Question

我试图将不同的日期格式转换为适当的SQL DateTime格式并且出错。

我有一台客户端的机器，使用以下日期格式设置，＆＃34; dd-mm-yyyy＆＃34; （本地化是印度）

在VB.Net中使用Now（）时，会向后解析月份和日期。我尝试过以下代码，但却遇到转换错误。

    Dim Month As String = Nothing
    Dim Year As String = Nothing
    Dim Day As String = Nothing
    Dim Hour As String = Nothing
    Dim Minute As String = Nothing
    Dim Second As String = Nothing
    Dim strDate As String = Nothing
    Dim Date_to_SQL_DateTime As Date


    Month = DatePart(DateInterval.Month, Now()).ToString
    Year = DatePart(DateInterval.Year, Now())
    Day = DatePart(DateInterval.Day, Now())
    Hour = DatePart(DateInterval.Hour, Now())
    Minute = DatePart(DateInterval.Minute, Now())
    Second = DatePart(DateInterval.Second, Now())

    strDate = Month & “/” & Day & “/” & Year & “ “ & Hour & “:” & Minute & “:” & Second

    Date_to_SQL_DateTime = Date.ParseExact(strDate, "MM/dd/yyyy hh:mm:ss", CultureInfo.InvariantCulture)

strDate返回

1/24/2017 23:17

我收到的错误是

String was not recognized as a valid Datetime

Answer 1

请尝试以下操作。需要确保参数的格式与ParseExact函数中指定的格式相同。

Dim Month As String = Nothing
Dim Year As String = Nothing
Dim Day As String = Nothing
Dim Hour As String = Nothing
Dim Minute As String = Nothing
Dim Second As String = Nothing
Dim strDate As String = Nothing
Dim Date_to_SQL_DateTime As Date

Month = DatePart(DateInterval.Month, Now()).ToString("00")
Year = DatePart(DateInterval.Year, Now()).ToString("0000")
Day = DatePart(DateInterval.Day, Now()).ToString("00")
Hour = DatePart(DateInterval.Hour, Now()).ToString("00")
Minute = DatePart(DateInterval.Minute, Now()).ToString("00")
Second = DatePart(DateInterval.Second, Now()).ToString("00")

strDate = Month & "/" & Day & "/" & Year & " " & Hour & ":" & Minute & ":" & Second
Date_to_SQL_DateTime = DateTime.ParseExact(strDate, "MM/dd/yyyy hh:mm:ss", CultureInfo.InvariantCulture)

对外国使用Now（）

1 个答案: