Listdata svc - Copying SPListItems with attachments

Question

I am using Listdata.svc to add or update list items on a remote sharepoint server. I need to know that if suppose I am using a tasks list and the items in the tasks list have attachment of file in them, then how to copy those attachments to the remote sharepoint server through "listdata.svc" service.

Thanks.

Answer 1

i haven't tried getting the binaries using the svc, but if you can get the URL of the attachment then, you can use the client object model to get the actual document.

http://msdn.microsoft.com/en-us/library/ee537083.aspx

File.OpenBinaryDirect(context,'server relitive url')

a demo getting the clientcontext object

public ClientContext getClientContext(string url, NetworkCredential credentials)
{
    ClientContext clientContext = new ClientContext(url);
    clientContext.Credentials = credentials;
    return clientContext;
}

EDIT :

To upload an atachment using Lists.asmx webservice You must first encapsulate the webservice this can be done using visual studio by adding a service refrence the url to the web service is

the webservice url is http://sharepoint/_vti_bin/Lists.asmx

once the webservice is ecapsulated you can call the addAtatchment method like this:

ListServiceExample.ServiceReference1.ListsSoapClient listWS = new ListServiceExample.ServiceReference1.ListsSoapClient();
NetworkCredential creds = new NetworkCredential("username","password");
creds.Domain = "domain";
listWS.ClientCredentials.Windows.ClientCredential = creds;
listWS.AddAttachment(ListName,ListItemID,fileName,Binary Array);

if you want to see what other methods you can call with this webservice just enter http://sharepoint/_vti_bin/Lists.asmx into your url remember to replace sharepoint with your instances host name.

also the rest of sharepoints webservices can be found in the %14hive%\ISAPI folder

Kind Regards