CREATE PROCEDURE [dbo].Users_SelectOneByUserName
 

@Name nvarchar(200)

AS


SELECT
        ID,Name,PassWord
        
FROM
        [dbo].[Users]
        
WHERE
        [Name] = @Name

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <Button
        android:id="@+id/ConnectButton"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="连接服务器" />
    <TextView
        android:id="@+id/tvUseName"
        android:layout_width="195px"
        android:layout_height="35px"
        android:text="用户名：" />
    <EditText
        android:id="@+id/etUserName"
        android:layout_width="195px"
        android:layout_height="wrap_content"
        android:text=""
        android:textSize="18sp" />
    <TextView
        android:id="@+id/tvPassWord"
        android:layout_width="195px"
        android:layout_height="35px"
        android:text="密码：" />
    <EditText
        android:id="@+id/etPassWord"
        android:layout_width="195px"
        android:layout_height="wrap_content"
        android:text=""
        android:textSize="18sp" />
    <Button
        android:id="@+id/MyButton"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="登陆" />
    <ScrollView
        android:id="@+id/mainTextScroll"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight=".1"
        android:layout_above="@+id/messageTextInput">
        <TextView
            android:id="@+id/mainText"
            android:textAppearance="?android:attr/textAppearanceSmall"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="bottom"
            android:inputType="none" />
    </ScrollView>
</LinearLayout>

using System;
using Android.App;
using Android.Content;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;
using NetworkCommsDotNet;
using DPSBase;
using System.Net;
using Mobile.Entity;

namespace Mobile.Client
{
    [Activity(Label = "Mobile.Client", MainLauncher = true, Icon = "@drawable/icon")]
    public class MainActivity : Activity
    {
        int count = 1;

        //连接信息对象
        public ConnectionInfo connInfo = null;

        //连接对象
        Connection newTcpConnection;
        //连接服务器
        Button connButton;

        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);

            // Set our view from the "main" layout resource
            SetContentView(Resource.Layout.Main);

            //映射登陆按钮
            Button button = FindViewById<Button>(Resource.Id.MyButton);
            //登陆按钮相关的方法
            button.Click += loginButton_Click;

            //映射连接服务器按钮
            connButton = FindViewById<Button>(Resource.Id.ConnectButton);
            //连接服务器按钮相关方法
            connButton.Click += connButton_Click;

            //TextView 显示信息
            tvShowMessage = FindViewById<TextView>(Resource.Id.mainText);

            //映射输入用户名控件
            etUserName = FindViewById<EditText>(Resource.Id.etUserName);
            //映射输入密码控件 
            etPassWord = FindViewById<EditText>(Resource.Id.etPassWord);

            if (NetConnected())
            {
                AppendMessage("网络状态：可用");
            }
            else
            {
                AppendMessage("无网络，请先设置网络");
 
            }

        }

        //连接服务器相关方法
        void connButton_Click(object sender, EventArgs e)
        {
            //给连接信息对象赋值
            connInfo = new ConnectionInfo(ServerIP, ServerPort);

            //如果不成功，会弹出异常信息
            newTcpConnection = TCPConnection.GetConnection(connInfo);

            connButton.Text = "连接成功";
            connButton.Enabled = false;
        }
        string ServerIP = "115.28.141.108";
        int ServerPort = 3003;
        //客户端登陆相关方法
        void loginButton_Click(object sender, EventArgs e)
        {
            Users theUser = new Users();
            theUser.Name = etUserName.Text;
            theUser.PassWord = etPassWord.Text;

            ResMessage resMessage = newTcpConnection.SendReceiveObject<ResMessage>("UserLogin", "ResLogin", 5000, theUser);

            if (resMessage.Message == "登陆成功")
                AppendMessage("登陆成功");
            else
                //显示错误信息
                AppendMessage(resMessage.Message);
        }
    

        //用于显示信息的TextView
        TextView tvShowMessage;
        //用户名
        EditText etUserName;
        //密码
        EditText etPassWord;

        /// <summary>
        /// 数据序列化器
        /// </summary>
        public DataSerializer Serializer { get; set; }


        //显示信息
        public void AppendMessage(string message)
        {
            tvShowMessage.Text += System.Environment.NewLine + message;

        }
         
       
        //判断当前网络是否可用
        private bool NetConnected()
        {
            var cm = Context.ConnectivityService;
            var cmMgr = (Android.Net.ConnectivityManager)GetSystemService(cm);


            if (cmMgr.GetNetworkInfo(Android.Net.ConnectivityType.Mobile).IsConnected || cmMgr.GetNetworkInfo(Android.Net.ConnectivityType.Wifi).IsConnected)
            {
                return true;

            }
            else
            {
                return false;
            }

        }
    }
}