The following tables list the members exposed by BGCore.
Public Constructors
| Name | Description | |
|---|---|---|
 | BGCore Constructor | Available in the OPCDA.NET Professional Edition only. An instance is created into inactive state. The Form class argument is used in the request completion handlers to call Form.BeginInvoke() in order to synchronize the completion handler with the user interface thread. |
Public Properties
| Name | Description | |
|---|---|---|
 | ServerResponseLimit | Available in the OPCDA.NET Professional Edition only. This is the time limit in milliseconds for the OPC server call handling. The default is 10 seconds. If the server call does not return within this time limit then the GeneralError handling method is called with a TIMEOUT error indication. The server access thread may continue to wait for the server call to finish or timeout. Further requests are not being handled before this happens. |
Public Methods
| Name | Description | |
|---|---|---|
 | BrowseDA23Servers | Available in the OPCDA.NET Professional Edition only. The OPC DA V2 and OPC DA V3 servers installed on the specifiecd machine are returned as a string array argument of the completion handler. |
| BrowseDA2Servers | Available in the OPCDA.NET Professional Edition only. The OPC DA V2 servers installed on the specifiecd machine are returned as a string array argument of the completion handler. |
| BrowseServers | Available in the OPCDA.NET Professional Edition only. The specified types of OPC servers installed on the specifiecd machine are returned as a string array argument of the completion handler. |
| Dispose | The request handling thread is terminated. This method must be called for the application to terminate properly. |
 | RevertToSelf | Win32 security handling method. |
Protected Methods
Public Events
| Name | Description | |
|---|---|---|
 | GeneralError | Available in the OPCDA.NET Professional Edition only. This event handler is called when an error occurs and the user did not specify a completion handler in the request. It is also called when a request handling timeout occurs. In this case it's called even with a user completion handler specified. The request completion handler will be called when the request handling finally terminates. This may be after a much longer time limit. |