检查VB.NET中是否存在Excel对象？

Question

检查VB.NET中是否存在Excel对象的好方法是什么？

我知道在VBA中我可以写一些类似的东西：

Sub TestifTableExists(name) as boolean
    dim exists as range
    On Error Resume Next
    Set exists = ActiveSheet.listobject(name).range
    On Error Goto 0
    if exists is nothing
        TestifTableExists= false
    else
        TestifTableExists= true
    end if
end sub

但是现在我正在过渡到VB.NET，并认为也许有更好的方法可以在VB.NET中进行。

Answer 1

Microsoft.Office.Interop.Excel.Worksheet中有一个ListObjects函数

    Dim wb As Microsoft.Office.Interop.Excel.Workbook
    Dim ws As Microsoft.Office.Interop.Excel.Worksheet
    Dim xl As New Microsoft.Office.Interop.Excel.Application

    wb = xl.Workbooks.Open(FileNameWithPath)
    ws = wb.ActiveSheet
    ws.ListObjects(Index As Object)