Question

Filtering ASP.NET DataList by an Expiration Date

Asked by: John0214

I am using an ASP.NET DataList connected to MS SQL Server to display a list of available training dates to our clients. I have a column named "expDate" in my database table with a datetime data type. The "expDate" represents the date a particular training date would no longer be listed in the DataList our client's see.

I would like to compare today's date with the expDate and not show the DataList item if the expDate is less than today's day. Is this possible with a DataList or should this be done with some other control?

I'm wondering if this can be done in the SQL SELECT statement, or if SQL Server itself should run a procedure every night that removes rows from the database, which I've never attempted.

Currently I've created a dataset that displays the training list by productID, databound it to the DataList, and am attempting to compare the dates, but I'm stuck as to where to go from there. Code is below, date-specific stuff is toward the bottom where I trail off.

If DateTime.Compare(ExpirationDate, DateTime.Now) < 0 Then ...

Again, if there is a better way to do this, I would be open to your suggestions. Thank you in advance for any help you can provide.

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim dsTraining As DataSet
        Dim conSqlTraining As SqlConnection
        dsTraining = New DataSet()
        Dim rbRegTraining As SqlDataAdapter
        conSqlTraining = New SqlConnection("Server="";Database="";UID="";PWD=""")
        rbRegTraining = New SqlDataAdapter("Select * From Training_Sessions", conSqlTraining)
        'rbReg.Fill(ds, "TrainingList")
 
        dsTraining = New DataSet()
 
        Dim queryTraining As String = "Select * From Training_Sessions WHERE productID=@productID ORDER BY sessionStartDate"
 
        Dim productID As String = Request.QueryString("productID").Replace("_", "")
        Dim selCmdTraining As New SqlCommand(queryTraining, conSqlTraining)
        selCmdTraining.Parameters.AddWithValue("@productID", productID)
        rbRegTraining.SelectCommand = selCmdTraining
        rbRegTraining.Fill(dsTraining, "TrainingList")
        Dim drTraining As DataRow
        drTraining = dsTraining.Tables(0).Rows(0)
        Dim ExpirationDate As DateTime = DirectCast(drTraining("expDate"), DateTime)
        DataListTraining.DataSource = dsTraining
        DataListTraining.DataBind()
        If DateTime.Compare(ExpirationDate, DateTime.Now) < 0 Then ...

                                  
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Asked On
2009-08-24 at 11:10:05ID24677460
Tags

ASP.NET

,

VB

,

MS SQL DB

,

DateTime

Topics

Programming for ASP.NET

,

MS SQL Server

,

VB Script

Participating Experts
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Points
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Comments
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Answers

 

by: samtran0331Posted on 2009-08-24 at 12:27:36ID: 25171545

Try using SQL's "GetDate" function (which returns the current date) and do it in your sql with:

SELECT * FROM Training_Sessions WHERE productID=@productID AND expDate >= GETDATE () ORDER BY sessionStartDate

                                              
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by: John0214Posted on 2009-08-25 at 19:07:54ID: 31619793

Thank you, sam!

20120131-EE-VQP-002

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