The Useage of Input-class Objects and Control-class Objects Value Attribute in VFP

In the Visual FoxPro 6.0(abbreviated to VFP in the following),the value of input class and control class value attribute is often used in the programming ,and the value from different control value attribute has the important influence on such control operation as input ,edition and inquiry .This article introduces different values and their definitions of input class and control class value attribute in VFP,illustrating how to control the value of various fields by means of value attribute and how to solve the inconsistent between the value of the value attribute and the contents of various fields , so that the contents of various fields can be controlled in the VFP programming.