dOPC Client Toolkit Help file
TdOPCGroup.XMLHoldtime Property
__published: __property int XMLHoldtime;
int XMLHoldtime;
Visual Basic
Property XMLHoldtime() As Integer

XMLHoldtime (milliseconds) instructs the server to hold off returning from refreshing calls until the specified time is reached.

For further information please read chapter the "Subscription architecture" of the OPC XML DA specification. You can download the OPC XML DA specification from

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