主题：请教XML导入时遇到日期字段为空的问题

思路：用高速导入，然后再编写代码合并两表的数据

http://www.foxtable.com/webhelp/scr/0680.htm

那你就用代码直接合并吧，参考

Dim xmlDoc As New System.XML.XmlDocument
Dim dlg As new OpenFileDialog
If dlg.ShowDialog = DialogResult.OK Then
    xmlDoc.Load(dlg.FileName)
    Dim ndList As System.XML.XmlNodeList = xmlDoc.GetElementsByTagName("表A")
    For i As Integer = 0 To ndList.count - 1
        Dim nr As DataRow = DataTables("表A").AddNew
        For Each dc As DataCol In DataTables("表A").datacols
            If ndList(i).Item(dc.name) IsNot Nothing Then
                nr(dc.name) = ndList(i).Item(dc.name).InnerText
            End If
        Next
    Next
End If