SqlDateTime overflow when doing an data insert from webpage

[dougancil]

I have the following web page:

mports System.Data.SqlClient
Imports System.Data

Partial Class Default2
    Inherits System.Web.UI.Page
    Dim opnumber As String
    Dim exceptiondate As DateTime
    Dim stime As DateTime
    Dim etime As DateTime
    Dim hours As String
    Dim minutes As String
    Dim exceptioncode As String
    Dim submittedby As String
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        opnumber = CType(Session.Item("opnumber"), String)
        exceptiondate = CType(Session.Item("exceptiondate"), DateTime)
        stime = CType(Session.Item("starttime"), DateTime)
        etime = CType(Session.Item("endtime"), DateTime)
        hours = CType(Session.Item("hours"), String)
        minutes = CType(Session.Item("minutes"), String)
        exceptioncode = CType(Session.Item("exceptioncode"), String)
        submittedby = CType(Session.Item("submittedby"), String)

        opnumLabel.Text = opnumber
        exceptdateLabel.Text = exceptiondate
        starttimeLabel.Text = stime
        endtimeLabel.Text = etime
        hourdurLabel.Text = hours
        mindurLabel.Text = minutes
        codeLabel.Text = exceptioncode
        approvedbyLabel.Text = submittedby
    End Sub

    Protected Sub sqlsubmitButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles sqlsubmitButton.Click
        InsertRow()
    End Sub
    Public Sub InsertRow()
        Dim myConnectionString As String = "Initial Catalog=mdr;Data Source=xxxxx;uid=xxxxx;password=xxxxxx;"

        Dim myConnection As New SqlConnection(myConnectionString)
        Dim commandText As String = _
        "insert into Exceptions (employeenumber, exceptiondate, starttime, endtime, duration, code, approvedby) " & _
        "values(@employeenumber, @exceptiondate, @starttime, @endtime, @duration, @code, @approved)"

        Using connection As New SqlConnection(myConnectionString)
            Dim command As New SqlCommand(commandText, connection)

            command.Parameters.AddWithValue("@employeenumber", opnumber)
            command.Parameters.AddWithValue("@exceptiondate", exceptiondate)
            command.Parameters.AddWithValue("@starttime", stime)
            command.Parameters.AddWithValue("@endtime", etime)
            command.Parameters.AddWithValue("@duration", hours & " " & minutes)
            command.Parameters.AddWithValue("@code", exceptioncode)
            command.Parameters.AddWithValue("@approved", submittedby)

            Try

                connection.Open()
                Dim rowsAffected As Integer = command.ExecuteNonQuery()

            Catch ex As Exception
                myerrormessageLabel.Text = ex.Message
            End Try
            thankyouLabel.Text = "Your Data Has Been Submitted"
        End Using

    End Sub

    Protected Sub cancelinputButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cancelinputButton.Click
        Response.Redirect("Default.aspx")
    End Sub

and when I try to submit my data (which is):
Op #: 8451
Exception Date: 11/15/2010
Start Time: 11:00:00 AM
End Time: 12:00:00 PM
Duration: 1 hours 0 minutes
Reason: Approved Technical Reason
Submitted By: User

to my sql server, I get the following error:
SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM.

Can anyone tell me what may be causing this error?

Thank you,

Doug

[mzmishra]

This exception comes if datetime value is null.
Check u r parameter values.