主题：【求助】日期格式统一

今天导入数据的时候遇到麻烦了，原始的日期当时有部分是手工录入，部分是OA系统导出的，但在excel表中无论怎么调整，导入的时候始终不能同时导入，请教各位大神指点，具体文件已作为附件上传。

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点击浏览该文件:日期格式统一.xlsx

 用代码

Dim dlg As New OpenFileDialog
dlg.Filter= "所有文件|*.*|Excel2003文件|*.xls|Excel2007文件|*.xlsx" '设置筛选器
If dlg.ShowDialog = DialogResult.Ok Then '如果用户单击了确定按钮
   
    MessageBox.Show("你选择的是:" & dlg.FileName,"提示")
    If MessageBox.Show("是否合并?","请确 认!",MessageBoxButtons.OKCancel,MessageBoxIcon.Question) = DialogResult.OK Then
        DataTables("表A").StopRedraw
       
        Dim App As New MSExcel.Application
        try
            Dim Wb As MSExcel.WorkBook = App.WorkBooks.Open(dlg.FileName)
            Dim Ws As MSExcel.WorkSheet = Wb.WorkSheets(1)
            Dim Rg As MSExcel.Range = Ws.UsedRange
            For n As Integer = 2 To rg.Rows.Count
                Dim ro As Row = Tables("表A").AddNew
                For i As Integer = 0 To Tables("表A").Cols.Count - 1
                    ro(i) = ws.Cells(n,i+1).Text
                Next
            Next
            MessageBox.Show("导入成功!","恭喜!")
        catch ex As exception
            msgbox(ex.message)
        finally
            DataTables("表A").ResumeRedraw
            app.quit
        End try
       
    End If
End If