SQL Populated Drop-Down Problem with Response.Redirect

[dudis3]

Hello All,
I hope someone can help me:

I have SQL Populated Drop-Down.
Also I have a button wich activates a Response.Redirect:
----------------------

private void Button1_Click(object sender, System.EventArgs e)
{
string c = "";
c = SearchList.SelectedItem.Text;
Response.Redirect("DynamicPage.aspx?Site=4A_new&We bKey=5ead07fd-
c15d-4efd-9ac8-36e0d28ee9c3&cmt_name=" + SearchList.SelectedValue);
TextBox1.Text = c;
}
----------------------
The problem is that when I select any value in the drop-down and press
submit it will always be the FIRST Value of the List, even if I select
other values it will pass only first one

Could Someone suggest anything on this?
Thank you