QuickOPC User's Guide and Reference
TopicRead Property (EasyDAClientHoldPeriods)



OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.DataAccess.Engine Namespace > EasyDAClientHoldPeriods Class : TopicRead Property
After an item read call, connection to an OPC item will be maintained at least for the time period specified here.
Syntax
'Declaration
 
<DataMemberAttribute()>
<DefaultValueAttribute(30000)>
Public Property TopicRead As Integer
'Usage
 
Dim instance As EasyDAClientHoldPeriods
Dim value As Integer
 
instance.TopicRead = value
 
value = instance.TopicRead
[DataMember()]
[DefaultValue(30000)]
public int TopicRead {get; set;}
[DataMember()]
[DefaultValue(30000)]
public:
property int TopicRead {
   int get();
   void set (    int value);
}
Remarks

This property is used by following client implementations:

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