[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] |
Activate the dataset: Fetch data into memory.
Source position: db.pas line 1657
public procedure TDataSet.Open; |
Open must be used to make the TDataset Active. It does nothing if the dataset is already active. Open initialises the TDataset and brings the dataset in a browsable state:
Effectively the following happens:
If the descendent class cannot fetch the data, or the data does not match the field definitions present in the dataset, then an exception will be raised.
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Is the dataset open or closed. |
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Current operational state of the dataset |
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Is the cursor at the beginning of the data (on the first record) |
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Indicates whether the last record has been reached. |
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Event triggered before the dataset is opened. |
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Event triggered after the dataset is opened. |