excel文件导入 如何实现导入前进行判断 如果表中已经有相同姓名且所在单位相同的数据 就不新增 直接覆盖数据 如果没有就新增数据
代码如下：（如何增加判断呢？请各位老师指导下！谢谢！）
Dim dlg As New OpenFileDialog
dlg.Filter = "Excel文件|*.xls;*.xlsx"
If dlg.ShowDialog =DialogResult.OK Then
Dim t As Table = Tables("干警信息")
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("姓名 = '" & 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
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Post By：2019/5/31 19:13:00 [只看该作者]
