private void _btnRemoveBindings_Click(object sender, EventArgs e)
{
FormHelper.ValidateIsNotEmpty(_txtRemoveUser.Text, "user");
SendRequest(() =>
{
var request = CreateRegisterRequest(_txtRemoveUser.Text);
request.Contacts.Add(SipContactHeader.CreateWildCard());
request.Expires = HeaderFactory.CreateExpiresHeader(0);
return(request);
});
}