Repeater - Multiple Datasources?

I need to set a Repeater.Datasource to one of three stored procedures depending on what button the user selects.  How do I set it up please?

<asp:SqlDataSource ID="SqlDataSource5" runat="server" ConnectionString="<%$ ConnectionStrings:ABCConnectionString %>"
SelectCommand="???????????????" SelectCommandType="StoredProcedure">
<SelectParameters>
<asp:ControlParameter ControlID="???????????????????" Name="?????????????" PropertyName="Text" Type="string" />
</SelectParameters>
</asp:SqlDataSource>

 protected void btnKeyWordSearch_Click(object sender, ImageClickEventArgs e)
{
    mode = 1;
    StoredProcdureName = "KWSearch";
    KWords = tbxKWordText.Text;
}
protected void btnCompanyNameSearch_Click(object sender, ImageClickEventArgs e)
{
    mode = 1;
    StoredProcdureName = "NAMESearch";
    CoName = tbxCoNameText.Text;
}
protected void btnBrandNameSearch_Click(object sender, ImageClickEventArgs e)
{
    mode = 1;
    StoredProcdureName = "BRANDSearch";
    Brand = tbxBrandText.Text;
}