Html decode does not decode image tags

Hello there,

I am having an issue decoding html text saved in the database and displaying it in a label. Everything else will decode other than the image tag.  For Example

<span style="background-color: #ff6633;"><b>Maxiums Prime</b></span> <img src="/newsletter/Images/events.jpg"><br>

Will decode to Maxiums Prime to bold and displays the red background color. But the image does not show and the tag<img src="/newsletter/Images/events.jpg"> is shown instead. How do I fix this so that both the text and image will display in the label? Here's my code.

Protected Sub contentload()
        Dim Myconn As New SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\nldb.mdf;Integrated Security=True;User Instance=True; MultipleActiveResultSets=True")
        Dim dr As SqlDataReader
        Dim maxval As Integer
        Dim curnl As Integer
        Dim htmltext As String


        Dim mycomm1 As New SqlCommand("SELECT MAX(ID) as MAXID from createnl", Myconn)

        myConn.Open()
        dr = mycomm1.ExecuteReader()
        Try
            While dr.Read()
                maxval = dr("MAXID")

            End While
            curnl = maxval
            Dim mycommand As New SqlCommand(("Select nlhtml from createnl where id = @maxval"), Myconn)
            mycommand.Parameters.AddWithValue("@maxval", maxval)


            dr = mycommand.ExecuteReader()
            While dr.Read()
                htmltext = dr("nlhtml")
                nlcontent.Text = HttpUtility.HtmlDecode(htmltext)
            End While
        Finally
            dr.Close()
            Myconn.Close()
        End Try
    End Sub

I have also tried

Server.htmlDecode(htmltext)

but it returns the output in the same way. I'm sure I must be missing something but I cannot figure it out. Please help!

Thank you in advance,

Sai.