Sub FillDown()
Dim xlApp As Excel.Application
Dim xlBook As Excel.Workbook
Dim xlSheet As Excel.Worksheet
Dim xlRange As Excel.Range
' 创建Excel应用程序实例并获取活动工作簿和工作表
Set xlApp = New Excel.Application
Set xlBook = xlApp.Workbooks.Open("path_to_your_excel_file.xlsx")
Set xlSheet = xlBook.Worksheets("Sheet1")