主题：求助，代码导入文件。如何判断选错后文件内字段错误，并给出提示

Dim App As New MSExcel.Application

Dim Wb As MSExcel.WorkBook = App.WorkBooks.Open("D:\Report.xls")

Dim Ws As MSExcel.WorkSheet = Wb.WorkSheets(1)

Dim Rg As MSExcel.Range = Ws.UsedRange

For j As Integer = 1 To Rg.Columns.Count

    If Ws.Cells(1, j).value Like "*某列*" Then

        msgbox(“包含某列”)

    End If 

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