInfo");
if (iTypeInfo == null)
{
iDisp.GetTypeInfo(0, GetUserDefaultLCID(), out iTypeInfo);
Marshal.SetComObjectData(obj, "NETLinkITypeInfo", iTypeInfo);
}
return(iTypeInfo);
}
public void GetComObjectData_NetFramework_ReturnsExpected()
{
Type type = Type.GetTypeFromCLSID(new Guid("927971f5-0939-11d1-8be1-00c04fd8d503"));
object comObject = Activator.CreateInstance(type);
Assert.Null(Marshal.GetComObjectData(comObject, "key"));
Marshal.SetComObjectData(comObject, "key", 1);
Assert.Equal(1, Marshal.GetComObjectData(comObject, "key"));
Assert.Null(Marshal.GetComObjectData(comObject, "noSuchKey"));
}
public void SetComObjectData_NonNullValue_Sucesss()
{
var comObject = new ComImportObject();
Assert.True(Marshal.SetComObjectData(comObject, "key", 1));
Assert.Equal(1, Marshal.GetComObjectData(comObject, "key"));
Assert.False(Marshal.SetComObjectData(comObject, "key", 2));
Assert.Equal(1, Marshal.GetComObjectData(comObject, "key"));
Assert.True(Marshal.SetComObjectData(comObject, "otherKey", 2));
Assert.Equal(2, Marshal.GetComObjectData(comObject, "otherKey"));
}
public static TView GetOrCreateManagedViewFromComData <T, TView>(object comObject, Func <T, TView> createCallback)
{
object key = typeof(TView);
if (Marshal.GetComObjectData(comObject, key) is TView managedView)
{
return(managedView);
}
managedView = createCallback((T)comObject);
if (!Marshal.SetComObjectData(comObject, key, managedView))
{
managedView = (TView)Marshal.GetComObjectData(comObject, key);
}
return(managedView);
}
/// <summary>
/// Like Marshal.ReleaseCOMObject, but also frees IDispatch and ITypeInfo objects held in the object's cache.
/// </summary>
/// <param name="obj"></param>
/// <returns>The new COM refcount.</returns>
///
internal static int releaseCOMObject(object obj)
{
int newRefCount = Marshal.ReleaseComObject(obj);
if (newRefCount == 0)
{
UCOMITypeInfo iTypeInfo = (UCOMITypeInfo)Marshal.GetComObjectData(obj, "NETLinkITypeInfo");
if (iTypeInfo != null)
{
Marshal.ReleaseComObject(iTypeInfo);
}
UCOMIDispatch iDisp = (UCOMIDispatch)Marshal.GetComObjectData(obj, "NETLinkIDispatch");
if (iDisp != null)
{
Marshal.ReleaseComObject(iDisp);
}
}
return(newRefCount);
}
// Returns -1 on failure. Does not throw.
private static int GetMemberDispID(object obj, UCOMIDispatch iDisp, ref string memberName)
{
object val = Marshal.GetComObjectData(obj, "NETLinkDispID" + memberName);
if (val != null)
{
// We also need to extract the modified (U --> _ converted) name.
memberName = (string)Marshal.GetComObjectData(obj, "NETLinkModifiedName" + memberName);
return((int)val);
}
else
{
int memberDispId;
int defaultLCID = GetUserDefaultLCID();
string[] substrs = memberName.Split('U');
int numCombinations = (int)Math.Pow(2, substrs.Length - 1);
for (int i = 0; i < numCombinations; i++)
{
string modifiedName = substrs[0];
// Use bit ops to take i and pick 0 -> U, 1 -> _ for replacement.
for (int j = 1; j < substrs.Length; j++)
{
modifiedName += ((((i >> (j - 1)) & 1) == 0) ? "U" : "_") + substrs[j];
}
try {
iDisp.GetIDsOfNames(ref IID_NULL, new string[] { modifiedName }, 1, defaultLCID, out memberDispId);
} catch (Exception) {
// Try next combination.
continue;
}
// If we get here, name was found, and is held in the variable modifiedName. Cache the correct dispID
// for the unaltered name as it arrives from M, cache the modified name, and then set the ref
// parameter memberName to correct name.
Marshal.SetComObjectData(obj, "NETLinkDispID" + memberName, memberDispId);
Marshal.SetComObjectData(obj, "NETLinkModifiedName" + memberName, modifiedName);
memberName = modifiedName;
return(memberDispId);
}
// Name not found by GetIDsOfNames().
return(-1);
}
}
private HandlerList GetComHandlerList(object instance)
{
HandlerList hl = (HandlerList)Marshal.GetComObjectData(instance, this);
if (hl == null)
{
lock (_staticTarget) {
hl = (HandlerList)Marshal.GetComObjectData(instance, this);
if (hl == null)
{
hl = new ComHandlerList();
if (!Marshal.SetComObjectData(instance, this, hl))
{
throw new COMException("Failed to set COM Object Data");
}
}
}
}
return(hl);
}
/// <summary>
/// Gets parameter information for the given member.
/// </summary>
/// <remarks>
/// Uses the COM ITypeInfo interface to get the information. Does not throw. If it returns false then the out params
/// will not hold useful information.
/// </remarks>
/// <param name="obj"></param>
/// <param name="memberName"></param>
/// <param name="callType"></param>
/// <param name="isBeingCalledWithZeroArgs"></param>
/// <param name="paramTypes"></param>
/// <param name="paramFlags"></param>
/// <param name="endsWithParamArray"></param>
/// <returns>true if the name refers to a valid member or if no type information is available</returns>
///
internal static bool GetMemberInfo(object obj, ref string memberName, int callType, bool isBeingCalledWithZeroArgs,
out Type[] paramTypes, out PARAMFLAG[] paramFlags, out bool endsWithParamArray)
{
// There are some early returns in this method, so we initialize the out params right away. To the caller, if these values
// come back null it means that the information could not be determined.
paramTypes = null;
paramFlags = null;
endsWithParamArray = false;
int defaultLCID = GetUserDefaultLCID();
try {
// Throws in this outer try cause true to be returned. They mean "type info could not be obtained, so the member is not
// known to be invalid."
UCOMIDispatch iDisp = GetIDispatch(obj);
int memberDispId = GetMemberDispID(obj, iDisp, ref memberName);
if (memberDispId == -1)
{
// Name not found by GetIDsOfNames.
return(false);
}
// If no args are being passed, then we can skip all the machinations below about type info.
if (isBeingCalledWithZeroArgs)
{
return(true);
}
UCOMITypeInfo iTypeInfo = GetITypeInfo(obj, iDisp);
IntPtr pFuncDesc;
// Check to see if the func index for this member name is already cached from a previous call.
FuncIndexHolder fih = (FuncIndexHolder)Marshal.GetComObjectData(obj, "NETLinkFuncIndex" + memberName);
if (fih == null)
{
// This will be populated below.
fih = new FuncIndexHolder();
Marshal.SetComObjectData(obj, "NETLinkFuncIndex" + memberName, fih);
}
int funcIndex = -1;
if (callType == Install.CALLTYPE_FIELD_OR_SIMPLE_PROP_GET)
{
if (fih.funcIndexForCALLTYPE_FIELD_OR_SIMPLE_PROP_GET != -1)
{
funcIndex = fih.funcIndexForCALLTYPE_FIELD_OR_SIMPLE_PROP_GET;
}
}
else if (callType == Install.CALLTYPE_FIELD_OR_SIMPLE_PROP_SET || callType == Install.CALLTYPE_PARAM_PROP_SET)
{
if (fih.funcIndexForCALLTYPE_FIELD_OR_ANY_PROP_SET != -1)
{
funcIndex = fih.funcIndexForCALLTYPE_FIELD_OR_ANY_PROP_SET;
}
}
else if (callType == Install.CALLTYPE_METHOD || callType == Install.CALLTYPE_PARAM_PROP_GET)
{
// COM objects are treated by M code as if they all have indexers, so calls like obj[1] will
// come in as CALLTYPE_PARAM_PROP_GET with a property name of Item. We can just treat these like
// method calls.
if (fih.funcIndexForCALLTYPE_METHOD != -1)
{
funcIndex = fih.funcIndexForCALLTYPE_METHOD;
}
}
// Did not have the func index for this call type cached.
if (funcIndex == -1)
{
IntPtr pTypeAttr;
iTypeInfo.GetTypeAttr(out pTypeAttr);
TYPEATTR typeAttr = (TYPEATTR)Marshal.PtrToStructure(pTypeAttr, typeof(TYPEATTR));
int numFuncs = typeAttr.cFuncs;
iTypeInfo.ReleaseTypeAttr(pTypeAttr);
bool foundDispId = false;
for (int thisIndex = 0; thisIndex < numFuncs; thisIndex++)
{
// Be aware that GetFuncDesc() can (I think) throw a cryptic "Element not found" exception,
// such as for a hidden property like (Excel) _Application.ActiveDialog.
iTypeInfo.GetFuncDesc(thisIndex, out pFuncDesc);
FUNCDESC funcDesc = (FUNCDESC)Marshal.PtrToStructure(pFuncDesc, typeof(FUNCDESC));
int thisMemberId = funcDesc.memid;
INVOKEKIND invokeKind = funcDesc.invkind;
iTypeInfo.ReleaseFuncDesc(pFuncDesc);
if (thisMemberId == memberDispId)
{
foundDispId = true;
// Verify that it is a member of the correct call type.
if (callType == Install.CALLTYPE_FIELD_OR_SIMPLE_PROP_GET && invokeKind == INVOKEKIND.INVOKE_PROPERTYGET)
{
fih.funcIndexForCALLTYPE_FIELD_OR_SIMPLE_PROP_GET = thisIndex;
funcIndex = thisIndex;
break;
}
else if ((callType == Install.CALLTYPE_FIELD_OR_SIMPLE_PROP_SET || callType == Install.CALLTYPE_PARAM_PROP_SET) &&
(invokeKind == INVOKEKIND.INVOKE_PROPERTYPUT || invokeKind == INVOKEKIND.INVOKE_PROPERTYPUTREF))
{
fih.funcIndexForCALLTYPE_FIELD_OR_ANY_PROP_SET = thisIndex;
funcIndex = thisIndex;
break;
}
else if ((callType == Install.CALLTYPE_METHOD && (invokeKind == INVOKEKIND.INVOKE_FUNC || invokeKind == INVOKEKIND.INVOKE_PROPERTYGET)) ||
(callType == Install.CALLTYPE_PARAM_PROP_GET && invokeKind == INVOKEKIND.INVOKE_PROPERTYGET))
{
// Parameterized prop gets, not sets, look like CALLTYPE_METHOD. Also, as discussed in an earlier comment,
// indexer notation calls (obj[1]) are supported for all COM objects and come in as CALLTYPE_PARAM_PROP_GET.
fih.funcIndexForCALLTYPE_METHOD = thisIndex;
funcIndex = thisIndex;
break;
}
}
}
if (funcIndex == -1)
{
// We didn't find the member in our search. This can happen in two ways. First, the member might
// exist but not be the right call type. For this case we want to return false. Second, we didn't
// even find the dispid. This can happen in unusual cases I don't understan An example of this
// is the IWebBrowser2 interface obtained by CreateCOMObject["InternetExplorer.Application"].
// For this case we want to return true, as if there was no type info at all available, so the
// call can still proceed.
return(!foundDispId);
}
}
// If we get to here, we have a valid funcIndex and memberDispId, and the member is of the correct variety
// that corresponds to how it was called (e.g., it's a method and it was called as such). All that
// remains is to get the parameter types.
iTypeInfo.GetFuncDesc(funcIndex, out pFuncDesc);
try {
FUNCDESC funcDesc = (FUNCDESC)Marshal.PtrToStructure(pFuncDesc, typeof(FUNCDESC));
Debug.Assert(funcDesc.memid == memberDispId);
int paramCount = funcDesc.cParams;
// Functions that end with a VB-style ParamArray (a variable-length argument sequence) have -1 for the
// cParamsOpt member. It is convenient to treat them specially, hence the 'endsWithParamArray' variable
// (which is an out param for this method). The special treatment involves leaving the ParamArray arg off
// the list of paramFlags and paramTypes. We just pretend there is one less arg to the function but
// record that it ends with a ParamArray. We always know the type of this arg anyway: ByRef Variant[].
// To the caller, though, the individual args are sent as a sequence, not packed into an array.
endsWithParamArray = funcDesc.cParamsOpt == -1;
if (endsWithParamArray)
{
paramCount--;
}
paramTypes = new Type[paramCount];
paramFlags = new PARAMFLAG[paramCount];
IntPtr pElemDescArray = funcDesc.lprgelemdescParam;
for (int paramIndex = 0; paramIndex < paramCount; paramIndex++)
{
ELEMDESC elemDesc = (ELEMDESC)Marshal.PtrToStructure((IntPtr)(pElemDescArray.ToInt64() +
paramIndex * Marshal.SizeOf(typeof(ELEMDESC))), typeof(ELEMDESC));
TYPEDESC typeDesc = elemDesc.tdesc;
paramFlags[paramIndex] = elemDesc.desc.paramdesc.wParamFlags;
// I think I should never see a retval param here. They have been automatically converted to return types.
Debug.Assert((paramFlags[paramIndex] & PARAMFLAG.PARAMFLAG_FRETVAL) == 0);
VarEnum variantType = (VarEnum)typeDesc.vt;
bool isArray = variantType == VarEnum.VT_SAFEARRAY;
bool isPtr = variantType == VarEnum.VT_PTR;
bool isOut = (paramFlags[paramIndex] & PARAMFLAG.PARAMFLAG_FOUT) != 0;
// VB array params will have isPtr and !isArray, because they are always ByRef (thus ptrs).
// In general (always?), out params will be VT_PTR.
if (isArray || isPtr)
{
IntPtr pElementTypeDesc = typeDesc.lpValue;
TYPEDESC elementTypeDesc = (TYPEDESC)Marshal.PtrToStructure(pElementTypeDesc, typeof(TYPEDESC));
variantType = (VarEnum)elementTypeDesc.vt;
// If the arg was a ptr to an array (e.g., as in VB objects), do it again to get the element type.
if (variantType == VarEnum.VT_SAFEARRAY)
{
isArray = true;
pElementTypeDesc = elementTypeDesc.lpValue;
elementTypeDesc = (TYPEDESC)Marshal.PtrToStructure(pElementTypeDesc, typeof(TYPEDESC));
variantType = (VarEnum)elementTypeDesc.vt;
}
}
paramTypes[paramIndex] = managedTypeForVariantType(variantType, isArray, isPtr, isOut);
}
} finally {
iTypeInfo.ReleaseFuncDesc(pFuncDesc);
}
return(true);
} catch (Exception) {
return(true);
}
}
/// <summary>
/// Determines whether the name belongs to a COM property on the given raw COM object.
/// </summary>
/// <remarks>
/// Looks up type information using the COM ITypeInfo interface.
/// Caches the result in the object's built-in COM data area so that subsequent queries for the same name are fast.
/// </remarks>
/// <param name="obj"></param>
/// <param name="memberName"></param>
/// <returns>false if no type information is available, or for any error condition.</returns>
///
internal static bool IsCOMProp(object obj, string memberName)
{
if (Utils.IsMono)
{
return(false);
}
// The memberName can be changed by the call to GetMemberDispID below (U to _ conversion), but we want
// to cache the isComProp value for the unmodified member name, so we save it.
string unmodifiedMemberName = memberName;
object cachedValue = Marshal.GetComObjectData(obj, "NETLinkIsCOMProp" + unmodifiedMemberName);
if (cachedValue != null)
{
return((bool)cachedValue);
}
else
{
UCOMIDispatch iDisp;
UCOMITypeInfo iTypeInfo;
try {
iDisp = GetIDispatch(obj);
iTypeInfo = GetITypeInfo(obj, iDisp);
} catch (Exception) {
Marshal.SetComObjectData(obj, "NETLinkIsCOMProp" + unmodifiedMemberName, false);
return(false);
}
// GetMemberDispID() does not throw on failure--it returns -1.
int memberDispId = GetMemberDispID(obj, iDisp, ref memberName);
if (memberDispId == -1)
{
Marshal.SetComObjectData(obj, "NETLinkIsCOMProp" + unmodifiedMemberName, false);
return(false);
}
// We have successfully passed GetIDsOfNames() and GetITypeInfo(), so we know that type info is available and that
// the name is a member of the dispatch interface. The name may also have been modified to reflect U to _ conversion.
// Previous versions of this method acquired an ITypeInfo2 from the ITypeInfo and called GetFuncIndexOfMemId() to get
// a function index suitable for GetFuncDesc(). There were problems with that technique, in that the index returned
// sometimes (not always) needed to have 7 added to it. Because we cache the T/F result from this method anyway,
// we now just exhaustively call GetFuncDesc() on all the members, looking for one with the right memberDispId.
// Then we can check its func info to see if it is a property with no args.
bool result = false;
IntPtr pTypeAttr;
iTypeInfo.GetTypeAttr(out pTypeAttr);
TYPEATTR typeAttr = (TYPEATTR)Marshal.PtrToStructure(pTypeAttr, typeof(TYPEATTR));
int numFuncs = typeAttr.cFuncs;
iTypeInfo.ReleaseTypeAttr(pTypeAttr);
for (int i = 0; i < numFuncs; i++)
{
IntPtr pFuncDesc;
iTypeInfo.GetFuncDesc(i, out pFuncDesc);
FUNCDESC funcDesc = (FUNCDESC)Marshal.PtrToStructure(pFuncDesc, typeof(FUNCDESC));
int thisMemberID = funcDesc.memid;
INVOKEKIND invokeKind = funcDesc.invkind;
int numParams = funcDesc.cParams;
iTypeInfo.ReleaseFuncDesc(pFuncDesc);
if (thisMemberID == memberDispId)
{
result = invokeKind == INVOKEKIND.INVOKE_PROPERTYGET && numParams == 0;
break;
}
}
Marshal.SetComObjectData(obj, "NETLinkIsCOMProp" + unmodifiedMemberName, result);
return(result);
}
}
public static ComEventsInfo?Find(object rcw)
{
return((ComEventsInfo?)Marshal.GetComObjectData(rcw, typeof(ComEventsInfo)));
}
public void GetComObjectData_NonComObjectObj_ThrowsArgumentNullException()
{
AssertExtensions.Throws <ArgumentException>("obj", () => Marshal.GetComObjectData(1, 2));
}
public void GetComObjectData_NullKey_ThrowsArgumentNullException()
{
AssertExtensions.Throws <ArgumentNullException>("key", () => Marshal.GetComObjectData(new object(), null));
}
public void GetComObjectData_NullObj_ThrowsArgumentNullException()
{
AssertExtensions.Throws <ArgumentNullException>("obj", () => Marshal.GetComObjectData(null, new object()));
}
public void GetComObjectData_NetCore_ThrowsPlatformNotSupportedException()
{
Assert.Throws <PlatformNotSupportedException>(() => Marshal.GetComObjectData(null, null));
}
public void GetComObjectData_ThrowsNotSupportedException()
{
Assert.Throws <NotSupportedException>(() => Marshal.GetComObjectData("key", "value"));
}
