C# 错误:从字符串转换日期和/或时间时转换失败
如何解决此错误 从字符串转换日期和/或时间时转换失败 我的SQL代码:C# 错误:从字符串转换日期和/或时间时转换失败,c#,sql-server-2008,C#,Sql Server 2008,如何解决此错误 从字符串转换日期和/或时间时转换失败 我的SQL代码: SELECT RTRIM(invoiceNo) as [Order No.], RTRIM(InvoiceDate) as [Order Date], RTRIM(SubTotal) as [SubTotal], RTRIM(VATPer) as [Vat+ST %], RTRIM(VATAmount) as [VAT+ST Amount], RTRIM(DiscountPer) as
SELECT
RTRIM(invoiceNo) as [Order No.],
RTRIM(InvoiceDate) as [Order Date],
RTRIM(SubTotal) as [SubTotal],
RTRIM(VATPer) as [Vat+ST %],
RTRIM(VATAmount) as [VAT+ST Amount],
RTRIM(DiscountPer) as [Discount %],
RTRIM(DiscountAmount) as [Discount Amount],
RTRIM(GrandTotal) as [Grand Total],
RTRIM(TotalPayment) as [Total Payment],
RTRIM(PaymentDue) as [Payment Due]
FROM
Invoice_Info
WHERE
InvoiceDate BETWEEN @d1 AND @d2
ORDER BY
InvoiceDate desc
我使用C中的SqlCommand调用它,添加以下参数:
cmd.Parameters.Add("@d1", SqlDbType.DateTime, 30, "InvoiceDate").Value = dtpInvoiceDateFrom.Value.Date;
cmd.Parameters.Add("@d2", SqlDbType.DateTime, 30, "InvoiceDate").Value = dtpInvoiceDateTo.Value.Date;
我认为必须从值中删除.Date,因为DateTimePicker.Value.Date只返回字段的日期部分 您还可以将参数更改为以下内容:
cmd.Parameters.Add("@d1", SqlDbType.DateTime).Value = dtpInvoiceDateFrom.Value;
cmd.Parameters.Add("@d2", SqlDbType.DateTime).Value = dtpInvoiceDateTo.Value;
我使用了下面的代码,但它不起作用,并且再次出现错误。如果InvoiceDate确实是datetime列,那么您可以在Select语句中从中删除RTRIM。如果我没有弄错的话,RTRIM只用于字符串值。然后重试sql语句。测试sql查询的另一个选项是从dtpInvoiceDateFrom.Value中获取值,并将其作为值添加到sql Management Studio中的查询中。这将允许您查看查询或参数中是否存在问题。