MySQL commands in vb code are not working

I've been trying to create a login page that will check if you're an administrator or a customer in my SQL data source. I am not sure why it can't understand the MySQLCommands. I added MySql.Data in the references but this doesn't seem to work.

ASPX

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <div id="registrerenbody">
    <asp:Login ID="wcAanmelden" runat="server" DestinationPageUrl="~/default.aspx" style="margin: 0 auto;" >

        <InstructionTextStyle Font-Italic="True" ForeColor="Black" />
        <LayoutTemplate>

           <div class="box" style="margin-left:auto;margin-right:auto;">
               <div id="boxlogo"></div>
                        <div class="contentLogin">
                                    <h3>Gebruiker Aanmelden</h3>
                                    <asp:textbox class="field" placeholder="Gebruikersnaam" onfocus="this.placeholder = ''" onblur="this.placeholder = 'Gebruikersnaam'" id="UserName" runat="server"></asp:textbox>
                                    <asp:RequiredFieldValidator ID="UserNameRequired" runat="server" ControlToValidate="UserName" ErrorMessage="User Name is required." ToolTip="User Name is required." ValidationGroup="wcAanmelden">*</asp:RequiredFieldValidator>
                                    <br>
                                    <asp:textbox class="field" placeholder="Paswoord" onfocus="this.placeholder = ''" onblur="this.placeholder = 'Paswoord'" id="Password" runat="server" textmode="Password"></asp:textbox>
                                    <asp:RequiredFieldValidator ID="PasswordRequired" runat="server" ControlToValidate="Password" ErrorMessage="Password is required." ToolTip="Password is required." ValidationGroup="wcAanmelden">*</asp:RequiredFieldValidator>
                                    <br>
                                    <asp:button class="btn" id="LoginButton" runat="server" commandname="Login" text="Aanmelden" validationgroup="wcAanmelden"></asp:button>        
                                    <br>
                                    <asp:Literal ID="FailureText" runat="server" EnableViewState="False"></asp:Literal>
                            </div>
                        </div>
        </LayoutTemplate>


</asp:Login>
     </div>
</asp:Content>

CodeBehind ASPX.VB

This is where for example: MySqlConnection and MySqlCommand have blue underlinement.

Public Class WebForm3
    Inherits System.Web.UI.Page
    Protected Sub wcAanmelden_Authenticate(sender As Object, e As AuthenticateEventArgs) Handles wcAanmelden.Authenticate
        Dim strUser As String = wcAanmelden.UserName
        Dim strPassword As String = wcAanmelden.Password
        Dim strSQL, strSQL2, strEmail As String
        Dim strNiveau As String
        Dim con As MySqlConnection = New MySqlConnection()
        con.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings("LoginConnectionString").ConnectionString

        strSQL = "SELECT name FROM employer WHERE (login= '" &
                        strUser & "' AND password = '" & strPaswoord & "')"
        Dim cmd As MySqlCommand = New MySqlCommand '(strSQL, con)
        cmd.Connection = con
            cmd.CommandText = strSQL
            con.Open()
            If cmd.ExecuteScalar() = Nothing Then
                strNiveau = ""
        Else
                strNiveau = "W"
        End If
        con.Close()
            If strNiveau = "" Then
                strSQL = "SELECT name FROM customers WHERE (login= '" &
                        strUser & "' AND password = '" & strPassword & "')"
                Dim cmd2 As MySqlCommand = New MySqlCommand '(strSQL, con)
                cmd2.Connection = con
                cmd2.CommandText = strSQL
                con.Open()
                If cmd2.ExecuteScalar() <> Nothing Then
                    strNiveau = "K"
                Else
                End If
            End If
        If strNiveau = "K" Then
            Dim con2 As MySqlConnection = New MySqlConnection()
            con2.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings("LoginConnectionString").ConnectionString
            strSQL2 = "SELECT email FROM customers WHERE (login= '" &
                        strUser & "' AND password = '" & strPaswoord & "')"
            Dim cmd3 As MySqlCommand = New MySqlCommand(strSQL2, con2)
            con2.Open()
            strEmail = cmd3.ExecuteScalar().ToString
            Session("Niveau") = strNiveau
            Session("Username") = strUser
            Session("Password") = strPassword
            Session("email") = strEmail
            con2.Close()
            FormsAuthentication.RedirectFromLoginPage(strUser, False)
        ElseIf strNiveau = "W" Then
            Dim con2 As MySqlConnection = New MySqlConnection()
            con2.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings("LoginConnectionString").ConnectionString
            strSQL2 = "SELECT email FROM employers WHERE (login= '" &
                        strUser & "' AND password = '" & strPassword & "')"
            Dim cmd3 As MySqlCommand = New MySqlCommand(strSQL2, con2)
            con2.Open()
            strEmail = cmd3.ExecuteScalar().ToString
            Session("Niveau") = strNiveau
            Session("Username") = strUser
            Session("Password") = strPassword
            Session("email") = strEmail
            con2.Close()
            FormsAuthentication.RedirectFromLoginPage(strUser, False)
        Else   
            wcAanmelden.FailureText = "Try again! Wrong input."
        End If
        con.Close()
    End Sub
End Class