SqlDataSource - Filter By Selection From Listbox - WHERE ([Name] IN ('Alaska','alabama'))

I have a listbox and SqlDataSource. 

I am not sure how to take the multiple value that are selected in listbox and use it to generate a sqlquery.
Below I have shown that if I hard code it in the Command statement it works but I not sure how to take it from a variable or the listbox.

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<asp:ListBox ID="ListBox1" runat="server" DataSourceID="SqlDataSource1" DataTextField="Name"

DataValueField="Name" SelectionMode="Multiple" Width="341px"></asp:ListBox>

 

<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"

SelectCommand="SELECT classifieds_Ads.Id, classifieds_Ads.MemberId, classifieds_Ads.CategoryId, classifieds_Ads.Title, classifieds_Ads.Description, classifieds_Categories.Name, classifieds_Ads.Price, classifieds_Ads.Location, classifieds_Ads.ExpirationDate, classifieds_Ads.DateCreated FROM classifieds_Ads INNER JOIN classifieds_Categories ON classifieds_Ads.CategoryId = classifieds_Categories.Id WHERE ([Name] IN ('ALASKA','alabama'))">

<SelectParameters>

<asp:ControlParameter Name="Name" ControlID="listbox1" PropertyName="SelectedValue" />

</SelectParameters>

</asp:SqlDataSource>

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