C # How the winform program operates on ad

C # Web CodeIt may be easy to operate the Active Directory (AD,
Add <identity impersonate = "true" username = "username" Password = "password"/>

In winform code, the operations on Active Directory (AD) are not the same (especially when the running computer is not in the domain, but the network must be connected)
Which of the following parameters is different when constructing a directoryentry object? Others are the same.

For example, construct a directoryentry object on the Web:
Directoryentry myde = new directoryentry ("LDAP: // path");

Construct a directoryentry object in form:
Directoryentry myde = new directoryentry ("LDAP: // ip address of the domain controller Server/Path","User Name@Domain full name","Password");
In this way
The computer running this code is not added to the domain, and the Active Directory (AD) is also operated)