private void Form1_Load(object sender, EventArgs e)
{
localIP = new IPUtil().GetIpAddress();
cbbLevel.SelectedIndex = getLevel(localIP);
var reg_username = regUtil.ReadLastUserName();
if (!String.IsNullOrEmpty(reg_username))
{
tbName.Text = reg_username;
}
else
{
tbName.Text = Environment.UserName;
}
tsslIP.Text = $"本机IP地址:{localIP}";
}