蓝老师，请教一下父表与子表同步加载问题父表和子表同步加载之三，采用AppendLoad来追载没有加载过的订单明细，避免了重复加载
If e.Table.Current IsNot Nothing Then
Dim Filter As String = "fa piao号码 = " & e.Table.Current("fa piao号码")
If DataTables("fa piao明细").Find(Filter) Is Nothing Then '如果对应的fa piao明细没有加载过
DataTables("fa piao明细").AppendLoad(Filter) '则追载此fa piao的fa piao明细
End If
End If
上面代码的“fa piao号码”列是整数型，问一下，“fa piao号码”列如是字符型，上面代码怎么改一下？
参考：
http://www.foxtable.com/webhelp/topics/1284.htm
Dim Filter As String = "fa piao号码 = '" & e.Table.Current("fa piao号码") & "'"