dropdown data issue within a repeater

[mwhitlatch]

I have a repeater where the data is filtered by a param in the querystring. In the repeater I have a dropdown that needs to only show the data based upon the filter I set up in the datasource. I have a section below the dropdown where I can hardcode the filter param (item_id) but I need that hardcoded part to dynamically pass in the current items value. Thanks for any assistance

<!-- Repeater -->
<asp:Repeater ID="QueryString Repeater" runat="server" DataSourceID="C ategoryFilterby QueryStringObje ctDataSource">
<itemtemplate >
<!-- Dropdown -->
<asp:DropDownLi st ID="SizeDropDow nList" DataValueField= "size" runat="server" DataSourceID="S izeFilterSqlDat aSource">
</asp:DropDownLis t>
<%SizeFilterSql DataSource.Sele ctParameters["item_id"].DefaultValue = "2"; %>


<!-- Here are my datasources-->

<asp:ObjectData Source ID="CategoryFil terObjectDataSo urce" runat="server"
SelectMethod="G etSaleItemsbyCa tegory" TypeName="categ oryfilterTableA dapters.saleite msTableAdapter" OldValuesParame terFormatString ="original_{0}" >
<SelectParamete rs>
<asp:controlPar ameter ControlID="cate goryDropDown" Name="category" PropertyName="S electedValue" Type="String" />
</SelectParameter s>
</asp:ObjectDataS ource>
<asp:ObjectData Source ID="CategoryFil terbyQueryStrin gObjectDataSour ce" runat="server" OldValuesParame terFormatString ="original_{ 0}" SelectMethod="G etSaleItemsbyCa tegory"
TypeName="categ oryfilterTableA dapters.saleite msTableAdapter" >
<SelectParamete rs>
<asp:QueryStrin gParameter Name="category" QueryStringFiel d="category" Type="String" DefaultValue="a pparel" />
</SelectParameter s>
</asp:ObjectDataS ource>
&nbsp;
<asp:SqlDataSou rce ID="SizeFilterS qlDataSource" runat="server" ConnectionStrin g="<%$ ConnectionStrin gs:ConnectionSt ring %>"
SelectCommand=" SELECT sizes.size FROM saleitems INNER JOIN size_trans ON saleitems.item_ id = size_trans.item _id INNER JOIN sizes ON size_trans.size _id = sizes.size_id WHERE (saleitems.item _id = @item_id)">
<SelectParamete rs>
<asp:Paramete r DefaultValue="1 " Name="item_id" />
</SelectParameter s>
</asp:SqlDataSour ce>

[mwhitlatch]

Is there no one who has any ideas on this? Do I need to call a function or is there some way to grab the index of the current dataset?