Accessing Field Values with the Default Dataset Property
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The most general method for accessing a field's value is to use Variants with the FieldValues property. For example, the following statement puts the value of an edit box into the CustNo field in the Customers table:
Customers.FieldValues['CustNo'] := Edit2.Text;
Customers->FieldValues["CustNo"] = Edit2->Text;
Because the FieldValues property is of type Variant, it automatically converts other datatypes into a Variant value.