private void btn_exit_Click(object sender, EventArgs e)
{
if (WhatType == 1) /// Letter
{
database.SP_UpdateMessage(PublicVariable.gUserId);
}
else if (WhatType == 2)/// Reference
{
database.Sp_updateErjaMessage(PublicVariable.gUserId);
}
database.SaveChanges();
this.Close();
}