Cannot Convert Type 'int' To 'System.Data.DataView'

I have the following SqlDataSource in my page:
<asp:SqlDataSource ID="sqlds" runat="server" ConnectionString="<%$ ConnectionStrings:cs %>"
    SelectCommand="SELECT [Quest1], [Quest2], [Quest3], [Quest4], [Quest5] WHERE ([QuestID] = @QuestID)">
    <SelectParameters>
        <asp:Parameter Name="QuestID" />
    </SelectParameters>
In my code I get the following error: "Cannot convert type 'int' to 'System.Data.DataView'", I don't understand why I am getting this error because I am casting my SqlDataSource as type DataView when passing it to my DataView type.
Code:

protected void Chart(string record)
    {
        System.Data.DataView dv = (System.Data.DataView)sqlds.SelectParameters.Add("QuestID", System.TypeCode.Int32, record); //Error line
       ...
       ...
       ...
}

If anyone could point me in the right direction I would be very grateful.