AFAdmin.EnableExternalDataTables Method
- Last UpdatedNov 18, 2025
- 3 minute read
- PI System
- AF SDK 2024 R2
- Developer
Enables support for an AFTable to link to an external source.
Namespace: OSIsoft.AF.Diagnostics
Assembly: OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version: 3.1.1.1182
Syntax
public static void EnableExternalDataTables( PISystem system, bool enable )
Public Shared Sub EnableExternalDataTables ( system As PISystem, enable As Boolean ) Dim system As PISystem Dim enable As Boolean AFAdmin.EnableExternalDataTables(system, enable)
public: static void EnableExternalDataTables( PISystem^ system, bool enable )
static member EnableExternalDataTables : system : PISystem * enable : bool -> unit
Parameters
- system
- Type: OSIsoft.AFPISystem
The operation will be performed on the specified PISystem. - enable
- Type: SystemBoolean
Specify to enable support an AFTable to link to an external source; otherwise specify to disable this feature.
Exceptions
| Exception | Condition |
|---|---|
| SecurityException | This exception is thrown when attempting to execute without Admin security rights. |
| ArgumentNullException | This exception is thrown when attempting to execute on a PISystem that is null or deleted. |
| NotSupportedException | This exception is thrown when attempting to execute on a PISystem that does not support the AdminFunctionality feature. |
Remarks
This method is used to enable or disable the ExternallyLinkedTable feature in the PI AF SQL Server database. This feature controls support for allowing an AFTable to link to an external source. See LinkExternal(IDbDataAdapter, Boolean, SecureString) for more details.
Use the PISystem.Supports method to check if the PISystem supports the AdminFunctionality feature.
 Security Note |
|---|
| Requires the Admin right to execute. |
 Notes to Callers |
|---|
| This method will error on servers before AF 2018 R2 (2.10.5). |