Calling MOSS web services through code

Hi All,

There are many way to code. One way is to use Sharepoint object model, Other way is to use web services to communicate with server and code it.

Here is a way how we can use web services to accomplish our tasks.

Before we start looking in this, let me give you highlights of where these web services are located and later we will see that how these can be used.

All Web services are inside "_vti_bin"

WSS Web Services Web Reference

Administration Service       http:///_vti_adm/admin.asmx
Alerts Service       http:///_vti_bin/alerts.asmx
Document Workspace Service       http:///_vti_bin/dws.asmx
Forms Service       http:///_vti_bin/forms.asmx
Imaging Service       http:///_vti_bin/imaging.asmx
List Data Retrieval Service       http:// /_vti_bin/dspsts.asmx
Lists Service       http:///_ vti_bin/lists.asmx
Meetings Service       http:/// _vti_bin/meetings.asmx
Permissions Service       http:// /_vti_bin/permissions.asmx
Site Data Service       http:///_vti_bin/sitedata.asmx
Site Service       http:///_vti_bin/sites.asmx
Users and Groups Service       http:///_vti_bin/usergroup.asmx
Versions Service       http:///_vti_bin/versions.asmx
Views Service       http:///_vti_bin/views.asmx
Web Part Pages Service       http:// /_vti_bin/webpartpages.asmx
Webs Service       http:///_vti_bin/webs.asmx

The SharePoint web services only accept calls from existing SharePoint users and do also enforce access security. Import the System.Net namespace into your project and then use the NetworkCredential class to set the user credential to use for the web service call. Here is a code snippet:

public static XmlNode VersionsGetVersions(string SharePointHost, string UserName, string Password, string Domain, string FileName)
{
// proxy object to call the Versions web service
Versions.Versions VersionsService = new Versions.Versions();
// the user credentials to use
VersionsService.Credentials = new NetworkCredential(UserName, Password, Domain);
VersionsService.Url = SharePointHost + "_vti_bin/Versions.asmx";
// gets the file versions
XmlNode Result = VersionsService.GetVersions(FileName);
// dispose the web service object
VersionsService.Dispose();
return Result;
}

If the user does not exist in SharePoint or does not have the permission to perform the operation then a WebException is thrown by SharePoint. The returned HTTP status is 401, which means unauthorized request

That's it. your job is done.