Specifies the field from which the edit control displays data.
property DataField: String;
Set DataField to the field name of the field component that the check box represents:
DBEditEh1.DataField := 'Company';
Access by the TCustomDBEditEh to the dataset in which the field is located is provided by a TDataSource component, specified in the DataSource property.
If the DataField refers to a database field that contains integer or floating-point data, only characters that are valid in such a field can be entered in the edit box. Characters that are not legal are not accepted.
If DataField and DataSource properties are empty then the control works in non data-aware mode and writes data in internal variable.
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