将TimeStamp插入VB / Oracle中的存储过程

Question

我有一个存储过程，它读入TimeStamp。 在我的程序中，我有一个DatePicker和一个TimePicker，然后我转换为一个String，格式与TimeStamp相同，即。 ＆＃34; timestamp＆＃39; 2009-09-09 09:30:25 CET＆＃39;＆＃34;

但是，尝试运行该过程时出现以下错误。

这是VB代码（前半部分基本上是将DatePicker值转换为TimeStamp格式的字符串）：

Dim cmd As New OracleCommand("SYSTEM.ADDSCREENING", ChooseTable.Connect())

    Dim timeStamp As String = "timestamp'2009-12-31 09:30:25 CET'"
    Dim dateRaw As String = dtpStartDate.Text
    Dim dateArray() As String = Split(timeStamp, "-")
    Dim dateYear As String = dateArray(0)
    Dim dateMonth As String = dateArray(1)
    Dim dateArray2() As String = Split(dateArray(2), " ")
    Dim dateDay As String = dateArray2(0)

    Dim timeRaw As String = dtpStartTime.Text
    Dim timeFinal As String = timeRaw + ":00 GMT"

    Dim timeStampFinal As String = dateYear + "-" + dateMonth + "-" + dateDay + " " + timeFinal + "'"

    cmd.CommandType = CommandType.StoredProcedure
    cmd.Parameters.Add("@SCREENID", Val(cboScreen.Text))
    cmd.Parameters.Add("@FILMID", Val(cboFilm.Text))
    cmd.Parameters.Add("@STARTTIME", timeStampFinal)

    Try
        cmd.ExecuteNonQuery()
        MsgBox("Record Added")
    Catch ex As Exception
        MsgBox(ex.Message)
    End Try
    RefreshDB()