主题：请教:合并数据的问题.

Dim cmd As New SQLCommand
Dim dt As DataTable
cmd.C
cmd.CommandText = "SELECT * From {员工}"
dt = cmd.ExecuteReader()
For Each dr As DataRow In dt.DataRows
    If DataTables("员工").Find("sfzhm = '" & dr("身份证号") & "'") Is Nothing Then
        Dim nr As DataRow = DataTables("员工").AddNew()
        For Each dc As DataCol In dt.DataCols
            nr(dc.name) = dr(dc.name)
        Next
    End If
Next

 

以上代码是:合并数据源名称为"text" 中的 "员工"表到本项目中的:"员工" 表
且条件是"身份证号码"相同时,则跳过....

 

而以下这个代码:

Dim Book As New XLS.Book("c:\test\订单.xls")
Dim Sheet As XLS.Sheet = Book.Sheets(0)
Tables("订单").StopRedraw()
'注意以下数组中列名称的顺序,必须和Excel表中的列顺序一致
Dim nms() As String = {"产品","客户","雇员","单价","折扣","数量","日期"}
'注意下面的循环变量从1开始，而不是从0开始，因为Excel表的第一行是标题
For n As Integer = 1 To Sheet.Rows.Count -1
    Dim r As Row = Tables("订单").AddNew()
    For m As Integer = 0 To nms.Length - 1
         r(nms(m)) = Sheet(n,m).Value
    Next
Next
Tables("订单").ResumeRedraw()

能否给它增加一个条件,当订单编号相同时,则跳过.

 

由于太多

 

Dim Book As New XLS.Book("c:\test\订单.xls")
Dim Sheet As XLS.Sheet = Book.Sheets(0)
Tables("订单").StopRedraw()
Dim nms() As String = {"订单编号","产品","客户","雇员","单价","折扣","数量","日期"}
'注意下面的循环变量从1开始,而不是从0开始,因为Excel表的第一行是标题
For n As Integer = 1 To Sheet.Rows.Count -1
    If DataTables("订单").Find("sfzhm = '" & sheet(n,0).Text & "'") Is Nothing Then
        Dim r As Row = Tables("订单").AddNew()
        For m As Integer = 0 To nms.Length - 1
            r(nms(m)) = Sheet(n,m).Value
        Next
    End If
Next
Tables("订单").ResumeRedraw()

 首先要确定你Excel的订单编号的列在第几列，才能写代码。

Dim Book As New XLS.Book("c:\test\订单.xls")
Dim Sheet As XLS.Sheet = Book.Sheets(0)
Tables("订单").StopRedraw()
'注意以下数组中列名称的顺序,必须和Excel表中的列顺序一致
Dim nms() As String = {"订单编号", "产品","客户","雇员","单价","折扣","数量","日期"}
'注意下面的循环变量从1开始,而不是从0开始,因为Excel表的第一行是标题
For n As Integer = 1 To Sheet.Rows.Count -1
    If DataTables("订单").Find("订单编号 = '" & sheet(n, 0).Value & "'") Is Nothing Then
        Dim r As Row = Tables("订单").AddNew()
        For m As Integer = 0 To nms.Length - 1
            r(nms(m)) = Sheet(n,m).Value
        Next
    End If
Next
Tables("订单").ResumeRedraw()

狐爸,如果需要合并DBF文件的话,同时也是根据身份证号码如果相同,则跳过行.应该怎么写呢

Dim mg As New Merger
mg.SourcePath = "D:\SJY\" '指定数据文件所在目录
mg.Format = "dbase" '指定格式
mg.SourceTableName = "123" '指定要合并的dbase文件,无需扩展名
mg.DataTableName = "xsxxb" '指定接收数据的表
mg.Merge()

 单一条件合并，需要自己编写代码完成。参考

 http://www.foxtable.com/help/topics/2137.htm