如下的代码如何改进才能在不新增行的情况下提取数据
For Each file As String In filesys .GetFiles("D:\数据存放")
If file.EndsWith(".xls") OrElse file.EndsWith(".xlsx") Then
Dim Book As New XLS.Book(file)
Dim Sheet As XLS.Sheet = Book.Sheets(0)
Dim dr As DataRow = DataTables("订单数据").AddNew
dr("零配件") = sheet(4,1).text
dr("件数") = sheet(4,3).text
dr("规格") = sheet(5,1).text
dr("厚度") = sheet(5,3).text
dr("颜色") = sheet(6,1).text
End If
Next