主题：奇怪的程序假死问题

这样的写法：

Dim ids As String
For Each dr As DataRow In DataTables("订单").DataRows
    ids = ids & "," & dr("订单ID")
Next
ids= ids.Trim(",")
DataTables("订单明细").LoadFilter = "订单ID In (" & ids & ")"
DataTables("订单明细").Load()

等效于：

DataTables("订单明细").LoadFilter = ""
DataTables("订单明细").Load()

遍历所有行意义何在？