OPC Studio User's Guide and Reference
ReadItemsChunkSize Property (_DARequestChunkingParameters)



OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.DataAccess.Optimization.ComTypes Namespace > _DARequestChunkingParameters Interface : ReadItemsChunkSize Property
Size of ReadMultipleItems request chunks. 0 for no chunking.
Syntax
'Declaration
 
<ValueLimitsAttribute(0, 2147483647)>
Property ReadItemsChunkSize As Integer
'Usage
 
Dim instance As _DARequestChunkingParameters
Dim value As Integer
 
instance.ReadItemsChunkSize = value
 
value = instance.ReadItemsChunkSize
[ValueLimits(0, 2147483647)]
int ReadItemsChunkSize {get; set;}
[ValueLimits(0, 2147483647)]
property int ReadItemsChunkSize {
   int get();
   void set (    int value);
}

Property Value

The default value of this property is 5000.

Exceptions
ExceptionDescription

The value of an argument is outside the allowable range of values as defined by the invoked method.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

Remarks

The chunking is made regardless of the target server (endpoint). This means that when multiple servers (endpoints) are involved in the operation, the effective chunk size per server (endpoint) may be smaller than the value of this parameter.

This member or type is for use from COM. It is not meant to be used from .NET or Python. Refer to the corresponding .NET member or type instead, if you are developing in .NET or Python.

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