JVCL Help:TJvCustomCsvDataSet.OnSetFieldData
JVCL Help: TJvCustomCsvDataSet.OnSetFieldData Event
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Event fired when field data is going to be updated from data aware control back into our Dataset.
Pascal
TJvCsvOnSetFieldData = procedure (Sender: TObject; UserTag: Integer; UserData: Pointer; FieldName: string; Value: string) ofobject;
propertyOnSetFieldData: TJvCsvOnSetFieldData;
Parameters
| Parameters | Description |
| FieldName | The field name we are being asked for? |
| Value | This is the new changed field value (encoded as a CSV string) which is being put into the CSV file. |
| UserData | The record's data (pointer) property. Perhaps this is the custom object that contains the actual data? |
| Sender | Description for this parameter |
| UserTag | The record's tag (integer) property |
Description
An OnSetFieldData 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 and when a change is made to the cached data, the change can also automatically be written to the place where the data really came from.
See Also
TJvCustomCsvDataSet.OnGetFieldData, TJvCustomCsvDataSet.GetUserTag, TJvCustomCsvDataSet.SetUserTag, TJvCustomCsvDataSet.GetUserData, TJvCustomCsvDataSet.SetUserData, TJvCustomCsvDataSet.SetAllUserData
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