Re: Getting entries from an SQL database with datetime parameter
- From: "Rogas69" <rogas69@xxxxxxxxxxxxxxxx>
- Date: Thu, 19 May 2005 17:53:49 +0100
Hi Nick,
If you want to pass date to the function you have to verify if the parsed
format is what you want. You can use profiler to see exact form of the date
that is passed to database. On the other hand, you could use T-SQL CONVERT
funtion to convert date string into date time accordig to your needs. By the
way if there is a chance that someone will change default date format in
your database, you will run into troubles comparing date to string.
Peter
"Nick" <nick@xxxxxxxxxxxx> wrote in message
news:%23q8ZJNIXFHA.1148@xxxxxxxxxxxxxxxxxxxxxxx
>I have created a simple aspx page with a datagrid, a textbox and a button
>on it.
> I want the user to enter a date in the textbox press the button and return
> a list of items to the datagrid from an SQL database but I am having
> problems with the date selection.
>
> The field in the database is datetime format (dd-MM-yyyy hh:mm:ss)
> I expect the user to type in a specific date e.g. 10-05-2005 or
> 10/05/2005 and click the button.
>
> I have tested all the elements of the page and they all work. e.g. I've
> hard coded a query to populate the datagrid, tested that the button raises
> the event etc.
>
> But when I attempt to pass the date to the query via a parameter I either
> get an error or no data (even though I know it exists).
>
>
> The DateFrom variable is a String passed to the function. It is the value
> typed in to the textbox
>
> I've tried passing the value straight to the parameter as a string.
>
> dbParam_datefrom.ParameterName = "@datefrom"
> dbParam_datefrom.Value = DateFrom
> dbParam_datefrom.DbType = DbType.stringfixedlength
> dbCommand.Parameters.Add(dbParam_datefrom)
>
>
> And I've tried converting DateFrom to a DateTime object
>
> dbParam_datefrom.ParameterName = "@datefrom"
> dbParam_datefrom.Value = Convert.ToDateTime(DateFrom)
> dbParam_datefrom.DbType = DbType.DateTime
> dbCommand.Parameters.Add(dbParam_datefrom)
>
>
>
> My SQL query contains the code
>
> Dated>=@datefrom
>
> Dated is the database field with datetime format that I have in the WHERE
> clause
>
> Am I making a glaring novice mistake as I'm very new to .NET.
>
> Any help would be greatly appreciated as I'm really stuck.
>
> Thanks
> Nick
>
.
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