ISCLEAR Function (Automation)
Checks whether an Automation object has been created or cleared.
Syntax
Ok := ISCLEAR(Automation)
Parameters
Automation
Type: Automation
A variable that has previously been declared.
Property Value/Return Value
Type: Boolean
true if any of the following is true; otherwise, false:
The Automation variable has not been created. See CREATE Function (Automation).
The Automation variable has been cleared. See CLEAR Function.
The Automation variable has been assigned NULL by an Automation server.
Remarks
This function is not supported in the Microsoft Dynamics NAV Web client.
Example
The following example shows how you can use the ISCLEAR function. This example requires that you create the following variables.
| Name | DataType | Subtype |
|---|---|---|
| Document | Automation | 'Microsoft XML, V3.0'.DOMDocument |
| ReturnValue | Boolean | Not applicable |
ReturnValue := ISCLEAR(Document);
// ReturnValue will be TRUE.
CREATE(Document);
ReturnValue := ISCLEAR(Document);
// ReturnValue will be FALSE.
CLEAR(Document);
ReturnValue := ISCLEAR(Document);
// ReturnValue will be TRUE.