Access a shared folder from a machine not in the domain

I am writing an application in c#, which connects to other machines using remoting, and implants an executable on each machine and then executes 开发者_运维百科it. Each machine creates a dedicated shared folder locally and then asynchronously tries to write to other machines' shared folder.

The problem is that when one machine tries to write to a shared folder of a different machine (in case they are not in the same domain), it fails. if I try to manually access from one machine to the other's shared folder, I'm being prompted for credentials, even though I can see that the shared folder gives full permissions to everyone.

Does anyone know how to solve this issue?

Thanks!

You can use the LogonUser API via P/Invoke to achieve this but you will need some mechanism for getting the users password (the user's keyboard is a good one for this ;) )

DllImport("advapi32.dll", SetLastError=true)]
   static extern bool LogonUser(
     string principal,
     string authority,
     string password,
     LogonTypes logonType,
     LogonProviders logonProvider,
     out IntPtr token);

void login(){
    bool result = LogonUser(
     "Alice", "ACME", // "ACME\Alice"
     pwd,
     LogonTypes.Batch,
     LogonProviders.Default,
     out token);
    if (result){
      //off you go
    }
 }