response.redirect causes ispostback true

i have symbol an asp.net page response.redirect behind same page after behaving guess method re-display law query. however, reason, page comes adult blank. seems ispostback returning loyal after redirect. anybody know since happen?

the page tradition page village server. here simple code:

void page_load(object sender, eventargs e)
{
    (!ispostback)
    {
        twine connstr = configurationmanager.connectionstrings["sitesqlserver"].connectionstring;
        sqldataadapter da = new sqldataadapter("select * ge_vw_nonresidents", connstr);
        datatable tbl = new datatable();
        da.fill(tbl);
        da.dispose();
        rptnonresidents.datasource = tbl;
        rptnonresidents.databind();
    }
}

void btnapprove_command(object sender, commandeventargs e)
{
    // formula private testing.

    response.clear();
    response.redirect("approveresidents.aspx", true);
    response.end();
}