Can't Remember How To Pass Int Value To Datasource

I have know this error but have completely forgotten how to take care of it.  How do I pass the integer values to the SQL statement?

ERROR: Syntax error converting the nvarchar value 'Label' to a column of data type int.

WHERE (LinkInfo.L_State = @State) AND (LinkInfo.CG_ID > @CatIDLow) AND  (LinkInfo.CG_ID > @CatIDHigh)

<SelectParameters>
            <asp:ControlParameter ControlID="TextBox1" Name="State" PropertyName="Text" />
            <asp:ControlParameter ControlID="Label2" DefaultValue="0" Name="CatIDLow" PropertyName="Text" />
            <asp:ControlParameter ControlID="Label3" DefaultValue="1899" Name="CatIDHigh" PropertyName="Text" />
</SelectParameters>

CODE  BEHIND

public partial class TopandBottomSelect : System.Web.UI.Page
{
    int CG_IDlower;
    int CG_IDupper;
   
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (RadioButtonList1.SelectedIndex == 0)
        {
            CG_IDlower = 0;
            CG_IDupper = 1900;
            Label1.Text = Convert.ToString(CG_IDlower);
            Label2.Text = Convert.ToString(CG_IDupper);
        }
        else
        {
            CG_IDlower = 1899;
            CG_IDupper = 3000;
            Label1.Text = Convert.ToString(CG_IDlower);
            Label2.Text = Convert.ToString(CG_IDupper);
        }
        GridView1.DataBind();
    }
}

 

Thank you