IF Statement by EVAL()

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VB

ASP.NET

Dear all,

I am a beginner and I want to ask a question regarding IF statement for EVAL("field").

Here is my code in .ASPX

<asp:ListView ID="ListView1" runat="server">
            <LayoutTemplate>
                <table>
                    <div runat="server" id="itemPlaceholder" />
                </table>
            </LayoutTemplate>
	        <ItemTemplate>
                <tr>
                    <% If Eval("ds_SingleDouble") = "S" Then%>
                        <td><%#Eval("cd_Player11")%></td>
                        <td>&nbsp;vs&nbsp;</td>
                        <td><%#Eval("cd_Player21")%></td>
                    <% Else%>                        <td><%#Eval("cd_Player11")%>/<%#Eval("cd_Player12")%></td>
                        <td>&nbsp;vs&nbsp;</td>                        <td><%#Eval("cd_Player21")%>/<%#Eval("cd_Player22")%></td>
                    <% End If%>
                   </tr>
            </ItemTemplate></asp:ListView> 
<asp:ListView ID="ListView1" runat="server">

//My code in .ASPX.VB
    Private Sub getData()
        Dim adoDataSet As DataSet
        Dim champAdapter As SqlDataAdapter
        Dim cmdSql As String = "SELECT *, ds_SingleDouble FROM tbl_ChampionshipDetail, tbl_Discipline "
        cmdSql = cmdSql + "WHERE cd_ChampionshipID = " + Request.QueryString("id") + " AND cd_Qualification = 'SF'"
        cmdSql = cmdSql + " AND cd_DisciplineID = ds_ID"
        connectie.Open()
        adoDataSet = New DataSet()
        Dim cmd As SqlCommand = New SqlCommand(cmdSql, connectie)
        champAdapter = New SqlDataAdapter(cmd)
        champAdapter.Fill(adoDataSet, "tbl_Championship")
        connectie.Close()
        ListView1.DataSource = adoDataSet
        ListView1.DataBind()
    End Sub

When I run the code, I get an error:
Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control.

The error is by the line where the IF statement take place: <% If Eval("ds_SingleDouble") = "S" Then%> in .ASPX code

Can anybody help me please?
Thanks in advance,
Juliando