mohammad wrote:
>Hi,
>
> I am trying to use my .Net component from COM application.
>I have some static members in my .Net component.
>I tried to use reflection to invoke static members.
>Any body has example of invoking static members?
>
>Thanks
>Mohammad
>namespace Mcc.TestAutomation.Utilities
>{
>public class MyStatics
>{
> static MyStatics()
> {
> }
> public static void printHelloWorld()
> {
> Console.Out.WriteLine("Hello World!");
> }
>}
>}
>And Adam Nathan Book. But it can not call my static member
>HRESULT InvokeStaticMember(BSTR typeName, BSTR memberName,
> BindingFlags memberType, SAFEARRAY* parameters, VARIANT* retval)
>{
> HRESULT hresult;
> IUnknown * pUnk = NULL;
> _Object* pObj = NULL;
> _Type* pType = NULL;
> _Type* pTypeOfType = NULL;
> _Type* pDesiredType = NULL;
>
> VARIANT typeNameParam;
> VARIANT getTypeRetVal;
> VARIANT nullObject;
>
> SAFEARRAY* psa;
> LONG index;
> BSTR getTypeName = SysAllocString(L"GetType");
>
> VariantInit(&typeNameParam);
> VariantInit(&getTypeRetVal);
> VariantInit(&nullObject);
>
> hresult = CoCreateInstance(CLSID_Object, NULL, CLSCTX_INPROC_SERVER,
>IID_IUnknown, (void **)&pUnk);
> if (FAILED(hresult)) goto cleanup;
>
> //Get The object Interface so we can call GetType
> hresult = pUnk->QueryInterface(IID__Object, (void **)&pObj);
> if (FAILED(hresult)) goto cleanup;
>
> hresult = pObj->GetType(&pType);
> if (FAILED(hresult)) goto cleanup;
>
> hresult = pType->GetType(&pTypeOfType);
> if (FAILED(hresult)) goto cleanup;
>
> psa = SafeArrayCreateVector(VT_VARIANT, 0, 1);
> typeNameParam.vt = VT_BSTR;
> typeNameParam.bstrVal = typeName;
> index =0;
>
> hresult = SafeArrayPutElement(psa, &index, &typeNameParam);
> if (FAILED(hresult)) goto cleanup;
>
> nullObject.vt = VT_EMPTY;
> hresult = pTypeOfType->InvokeMember_3(getTypeName,
> (BindingFlags)(BindingFlags_InvokeMethod | BindingFlags_Public |
> BindingFlags_Static | BindingFlags_FlattenHierarchy), NULL,
>nullObject, psa, &getTypeRetVal);
> if (FAILED(hresult)) goto cleanup;
>
> hresult = getTypeRetVal.punkVal->QueryInterface(IID__Type, (void **)
>&pDesiredType);
> if (FAILED(hresult)) goto cleanup;
>
> hresult = pDesiredType->InvokeMember_3(memberName,
> (BindingFlags) (memberType | BindingFlags_Public |
> BindingFlags_Static | BindingFlags_FlattenHierarchy), NULL,
> nullObject, parameters, retval);
> if (FAILED(hresult)) goto cleanup;
>
>cleanup:
> if (pUnk) pUnk->Release();
> if (pObj) pObj->Release();
> if (pType) pType->Release();
> if (pTypeOfType) pTypeOfType->Release();
> if (pDesiredType) pDesiredType->Release();
> if (getTypeName) SysFreeString(getTypeName);
> SafeArrayDestroy(psa);
> VariantClear(&typeNameParam);
> VariantClear(&getTypeRetVal);
> VariantClear(&nullObject);
>
> return hresult;
>}