private void button1_Click(object sender, EventArgs e)
{
var channel = new Channel("localhost", 5001, ChannelCredentials.Insecure);
var client = new User.UserClient(channel);
var user = client.Login(new LoginModel()
{
UserName = "", Password = "", Domain = ""
});
if (user != null)
{
UserInfo.User = user;
}
}