If e.DataCol.name = "日期" Then If e.newvalue = Nothing Then e.DataRow("日期二")= Nothing Else If e.NewValue.length = 8 Then Dim d As Date = new Date(e.NewValue.Substring(0,4), e.newvalue.substring(4,2), e.newvalue.substring(6,2)) e.DataRow("日期二")= d End If End If