JVCL Help:TJvCsvDataSet.OnGetFieldData

 JVCL Help: TJvCsvDataSet.OnGetFieldData Event

TJvCsvDataSet

► TJvCsvDataSet Events

[+] TJvCsvDataSet Events

► TJvCsvDataSet Properties

[+] TJvCsvDataSet Properties

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Summary

Event fired when field data is going to be provided to a data aware control.

Pascal

 propertyOnGetFieldData: TJvCsvOnGetFieldData;

Parameters

Parameters	Description
Sender	Description for this parameter
UserTag	The record's tag (integer) property
UserData	The record's data (pointer) property. Perhaps this is the custom object that contains the actual data?
FieldName	The field name we are being asked for?
Value	var parameter - This is where you put the actual value (encoded as a CSV string) to be provided to the data aware control.

Description

An OnGetFieldData event written by the end user allows the end user to create a Virtual DataSet where the data in the CSV rows is really just a cache which can be updated when displayed but which we really are fetching from somewhere else.

See Also

TJvCustomCsvDataSet.OnSetFieldData, TJvCustomCsvDataSet.GetUserTag, TJvCustomCsvDataSet.SetUserTag, TJvCustomCsvDataSet.GetUserData, TJvCustomCsvDataSet.SetUserData

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