[英]ORA-01843: not a valid month — working on DB but not when doing the same on asp.net web pages
I'm trying to insert a record into the DB via asp.net C# web page using 'add button'. 我正在尝试使用“添加按钮”通过asp.net C#网页将记录插入数据库。 The date format on my DB is 'dd/MON/yyyy'. 我的数据库上的日期格式为“ dd / MON / yyyy”。 the isert statement works fine on my DB but it doesnt in asp.net. isert语句在我的数据库上工作正常,但是在asp.net中却没有。
On my DB:: WORKS FINE! 在我的DB上::很好!
INSERT INTO EVENT (RES_ID,EMP_ID,PHONE_NUMBER,EVENT_DT,TIME_SLOT)
values (null,100,'123-123-1233','01/Oct/2012','08:00 PM - 12:00 AM');
Om myaspx.cs page:: THROWS THE ERROR ""Error inserting record! OM myaspx.cs页面::引发错误“”插入记录时出错! ORA-01843: not a valid month"" on the webpage. ORA-01843:网页上的有效月份“”无效。
string insertSQL;
insertSQL = "insert into event (res_id,emp_id,phone_number,event_dt,time_slot) ";
insertSQL += " values (:res_id,:emp_id,:phone_number,:event_dt,:time_slot)";
OracleConnection con = new OracleConnection(connectionString);
OracleCommand cmd = new OracleCommand(insertSQL, con);
cmd.Parameters.Add(":emp_id", cboResOrEmpName.SelectedValue);
cmd.Parameters.Add(":res_id", null);
cmd.Parameters.Add(":phone_number", txtContactNo.Text);
cmd.Parameters.Add(":time_slot", rblTimeSlot.Text);
cmd.Parameters.Add(":event_dt", txtEvtDt.Text);
// Try to open the database and execute the update.
int added = 0;
try
{
con.Open();
added = cmd.ExecuteNonQuery();
lblResults.Text = added.ToString() + " record added!";
}
catch (Exception err)
{
lblResults.Text += "Error inserting record! ";
lblResults.Text += err.Message;
}
finally
{
con.Close();
}
I used a textbox for the event date with AJAX caledar extansion. 我使用带有AJAX日历扩展的事件日期文本框。 Following is its definition. 以下是其定义。
<asp:TextBox ID="txtEvtDt" runat="server"></asp:TextBox>
<asp:CalendarExtender ID="txtEvtDt_CalendarExtender" runat="server"
TargetControlID="txtEvtDt" Format="dd/MMM/yyyy">
</asp:CalendarExtender>
Please help me understand the problem. 请帮助我理解问题。 Any help is greatly appreciated. 任何帮助是极大的赞赏。 Thank you! 谢谢!
希望这会起作用
cmd.Parameters.Add(":event_dt", DateTime.ParseExact(txtEvtDt.Text, "dd/MMM/yyyy", CultureInfo.InvariantCulture));
Your SQL statement works fine on your database presumably because DD/Mon/YYYY
is the default date format for whatever program you use to connect to Oracle (SQL*Plus, SQL Developer, TOAD, PL/SQL Developer, etc.) Presumably when ASP.NET connects to the database it doesn't use the same default date format. 您的SQL语句可以在数据库上正常运行,大概是因为DD/Mon/YYYY
是用于连接到Oracle的任何程序(SQL * Plus,SQL Developer,TOAD,PL / SQL Developer等)的默认日期格式。 .NET连接到数据库,它不使用相同的默认日期格式。
I'd recommend not relying on automatic conversion between dates and strings. 我建议不要依赖日期和字符串之间的自动转换。 If you're converting between dates and strings, always be explicit about it. 如果要在日期和字符串之间进行转换,请始终对其明确。 Use TO_DATE(some_string, 'DD/Mon/YYYY')
to convert a string to a date, and TO_CHAR(some_date, 'DD/Mon/YYYY')
to convert a date to a string. 使用TO_DATE(some_string, 'DD/Mon/YYYY')
将字符串转换为日期,并使用TO_CHAR(some_date, 'DD/Mon/YYYY')
将日期转换为字符串。
So, in your insertSQL
string, I'd recommend replacing :event_dt
with TO_DATE(:event_dt, 'DD/Mon/YYYY')
. 因此,在您的insertSQL
字符串中,建议您将:event_dt
替换为TO_DATE(:event_dt, 'DD/Mon/YYYY')
。
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