String Format for DateTime?

Posted on 2013-06-07
Last Modified: 2013-06-10
Can somebody please help me understand why I am getting this error when I try to format a smalldatetime field from SQL to a string formatted date time?

            Dim selectCommand6 As New SqlCommand("SELECT BarCode, BeginDate, Species, Notes, Owner, WaterCode FROM StakePrint WHERE Owner=@UID", stConPrint)
            selectCommand6.Parameters.AddWithValue("UID", sUID)

            Dim sw As New StreamWriter(HttpContext.Current.Server.MapPath("LabelFiles/Stakes/test.txt"))

            Dim stDataReader2 As SqlDataReader = selectCommand6.ExecuteReader
            'any rows returned?
            If Not stDataReader2.HasRows Then
                'no rows returned
                'lblTest2.Text = "NO RECORDS"
                'rows returned
                'lblTest2.Text = "RECORDS"
                Dim fields As Integer = stDataReader2.FieldCount - 1
                Dim sFieldName As String
                Dim sep As String = ","
                While stDataReader2.Read()
                    Dim i As Integer = 0
                    Dim sb As New StringBuilder()
                    While i <= fields
                        sFieldName = stDataReader2.GetName(i)
                        If sFieldName = "BarCode" Then
                            sb.Append(stDataReader2(i).ToString() + sep)
                        ElseIf sFieldName = "BeginDate" Then
                            sb.Append(stDataReader2(i).ToString("M/d/yyyy") + sep)
                        ElseIf sFieldName = "Notes" Then
                            sb.Append(stDataReader2(i).ToString() + sep)
                        ElseIf sFieldName = "Owner" Then
                            sb.Append(stDataReader2(i).ToString() + sep)
                        ElseIf sFieldName = "WaterCode" Then
                        End If
                        i = i + 1
                    End While
                End While
            End If

            'close StreamWriter

            'close dataREADER

Open in new window

Question by:Ahelbling
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
  • 2
LVL 10

Expert Comment

ID: 39231035
Because when you get datetime from SQL database, it is going to be with date and time displaying time as many zeros with semi-colons. System won't identify as date in VB.

Do this:
Dim Datestring as string
Datestring = Format(CDate(stDataReader2(i)), "M/d/yyyy")
LVL 20

Expert Comment

ID: 39232501
I would guess that you are getting blanks/null in the date column.
LVL 10

Expert Comment

ID: 39232813
Looking at the error message, there's data, just that datatype was not correct as expected and this way of format doesn't work and resulted that the string converted, instead of a date is actually ‘M/d/yyyy' and system attempted to cast as integer.
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!


Author Comment

ID: 39233535
Any suggestions on how to accomplish this?
LVL 20

Expert Comment

ID: 39233643
What dateformat is returned by the database? Is it dd-mm-yyyy?

If it is it is possible tht you are getting a date greater than 12.

Author Comment

ID: 39233651
Exactly what is stored in the SQL table is what is displayed without any formatting performed.  It is a smalldatetime field.  Date-hours-mins-seconds
LVL 10

Accepted Solution

adriankohws earned 500 total points
ID: 39233654
This doesn't work for you?

Datestring = Format(CDate(stDataReader2(i)), "M/d/yyyy")

Author Comment

ID: 39233663
I will try that - thanks

Featured Post

Enroll in June's Course of the Month

June’s Course of the Month is now available! Experts Exchange’s Premium Members, Team Accounts, and Qualified Experts have access to a complimentary course each month as part of their membership—an extra way to sharpen your skills and increase training.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Just a quick little trick I learned recently.  Now that I'm using jQuery with abandon in my applications, I have grown tired of the following syntax:      (CODE) I suppose it just offends my sense of decency to put inline VBScript on a…
Problem Hi all,    While many today have fast Internet connection, there are many still who do not, or are connecting through devices with a slower connect, so light web pages and fast load times are still popular.    If your ASP.NET page …
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor ( Top Charts is a view in which you can set seve…

718 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question