update problem...

[shy_wani]

hi..
i wonder, what is wrong with my code? i want to let user update their previous question based on question number they selected.
i have a dropdownlist called qnum. when the qnum index changed, it should load respective question to textbox question.
however, i don't manage to update in the database as the updated question only appear in the page but the question was not being updated in the database.

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If Not Page.IsPostBack Then
            butDelete.Attributes.Add("onclick", "return confirm_delete();")
            sqlConn.Open()
            Dim surveyID As String = Request.QueryString("SurveyID")
            Dim queryString As String = "SELECT * FROM Survey Where SurveyID='" & surveyID & "';SELECT * FROM Question WHERE SurveyID='" & surveyID & "'"
            Dim sqlCommand As SqlCommand = New SqlCommand(queryString, sqlConn)
            Dim dataReader As SqlDataReader = sqlCommand.ExecuteReader()
            While dataReader.Read
                title.Text = dataReader("SurveyTitle").ToString
                description.Text = dataReader("SurveyDescription").ToString
            End While
            dataReader.NextResult()
            While dataReader.Read
                With qnum
                    .DataSource = dataReader
                    .DataTextField = "QuestionNum"
                    .DataValueField = "QuestionID"
                    .AutoPostBack = True
                    .DataBind()
                End With
            End While
            dataReader.Close()
            sqlConn.Close()
        End If
    End Sub

    Protected Sub qid_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)
        ConnDb(qnum.SelectedItem.Value)
    End Sub

    Protected Sub ConnDb(ByVal qnum As String)
        Dim surveyID As String = Request.QueryString("SurveyID")
        Session("sSurveyID") = surveyID
        sqlConn.Open()
        Dim viewAll As String = "SELECT * FROM Question Where SurveyID='" & surveyID & "' AND QuestionID='" & qnum & "'" 'AND QuestionID=qnum.SelectedValue
        Dim sqlviewAll As SqlCommand = New SqlCommand(viewAll, sqlConn)
        Dim read As SqlDataReader
        read = sqlviewAll.ExecuteReader()
        While read.Read
            question.Text = read("Question").ToString
        End While
        read.Close()
        sqlConn.Close()
    End Sub

    Private Sub butSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butSave.Click
        Try
            Dim strqnum As String = qnum.SelectedItem.Value
            Dim strquestion As String = question.Text.Trim

            Dim sql As String = "UPDATE Question SET Question='" & strquestion & "' WHERE QuestionNum='" & strqnum & "'"
            Dim mycmd As SqlCommand = New SqlCommand(sql, sqlConn)
            sqlConn.Open()
            mycmd.ExecuteNonQuery()
        Catch ex As Exception
            lblnotify1.Text = "The following database error occured:" + _
                      ex.Message()
            sqlConn.Close()
        End Try
    End Sub

please..somebody help!!!