open Method (IXMLHTTPRequest)
Initializes an MSXML2.XMLHTTP request and specifies the method, URL, and authentication information for the request.
[Script]
Script Syntax
oXMLHttpRequest.open(bstrMethod, bstrUrl, varAsync, bstrUser, bstrPassword);
Parameters
- bstrMethod
- The HTTP method used to open the connection, such as GET, POST, PUT, or PROPFIND.
- 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 thesend
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.
Example
The following script example creates an XMLHTTP
object, and then uses the open
method to synchronously open an Active Server Pages (ASP) page. The script then posts an XML document to an ASP page, which uses the load
method to load the document.
var xmlhttp = new ActiveXObject("Msxml2.XMLHTTP.5.0"); xmlHTTP.open("GET","http://myserver/save.asp", false); xmlHTTP.send(xmlDoc)
The following code belongs on the server.
<% xmlDoc.load(Request); %>
[Visual Basic]
Visual Basic Syntax
oXMLHttpRequest.open(bstrMethod, bstrUrl, varAsync, bstrUser, bstrPassword)
Parameters
- bstrMethod
- The HTTP method used to open the connection, such as GET, POST, PUT, or PROPFIND.
- 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 thesend
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.
[C/C++]
C/C++ Syntax
HRESULT open(BSTR bstrMethod, BSTR bstrUrl, VARIANT varAsync, VARIANT bstrUser, VARIANT bstrPassword);
Parameters
- bstrMethod [in]
- The HTTP method used to open the connection, such as PUT or PROPFIND.
- 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 thesend
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.
C/C++ Return Values
- S_OK
- The value returned if successful.
C/C++ Example
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.
Remarks
After calling this method, you must call send
to send the request and data, if any, to the server.
To view reference information for Visual Basic, C/C++, or Script only, click the Language Filter button in the upper-left corner of the page.
See Also
abort Method | onreadystatechange Property
Applies to: IXMLHTTPRequest