来自ASP.NET的SQL Server存储过程中的日期参数

Question

I've written an SQL Server stored procedure that, amongst other things, accepts a date parameter:

CREATE PROCEDURE data.addScore
    ... (some parameters),
    @testDate date
AS

On an ASP.NET page I have a textbox with a Calender Extender control (from the AJAX Toolkit) that allows the user to select a date; the date is stored in the textbox in the format DD/MM/YYYY . I have some code that is supposed to execute the stored procedure with the parameters, using the date value from the textbox:

cmd.Parameters["@testDate"].Value = Convert.ToDateTime(((TextBox)li.FindControl("date")).Text);

I know I can definitely get to the textbox's value using ((TextBox)li.FindControl("date")).Text , but for the life of me I can't get it into a format that doesn't throw up one of a few errors, mainly 'Input string was not in the correct format'.

When I run the stored procedure directly on the server I usually bind the parameter like @testDate = 'YYYYMMDD' .

Answer 1

I would suggest you don't store anything in the textbox using regional, ambiguous formats like dd/mm/yyyy. If you use an unambiguous format like YYYYMMDD, you're not going to have any issues. And if users are picking from a calendar control or something, it should be easy to separate the date you present to them from the date you pass to the database.

Answer 2

<asp:Textbox id="date" runat="Server"></asp:Textbox>

<cc1:CalendarExtender ID="calwhendate" runat="server" Enabled="true" Format="YYYYMMDD"
TargetControlID="date"></cc1:CalendarExtender>

Change your Ajax Calendar Control to your desired format