我想把一个控件封装起来.DateTimePicker
因为他的value的类型为DateTime所以不可以为Null
但是数据库里有一些日期是为空的.如离职日期
现在我写了一个类继承至DateTimePicker
使用public object Value覆盖了基类的Value方法
这样它就可以为NULL了.
在使用时.我使用的是绑定
private MDateTimePicker dtpQuotationDate;
this.dtpQuotationDate.DataBindings.Add("Value", this.bindingSource1, "QuotationDate");
但是他一直只使用我这个类Value的Set方法,不使用我这个类的Value的Get方法,还是调动Base.Value.不知道为什么啊 ,请各位高手指点.谢谢!
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