Question

我正在使用SqL Server 2014上msado15.dll中的C++与Windows Server 2016建立动态连接，提供者为MSOLEDBSQL。代码在我添加XSL parameter的行处中断。我没有发现该语句或XSL file出了什么问题。

_com_error：在集合中找不到与所请求名称或顺序相对应的项目

#import "C:\Program Files\Common Files\System\ado\msado15.dll" no_namespace rename("EOF", "EndOfFile")

int main(int argc, char* argv[])
{
HRESULT hr = S_OK;
try
{
    CoInitialize(NULL);
    // Define string variables.
    _bstr_t strCnn("Provider=MSOLEDBSQL;DATABASE=Sample;Data Source=IS-DEV;Trusted_Connection=Yes;");

    _ConnectionPtr mAdoConn;
    _CommandPtr cmd;
    _StreamPtr outStrm;

    const char *xslfile;
    xslfile = "C:\\script\\Test_xsl\\example-html.xsl";

    _variant_t vra(DISP_E_PARAMNOTFOUND, VT_ERROR);
    _variant_t vtEmpty(DISP_E_PARAMNOTFOUND, VT_ERROR);


    hr = mAdoConn.CreateInstance(__uuidof(Connection));

    if (FAILED(hr))
    {
        printf("Failed creating record set instancen");
        return 0;
    }


    hr = mAdoConn->Open(strCnn, L"", L"", -1);

    // Set the Command
    hr = cmd.CreateInstance(__uuidof(Command));

    cmd->ActiveConnection = mAdoConn;
    hr = cmd->put_CommandTimeout(900);

    _bstr_t sqlQuery = "SELECT Id,Title,Artist,Country,Company,Price,Year FROM CDCatalog CD ORDER BY Id FOR XML AUTO";

    hr = cmd->put_CommandText(sqlQuery);

    hr = cmd->Properties->Item[L"XSL"]->put_Value(_variant_t(xslfile));

    // Set-up the output stream
    hr = outStrm.CreateInstance(__uuidof(Stream));

    hr = outStrm->Open(vtEmpty, adModeUnknown, adOpenStreamUnspecified, L"", L"");

    hr = cmd->Properties->Item[L"Output Stream"]->put_Value(_variant_t((IDispatch*)outStrm));

    hr = cmd->Properties->Item[L"Output Encoding"]->put_Value(_variant_t("utf-8")); //ISO-8859-1"));

    hr = cmd->Execute(&vra, &vtEmpty, adExecuteStream);


}
catch (_com_error &ce)
 printf("Error:%s", (char *)ce.Description());

CoUninitialize();
_getch();
return 0;

}

MSOLEDBSQL提供程序的XSLT问题

0 个答案: