在我的 CSV 文件中，有“SharePoint 站点”列和其他一些列。我正在尝试将 ID 从“SharePoint Site”列中拆分出来，并将其放入名为“SharePoint ID”的新列中，但不确定如何执行此操作，因此如果我能获得任何帮助或建议，我将不胜感激。
$downloadFile = Import-Csv "C:\AuditLogSearch\New folder\Modified-Audit-Log-Records.csv"
(($downloadFile -split "/") -split "_") | Select-Object -Index 5
CSV 文件
SharePoint Site
Include:[https://companyname-my.sharepoint.com/personal/elksn7_nam_corp_kl_com]
Include:[https://companyname-my.sharepoint.com/personal/tzksn_nam_corp_kl_com]
Include:[https://companyname.sharepoint.com/sites/msteams_c578f2/Shared%20Documents/Forms/AllItems.aspx?id=%2Fsites%2Fmsteams%5Fc578f2%2FShared%20Documents%2FBittner%2DWilfong%20%2D%20Litigation%20Hold%2FWork%20History&viewid=b3e993a1%2De0dc%2D4d33%2D8220%2D5dd778853184]
Include:[https://companyname.sharepoint.com/sites/msteams_c578f2/Shared%20Documents/Forms/AllItems.aspx?id=%2Fsites%2Fmsteams%5Fc578f2%2FShared%20Documents%2FBittner%2DWilfong%20%2D%20Litigation%20Hold%2FWork%20History&viewid=b3e993a1%2De0dc%2D4d33%2D8220%2D5dd778853184]
Include:[All]
拆分后，它将显示在新列“SharePoint ID”下
SharePoint ID
2. elksn
3. tzksn
4. msteams_c578f2
5. msteams_c578f2
6. All