合并数据，参考代码

Dim dlg As New OpenFileDialog
dlg.Filter = "Excel文件|*.xls;*.xlsx"
If dlg.ShowDialog =DialogResult.OK Then
    Dim t As Table = Tables("表B")
    t.StopRedraw()
    Dim Book As New XLS.Book(dlg.FileName)
    Dim Sheet As XLS.Sheet = Book.Sheets(0)
    For n As Integer = 1 To Sheet.Rows.Count -1
        Dim r As DataRow = t.DataTable.Find("第一列 = \'" & sheet(n, 0).text & "\'")
        If r Is Nothing Then r = t.DataTable.AddNew()
        For i As Integer = 0 To sheet.Cols.Count -1
            Dim cname As String = sheet(0, i).text
            If t.Cols.Contains(cname) Then
                r(cname) = sheet(n, i).Text
            End If
        Next
    Next
    t.ResumeRedraw()
End If

 如果有问题，做个具体实例上传上来测试。

1、先把数据处理成正常的，执行下面代码

Dim t As Table = Tables("设备检修记录")
For Each c As Col In t.Cols
    For i As Integer = 1 To t.Rows.count-1
        If t.Rows(i).IsNull("名称") = False AndAlso (t.Rows(i).Isnull("工艺代号") OrElse t.Rows(i)("工艺代号") = t.Rows(i-1)("工艺代号")) Then
            If t.Rows(i).IsNull(c) Then
                t.Rows(i)(c.name) = t.Rows(i-1)(c.name)
            End If
        End If
    Next
Next

2、然后，你的模板，用这个

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点击浏览该文件:设备检修档案.xls