open Method (IXMLHTTPRequest)

Initializes an MSXML2.XMLHTTP request and specifies the method, URL, and authentication information for the request.

oXMLHttpRequest.open(bstrMethod, bstrUrl, varAsync, bstrUser, bstrPassword);  

bstrMethod
The HTTP method used to open the connection, such as GET, POST, PUT, or PROPFIND. For XMLHTTP, this parameter is not case-sensitive. The verbs TRACE and TRACK are not allowed when IXMLHTTPRequest is hosted in the browser.

bstrUrl
The requested URL. This can be either an absolute URL, such as "http://Myserver/Mypath/Myfile.asp", or a relative URL, such as "../MyPath/MyFile.asp".

varAsync[optional]
A Boolean indicator of whether the call is asynchronous. The default is True (the call returns immediately). If set to True, attach an onreadystatechange property callback so that you can tell when the send call has completed.

bstrUser[optional]
The name of the user for authentication. If this parameter is Null ("") or missing and the site requires authentication, the component displays a logon window.

bstrPassword[optional]
The password for authentication. This parameter is ignored if the user parameter is Null ("") or missing.

The following JScript example creates an XMLHTTP object, and then uses the open method to get a copy of books.xml at the IIS Web server running locally. The code then selects the <book id="bk101"> element to display as output.

var xmlhttp = new ActiveXObject("Msxml2.XMLHTTP.3.0");
xmlhttp.open("GET","https://localhost/books.xml", false);
xmlhttp.send();
var book = xmlhttp.responseXML.selectSingleNode("//book[@id='bk101']");
WScript.Echo(book.xml);

HRESULT open(BSTR bstrMethod, BSTR bstrUrl, VARIANT varAsync,  
 VARIANT bstrUser, VARIANT bstrPassword);  

bstrMethod[in]
The HTTP method used to open the connection, such as PUT or PROPFIND. For XMLHTTP, this parameter is not case-sensitive.

bstrUrl[in]
The requested URL. This can be either an absolute URL, such as "http://Myserver/Mypath/Myfile.asp", or a relative URL, such as "../MyPath/MyFile.asp".

varAsync[in, optional]
A Boolean indicator as to whether the call is asynchronous. The default is True (the call returns immediately). If set to True, attach an onreadystatechange property callback so that you can tell when the send call has completed.

bstrUser[in, optional]
The name of the user for authentication. If this parameter is Null ("") or missing and the site requires authentication, the component displays a logon window.

bstrPassword[in, optional]
The password for authentication. This parameter is ignored if the user parameter is Null or missing.

S_OK
The value returned if successful.

HRESULT hr;
IXMLHttpRequest *pIXMLHttpRequest = NULL;

try
{
   // Create XMLHttpRequest object and initialize pIXMLHttpRequest.
   hr = pIXMLHttpRequest->open(_bstr_t(_T("PUT")), 
      _bstr_t(_T("GET","http://MyServer/Sample.xml", false)), 
      _variant_t(VARIANT_FALSE), _variant_t(""), _variant_t(""));
   if(SUCCEEDED(hr))
      ::MessageBox(NULL, _T("Success !"), _T(""), MB_OK);
}
catch(...)
{
   DisplayErrorToUser();
}
// Release pIXMLHttpRequest when finished with it.

After calling this method, you must call send to send the request and data, if any, to the server.

Implemented in: MSXML 3.0 and MSXML 6.0

abort Method (IXMLHTTPRequest)
onreadystatechange Property (IXMLHTTPRequest)
IXMLHTTPRequest