OPC Studio User's Guide and Reference
GetControlValue Method (IValueControl)



OpcLabs.BaseLib Assembly > OpcLabs.BaseLib.ComponentModel Namespace > IValueControl Interface : GetControlValue Method
Gets the current value of the control.
Syntax
'Declaration
 
<CanBeNullAttribute()>
Function GetControlValue() As Object
'Usage
 
Dim instance As IValueControl
Dim value As Object
 
value = instance.GetControlValue()
[CanBeNull()]
object GetControlValue()
[CanBeNull()]
Object^ GetControlValue(); 

Return Value

Returns the current value of the control.

This method can return null (Nothing in Visual Basic).

Remarks

The control's value can be null even in controls that are not nullable (their IsNullable is false).

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

See Also