📄 tdataset_active.htm

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<span style="font-family:Helvetica,Arial; font-size:12pt; color:#000000"><b>TDataSet.Active
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<span style="font-family:Helvetica,Arial; font-size:10pt; color:#000000">Specifies whether or not a dataset is open.
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<b>property</b> Active: Boolean;
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<b>Description</b>
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Use Active to determine or set a dataset's connection to data in a database. When Active is False, the dataset is closed; the dataset cannot read data from or write data to the database. When Active is True, data may be read from and written to the database.
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Setting Active to True
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Triggers the BeforeOpen event handler if one is defined for the dataset.
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&nbsp;&nbsp;&nbsp;Sets the dataset state to dsBrowse.
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&nbsp;&nbsp;&nbsp;Opens a cursor into the dataset.
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&nbsp;&nbsp;&nbsp;Triggers the After Open event handler if one is defined for the dataset.
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If an error occurs while opening the dataset, dataset state is set to dsInactive, and the cursor is closed.
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An application must set Active to False before changing other properties that affect the status of the database or the controls that display data in an application.
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<b>Note:&nbsp;&nbsp;&nbsp;</b>Calling the Open method sets Active to True; calling the Close method sets Active to False.
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