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错误消息:System.InvalidCastException:从字符串“”转换为“Date”类型无效。System.InvalidCastException:从字符串“”转换为“Date”类型无效
Sub Main()
Dim OutApp As Object
Dim OutMail As Object
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim xlWorkSheet As Excel.Worksheet
Dim fecha As String
Dim proc As System.Diagnostics.Process
For Each proc In System.Diagnostics.Process.GetProcessesByName("EXCEL")
If proc.MainWindowTitle.Trim.Length = 0 Then
proc.Kill()
End If
Next
xlApp = New Excel.ApplicationClass
xlWorkBook = xlApp.Workbooks.Open("\\file.xlsm")
xlWorkSheet = xlWorkBook.Worksheets("Sheet")
Try
xlApp.Range("E41").Activate()
xlApp.Range("E4").Select()
xlWorkSheet.Range("E4").Select()
xlWorkSheet.Range("E4").Activate()
fecha = xlApp.ActiveCell.Value
Do While xlApp.ActiveCell.Value <> ""
'If (DateTime.Today - CDate(fecha)).Days = 180 Then
If (DateTime.Today - DateTime.ParseExact(fecha, "dd/mm/yyyy", CultureInfo.InvariantCulture)).Days = 180 Then
' --more lines ---
'...
End Sub
得到错误在这行:
Do While xlApp.ActiveCell.Value <> ""
出于某种原因,它似乎xlApp.ActiveCell.Value被视为日期,而不是字符串。
另一件事,这是比较今天和细胞值之间是否有6个月差异的正确方法吗?
If (DateTime.Today - DateTime.ParseExact(fecha, "dd/mm/yyyy", CultureInfo.InvariantCulture)).Days = 180
尝试xlApp.ActiveCell.Text – Steve