Setting the AutoResolve property determines if the control
automatically resolves host names and addresses specified by the
HostName and HostAddress properties. If set to True,
setting the HostName property will cause the control to
automatically determine the corresponding IP address and set the
HostAddress property accordingly. Likewise, setting the
HostAddress property will cause the control to determine the
host name and set the HostName property. Setting the property
to False prevents the control from resolving host names until a
connection attempt is made.
Note that setting the HostName or HostAddress
property may cause the current thread to block, sometimes for several
seconds, until the name or address is resolved. To prevent this
behavior, set AutoResolve to False.