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WebClientIsReady - property of the PmaDataTable object

Description:
Detects whether the object is ready to write/read to Web server. In this case the PmaDataTable object is the Web client.
Syntax:
Boolean WebClientIsReady
Values:
true - the object is ready to transfer the Web data (i.e. the ReadFromWeb or WriteToWeb method can be called)
false - the object is not ready to transfer the data (the data from the previous calling the referred methods is still transferring)
Note:
Property access for read only.

This method is not functional for PmFree.

 
The object gets in the transfer of data state by the ReadFromWeb or WriteToWeb method. During the transfer these methods cannot be re-called over the object and the WebClientIsReady property then returns the value false.

After the transfer (i.e. after the onEndOfTransfer event is triggered) the methods can be called again and the WebClientIsReady returns the value true.

Example:
JavaScriptVBScriptSelect and copy to clipboard

var oDataTable = pMe.Pm("/DataTable");
if (oDataTable.WebClientIsReady)
oDataTable.ReadFromWeb("http://compX/temperatures/data.xml?fmt=purevalue");
else
Pm.Debug("Web client is not ready (is still active)");
PROMOTIC 9.0.13 SCADA system documentation - MICROSYS, spol. s r.o.

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