private void btn_ReqServerDoRemove_Click(object sender, EventArgs e)
{
var authToken = string.Format("{0}#{1}", txt_ReqSerTenant.Text, txt_ReqSerCompany.Text);
txt_Result.Text = RestClient.DoRemove(txt_ReqSerRequestUrl.Text, authToken);
pb_ReqSer.Visible = true;
timer.Start();
}