目录

一、配置数据库文件和程序代码二、配置C#窗体控件布局和源代码1、窗体Form1：账号登录界面2、窗体Form2：账号注册界面3、窗体Form3：主界面4、窗体Form4：修改密码界面5、窗体Form5：账号注销界面6、窗体Form6：实名认证界面总结

这是本人用C#窗体做的一个登录程序，如标题所示，它包含了账号登录、注册账号、修改密码、注销账号和实名认证五个功能。对于有一定基础知识的小伙伴来说，应该不算太难，里面有注释说明，可能咋一看感觉代码运行的逻辑有点乱，不过没关系，相信对你会有所帮助。以下是详细的操作过程。

一、配置数据库文件和程序代码

1、由于这个登录程序连接了SQL Server数据库，所以需要配置一下相关数据，创建一个“账号登录”数据库，新建一个“登录注册表”和“实名信息表”，并记住这个服务器名称，等下会用到，如下图所示。

登录注册表设置两个列名：username(账号)和password(密码)以及对应的数据类型(可自定义)。

实名信息表要设置3个列名，分别是：username(账号)、Name(姓名)、IDcard(身份证号)。设置username列名是为了关联这两张表。

SQL查询显示结果，password和userpwd(即username+password)均显示为密文；如果账号未实名，则Name和IDcard两栏没有数据。

2、然后打开VS，新建一个窗体程序(我新建的窗体是CT12)，在里面设置一下App.config的SQL数据库连接信息，如下图所示。

App.config里面的代码格式：

<?xml version="1.0" encoding="utf-8" ?><configuration><startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8" /></startup><connectionStrings><add name="sqlserver" connectionString="server=SQLEXPRESS;database=账号登录;integrated security = true;"/>//这是以windows身份验证登录连接，SQLEXPRESS是服务器名称，“账号登录”是新建的数据库名称.</connectionStrings></configuration>

二、配置C#窗体控件布局和源代码

该登录程序包含了6个窗体，分别为：Form1——登录界面、Form2——注册界面、Form3——主界面、Form4——修改密码界面、Form5——账号注销界面、Form6——实名认证界面。

注意：由于连接了SQL数据库，这5个窗体之间数据相互传递、相互关联，如果只截取一段窗体代码运行，则会直接报错。

1、窗体Form1：账号登录界面

label1——账号，label2——密码，

textBox1——对应账号输入，textBox2——对应密码输入，

button1——登录，button2——重置，

button3——退出，button4——注册。

checkBox1——是否显示密码

窗体Form1的控件布局：

窗体Form1源代码

using System;using System.Configuration;using System.Data.SqlClient;using System.Windows.Forms;using System.Drawing;using ponentModel;using System.Security.Cryptography;using System.Text;using System.Diagnostics;namespace CT12{public partial class Form1 : Form{public Form1(){InitializeComponent();this.Text = "账号登录";ScreenSize();textBox2.PasswordChar = '*';//密码显示为"*"}public void ScreenSize() //设置窗体样式和居中显示{int x = Screen.GetBounds(this).Width;int y = Screen.GetBounds(this).Height;this.MinimumSize = new Size(x / 2, y / 2);this.MaximumSize = new Size(x / 2, y / 2);this.CenterToParent();this.CenterToScreen();}private void Form1_Load(object sender, EventArgs e){ScreenSize(); //调用函数this.ActiveControl = textBox1; //焦点在控件textBox1上面}private void Button4_Click(object sender, EventArgs e) //跳转注册界面{this.Hide();Form2 sd = new Form2();sd.Show();}private void Button3_Click(object sender, EventArgs e) //退出程序{Process.GetCurrentProcess().Kill();}private void Button2_Click(object sender, EventArgs e)//重置登录信息{textBox1.Text = "";textBox2.Text = "";this.ActiveControl = textBox1;}public string MD5Encrypt(string rawPass, string salt)//MD5加盐加密{MD5 md5 = MD5.Create();byte[] bs = Encoding.UTF8.GetBytes(rawPass + salt);byte[] ts = puteHash(bs);StringBuilder std = new StringBuilder();foreach (byte i in ts){std.Append(i.ToString("x2"));}return std.ToString(); //返回密文}readonly string Stu = ConfigurationManager.ConnectionStrings["sqlserver"].ConnectionString;//创建数据库连接public static string username; //设置Form1的一个参数，登录成功后将显示在主界面Form3public static string password;private void Button1_Click(object sender, EventArgs e) //登录代码{SqlConnection conn = new SqlConnection(Stu); //创建数据库游标对象connconn.Open(); //打开数据库SqlCommand cmd = conn.CreateCommand();mandText = "select * from 登录注册表 where username='" + textBox1.Text.Trim() + "'";SqlDataReader sdt = cmd.ExecuteReader();if (textBox1.Text == ""){MessageBox.Show("账号不得为空!", "提示");this.ActiveControl = textBox1;}else if (textBox2.Text == ""){MessageBox.Show("密码不得为空!", "提示");this.ActiveControl = textBox2;}else if (sdt.Read() == true) //读取到记录{string result = sdt.GetString(sdt.GetOrdinal("password"));if (MD5Encrypt(textBox2.Text.Trim(), textBox1.Text.Trim()) == result){MessageBox.Show("登录成功!", "提示");username = textBox1.Text.Trim(); //将textBox1的值赋给参数usernamepassword = textBox2.Text.Trim(); //将textBox2的值赋给参数passwordconn.Close(); //关闭数据库连接this.Hide(); //隐藏当前窗口Form3 sd = new Form3();sd.Show(); //显示主界面Form3}else{MessageBox.Show("账号密码错误!", "提示");textBox2.Text = "";this.ActiveControl = textBox2;}}else{DialogResult dr = MessageBox.Show("账号不存在，是否选择注册一个新账号？", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information);if (dr == DialogResult.OK){this.Hide();Form2 er = new Form2();er.Show();conn.Close();}else{textBox1.Text = "";textBox2.Text = "";this.ActiveControl = textBox1;}}conn.Close(); //关闭游标对象连接}private void CheckBox1_CheckedChanged(object sender, EventArgs e) //是否显示密码输入为“*”{if (checkBox1.Checked){textBox2.PasswordChar = '\0';}else{textBox2.PasswordChar = '*';}}protected override void OnClosing(CancelEventArgs e){Process.GetCurrentProcess().Kill();}private void Form1_FormClosing(object sender, FormClosingEventArgs e){Process.GetCurrentProcess().Kill();}}}

窗体Form1运行效果截图

2、窗体Form2：账号注册界面

label1——新用户名，label2——用户密码，label3——确认密码

textBox1(对应新用户名)，textBox2(对应用户密码)，textBox3(对应确认密码)

button1——确认，button2——重置，button3——返回

窗体Form2的控件布局

窗体Form2源代码

using System;using ponentModel;using System.Configuration;using System.Data;using System.Data.SqlClient;using System.Diagnostics;using System.Drawing;using System.Security.Cryptography;using System.Text;using System.Windows.Forms;namespace CT12{public partial class Form2 : Form{public Form2(){InitializeComponent();this.Text = "账号注册";ScreenSize();}private void Form2_Load(object sender, EventArgs e){ScreenSize();textBox2.PasswordChar = '*'; //textBox2——用户密码显示为"*"textBox3.PasswordChar = '*'; //textBox3——确认密码显示为"*"this.ActiveControl = textBox1; //焦点在输入框textBox1上}public void ScreenSize() //设置窗体大小尺寸和居中显示{int x = Screen.GetBounds(this).Width; //获取屏幕宽度int y = Screen.GetBounds(this).Height;//获取屏幕高度this.MinimumSize = new Size(x / 2, y / 2);//设置窗口最小尺寸this.MaximumSize = new Size(x / 2, y / 2);//设置窗口最大尺寸this.CenterToParent();this.CenterToScreen();}private void Button2_Click(object sender, EventArgs e) //重置输入框信息{textBox1.Text = "";textBox2.Text = "";textBox3.Text = "";this.ActiveControl = textBox1;}private void Button3_Click(object sender, EventArgs e) //返回登录界面Form1{this.Hide();Form1 sd = new Form1();sd.Show();}public string MD5Encrypt(string rawPass, string salt) //MD5加盐加密操作{MD5 md5 = MD5.Create();byte[] bs = Encoding.UTF8.GetBytes(rawPass + salt);byte[] hs = puteHash(bs);StringBuilder stb = new StringBuilder();foreach (byte b in hs){stb.Append(b.ToString("x2"));}return stb.ToString();}readonly string Stu = ConfigurationManager.ConnectionStrings["sqlserver"].ConnectionString;private void Button1_Click(object sender, EventArgs e){//创建数据库对象连接SqlConnection conn = new SqlConnection(Stu);conn.Open();string sql = "Select username from 登录注册表 where username='" + textBox1.Text.Trim() + "'";SqlCommand cmd = new SqlCommand(sql, conn);//判断账号是否已存在mandType = CommandType.Text;SqlDataReader sdt = cmd.ExecuteReader();if (textBox1.Text == ""){MessageBox.Show("注册账号不得为空!", "提示");}else if (textBox2.Text == ""){MessageBox.Show("注册账号密码不得为空!", "提示");}else if (textBox3.Text == "" || textBox2.Text != textBox3.Text){MessageBox.Show("请重新确认密码", "提示");textBox2.Text = "";textBox3.Text = "";}/*else if(textBox1.Text.Length<8){MessageBox.Show("请输入8位以上的新用户名!", "提示");textBox1.Text = "";}else if (Regex.IsMatch(textBox2.Text.ToString(), @"^\w+_$") == false){MessageBox.Show("请输入8~16位由字母、数字和下划线组成的密码!");textBox2.Text = "";textBox3.Text = "";}else if(textBox2.Text.Length<8||textBox2.Text.Length>16){MessageBox.Show("请输入8~16位由字母、数字和下划线组成的密码!");textBox2.Text = "";textBox3.Text = "";}*/else{if (sdt.Read()){MessageBox.Show("该账号已注册,请重新输入新账号!", "提示");textBox1.Text = "";}else{//插入的信息分别为账号，密文，账号+密文Insert(textBox1.Text.Trim(), MD5Encrypt(textBox2.Text.Trim(), textBox1.Text.Trim()));//调用函数Insert()保存注册信息到数据库conn.Close();this.Hide();Form1 df = new Form1();df.Show();}}conn.Close();}public void Insert(string txt1, string txt2) //数据库插入注册成功后的账号信息{SqlConnection conn = new SqlConnection(Stu);conn.Open();try{string InsertStr = string.Format("insert into 登录注册表 values('{0}','{1}')", txt1, txt2);SqlCommand comm = conn.CreateCommand();mandText = InsertStr;SqlCommand mycom = new SqlCommand(InsertStr, conn);mycom.ExecuteNonQuery();MessageBox.Show("账号注册成功!", "提示");conn.Close();}catch (Exception ex){MessageBox.Show(ex.Message);conn.Close();}conn.Close();}private void CheckBox1_CheckedChanged(object sender, EventArgs e) //textBox2文本框输入显示为"*"{if (checkBox1.Checked)textBox2.PasswordChar = '\0';elsetextBox2.PasswordChar = '*';}private void CheckBox2_CheckedChanged(object sender, EventArgs e) //textBox3文本框输入为"*"{if (checkBox2.Checked)textBox3.PasswordChar = '\0';elsetextBox3.PasswordChar = '*';}protected override void OnClosing(CancelEventArgs e){Process.GetCurrentProcess().Kill();}private void Form2_FormClosing(object sender, FormClosingEventArgs e){Process.GetCurrentProcess().Kill();}}}

窗体Form2运行效果截图

3、窗体Form3：主界面

checkBox1——当前账号，Label1——显示账号

textBox1——显示姓名，textBox2——显示身份证号

Button1——修改密码，Button2——注销账号，Button5——实名认证，

Button3——返回，Button4——退出

窗体Form3的控件布局

窗体Form3的源代码

using System;using ponentModel;using System.Configuration;using System.Data.SqlClient;using System.Diagnostics;using System.Drawing;using System.Windows.Forms;namespace CT12{public partial class Form3 : Form{public Form3(){InitializeComponent();this.Text = "账号信息";ScreenSize();}public void ScreenSize(){int x = Screen.GetBounds(this).Width;int y = Screen.GetBounds(this).Height;this.MinimumSize = new Size(x / 2, y / 2);this.MaximumSize = new Size(x / 2, y / 2);this.CenterToParent();this.CenterToScreen();}private void Form3_Load(object sender, EventArgs e){ScreenSize();ShowUser(Form1.username);this.HideDcard(Form1.username);ShowName();}public void ShowName(){SqlConnection conn = new SqlConnection(Stu);conn.Open();SqlCommand cmd = conn.CreateCommand();mandText = "select Name,IDcard from 实名信息表 where username='" + Form1.username + "'";SqlDataReader reader = cmd.ExecuteReader();if (reader.Read() == true){this.textBox2.Text = reader.GetString(reader.GetOrdinal("Name"));//实名认证成功后，主界面Form3默认显示姓名}else{this.textBox2.Text = "";}conn.Close();}private void Button1_Click(object sender, EventArgs e) //跳转窗体Form4:修改密码界面{this.Hide();Form4 df = new Form4();df.Show();}private void Button2_Click(object sender, EventArgs e) //跳转窗体Form5:注销账号界面{this.Hide();Form5 sd = new Form5();sd.Show();}private void Button4_Click(object sender, EventArgs e) //强制退出所有窗口程序和线程{Process.GetCurrentProcess().Kill();}private void Button3_Click(object sender, EventArgs e) //返回窗体Form1:登录界面{DialogResult dr = MessageBox.Show("是否返回登录界面？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Information);if (dr == DialogResult.Yes){this.Hide();Form1 sdd = new Form1();sdd.Show();}}private void Button5_Click_1(object sender, EventArgs e){this.Hide();Form6 asd = new Form6();asd.Show();}public void ShowUser(string text){char StarChar = '*';string value = text;int startlen = 1, endlen = 1;int lenth = value.Length - startlen - endlen;string str1 = value.Substring(startlen, lenth);string str2 = string.Empty;for (int i = 0; i < str1.Length; i++){str2 += StarChar;}label1.Text = value.Replace(str1, str2);}readonly string Stu = ConfigurationManager.ConnectionStrings["sqlserver"].ConnectionString;private void CheckBox1_CheckedChanged(object sender, EventArgs e) //是否显示账号{if (checkBox1.Checked){label1.Text = Form1.username;}else{ShowUser(Form1.username); //调用方法显示*号}}private void CheckBox2_CheckedChanged(object sender, EventArgs e) //是否显示身份证号{SqlConnection con = new SqlConnection(Stu);con.Open();SqlCommand cmd = con.CreateCommand();mandText = "select Name,IDcard from 实名信息表 where username='" + Form1.username + "'";SqlDataReader reader = cmd.ExecuteReader();if (reader.Read() == true){if (checkBox2.Checked){textBox2.Text = reader.GetString(reader.GetOrdinal("Name"));ShowIDcard(Form1.username); //调用方法函数，显示完整身份证号}else{HideDcard(Form1.username); //显示加密后的身份证号}}con.Close();}public void ShowIDcard(string text) //显示完整的实名信息{SqlConnection conn = new SqlConnection(Stu);conn.Open();SqlCommand cmd = conn.CreateCommand();mandText = "select Name,IDcard from 实名信息表 where username='" + text + "'";SqlDataReader reader = cmd.ExecuteReader();if (reader.Read() == true){textBox3.Text = reader.GetString(reader.GetOrdinal("IDcard"));}conn.Close();}public void HideDcard(string text) //用'*'号加密身份证号{SqlConnection conn = new SqlConnection(Stu);conn.Open();SqlCommand cmd = conn.CreateCommand();mandText = "select Name,IDcard from 实名信息表 where username='" + text + "'";SqlDataReader reader = cmd.ExecuteReader();if (reader.Read() == true){string sdd = "*";string IDcard = reader.GetString(reader.GetOrdinal("IDcard"));for (int i = 0; i < IDcard.Length - 3; i++){sdd += "*";}textBox3.Text = IDcard.Substring(0, 1) + sdd + IDcard.Substring(IDcard.Length - 2, 2);}else{textBox3.Text = "";}conn.Close();}private void Form3_FormClosing(object sender, FormClosingEventArgs e){Process.GetCurrentProcess().Kill();}protected override void OnClosing(CancelEventArgs e){Process.GetCurrentProcess().Kill();}}}

窗体Form3界面效果截图

4、窗体Form4：修改密码界面

label2——旧密码，label3——新密码

textBox2(对应旧密码)，textBox3(对应新密码)

Button1——确认，Button2——重置，Button3——取消

窗体Form4的控件布局

窗体Form4的源代码

using System;using System.Configuration;using System.Data.SqlClient;using System.Diagnostics;using System.Drawing;using System.Security.Cryptography;using System.Text;using System.Windows.Forms;namespace CT12{public partial class Form4 : Form{public Form4(){InitializeComponent();this.Text = "修改密码";ScreenSize();}public void ScreenSize(){int x = Screen.GetBounds(this).Width;int y = Screen.GetBounds(this).Height;this.MinimumSize = new Size(x / 2, y / 2);this.MaximumSize = new Size(x / 2, y / 2);this.CenterToParent();this.CenterToScreen();}private void Form4_Load(object sender, EventArgs e){ScreenSize();textBox2.PasswordChar = '*';textBox3.PasswordChar = '*';this.ActiveControl = textBox2;}private void Button3_Click(object sender, EventArgs e) //返回窗体Form3:主界面{this.Hide();Form3 df = new Form3();df.Show();}private void Button2_Click(object sender, EventArgs e) //重置textBox文本框的输入信息{this.ActiveControl = textBox2;textBox2.Text = "";textBox3.Text = "";}public string MD5Encrypt(string rawPass, string salt)//MD5加盐加密{MD5 md5 = MD5.Create();byte[] bs = Encoding.UTF8.GetBytes(rawPass + salt);byte[] ts = puteHash(bs);StringBuilder std = new StringBuilder();foreach (byte i in ts){std.Append(i.ToString("x2"));}return std.ToString(); //返回密文}readonly string Stu = ConfigurationManager.ConnectionStrings["sqlserver"].ConnectionString; //创建数据库连接private void Button1_Click(object sender, EventArgs e){SqlConnection conn = new SqlConnection(Stu);conn.Open();string sql = "Select * from 登录注册表 where username='" + Form1.username.Trim() + "'";SqlCommand cmd = new SqlCommand(sql, conn);//调用登录窗体Form1参数username，判断当前账号密码是否正确SqlDataReader reader = cmd.ExecuteReader();if (textBox2.Text == ""){MessageBox.Show("账号密码不得为空!", "提示");this.ActiveControl = textBox2;}else if (textBox3.Text == ""){MessageBox.Show("请输入新密码!", "提示");this.ActiveControl = textBox3;} else if (reader.Read()){string result = reader.GetString(reader.GetOrdinal("password"));if (MD5Encrypt(textBox2.Text.Trim(), Form1.username) == result){Change(Form1.username, MD5Encrypt(textBox3.Text, Form1.username));//调用Change()函数方法保存修改后的账号信息到数据库this.Hide();Form1 sd = new Form1();sd.Show();conn.Close();}else{MessageBox.Show("账号密码错误!", "提示");textBox2.Text = "";textBox3.Text = "";this.ActiveControl = textBox2;}}else{MessageBox.Show("账号密码错误!", "提示");textBox2.Text = "";textBox3.Text = "";this.ActiveControl = textBox2;}conn.Close();}public void Change(string txt1, string txt2)//数据库保存修改后的账号信息{//txt1为当前账号，txt2为加密后的密文，txt3为当前账号+密文SqlConnection conn = new SqlConnection(Stu);conn.Open();try{string InsertStr = string.Format("update 登录注册表 set password='{0}' WHERE username='{1}';", txt2.ToString(), txt1.ToString());SqlCommand comm = conn.CreateCommand();SqlCommand mycom = new SqlCommand(InsertStr, conn);mycom.ExecuteNonQuery();conn.Close();MessageBox.Show("账号密码修改成功!", "提示");}catch (Exception ex){MessageBox.Show(ex.Message);textBox2.Text = "";textBox3.Text = "";}}private void CheckBox1_CheckedChanged(object sender, EventArgs e) //textBox2文本框输入是否显示为"*"{if (checkBox1.Checked){textBox2.PasswordChar = '\0';}else{textBox2.PasswordChar = '*';}}private void CheckBox2_CheckedChanged(object sender, EventArgs e) // //textBox3文本框输入是否显示为"*"{if (checkBox1.Checked){textBox3.PasswordChar = '\0';}else{textBox3.PasswordChar = '*';}}private void Form4_FormClosing(object sender, FormClosingEventArgs e){Process.GetCurrentProcess().Kill();}}}

窗体Form4运行效果截图

5、窗体Form5：账号注销界面

label2——账号密码，textBox2——对应当前账号密码，

button1——注销，button2——重置，button3——取消

窗体Form5的控件布局

窗体Form5的源代码

using System;using System.Configuration;using System.Data;using System.Data.SqlClient;using System.Diagnostics;using System.Drawing;using System.Security.Cryptography;using System.Text;using System.Windows.Forms;namespace CT12{public partial class Form5 : Form{public Form5(){InitializeComponent();this.Text = "账号注销";ScreenSize();}public void ScreenSize(){int x = Screen.GetBounds(this).Width;int y = Screen.GetBounds(this).Height;this.MinimumSize = new Size(x / 2, y / 2);this.MaximumSize = new Size(x / 2, y / 2);this.CenterToParent();this.CenterToScreen();}private void Form5_Load(object sender, EventArgs e){ScreenSize();this.ActiveControl = textBox2;}private void Button3_Click(object sender, EventArgs e) //返回窗体Form3：主界面{this.Hide();Form3 sd = new Form3();sd.Show();}private void Button2_Click(object sender, EventArgs e) //重置textBox文本框的信息{textBox2.Text = "";this.ActiveControl = textBox2;}public string MD5Encrypt(string rawPass, string salt)//MD5加盐加密{MD5 md5 = MD5.Create();byte[] bs = Encoding.UTF8.GetBytes(rawPass + salt);byte[] ts = puteHash(bs);StringBuilder std = new StringBuilder();foreach (byte i in ts){std.Append(i.ToString("x2"));}return std.ToString(); //返回密文}readonly string Stu = ConfigurationManager.ConnectionStrings["sqlserver"].ConnectionString;private void Button1_Click(object sender, EventArgs e) //账号注销功能{SqlConnection conn = new SqlConnection(Stu);conn.Open();string sql = "Select * from 登录注册表 where username='" + Form1.username + "'";SqlCommand cmd = new SqlCommand(sql, conn);//判断当前账号密码是否正确mandType = CommandType.Text;SqlDataReader reader = cmd.ExecuteReader();if (textBox2.Text == ""){MessageBox.Show("账号密码不得为空!", "提示");}else if (reader.Read() == true){string result = reader.GetString(reader.GetOrdinal("password"));if (MD5Encrypt(textBox2.Text.Trim(), Form1.username) == result){MessageBox.Show("账号注销成功!", "提示");Delete(); //调用方法，删除注销后的账号信息conn.Close(); //关闭数据库对象连接this.Hide();Form1 sd = new Form1();sd.Show();}else{MessageBox.Show("账号密码错误!", "提示");textBox2.Text = "";this.ActiveControl = textBox2;}}else{MessageBox.Show("账号密码错误!", "提示");textBox2.Text = "";this.ActiveControl = textBox2;}conn.Close();}public void Delete() //数据库删除注销后的账号信息{SqlConnection conn = new SqlConnection(Stu);conn.Open();try{string sql2 = "delete from 登录注册表 where username='" + Form1.username + "'";SqlCommand cmd1 = new SqlCommand(sql2, conn);cmd1.ExecuteNonQuery();conn.Close();Delete2();}catch (Exception ex){MessageBox.Show(ex.Message);}}public void Delete2()//删除注销账号的实名信息{SqlConnection conn = new SqlConnection(Stu);conn.Open();try{string sql1 = "delete from 实名信息表 where username='" + Form1.username + "'";SqlCommand cmd = new SqlCommand(sql1, conn);cmd.ExecuteNonQuery();conn.Close();}catch (Exception ex){MessageBox.Show(ex.Message);}}private void Form5_FormClosing(object sender, FormClosingEventArgs e){Process.GetCurrentProcess().Kill();}}}

6、窗体Form6：实名认证界面

label1——姓名，label2——身份证号

textBox1——对应姓名，textBox2——对应身份证号

button1——绑定，button2——重置，button3——返回

窗体Form6的控件布局

窗体Form6源代码

using System;using System.Configuration;using System.Data;using System.Data.SqlClient;using System.Diagnostics;using System.Drawing;using System.Security.Cryptography;using System.Text;using System.Windows.Forms;namespace CT12{public partial class Form6 : Form{public Form6(){InitializeComponent();this.Text = "实名认证";ScreenSize();}private void Form6_Load(object sender, EventArgs e){ScreenSize();}public void ScreenSize(){int x = Screen.GetBounds(this).Width;int y = Screen.GetBounds(this).Height;this.MinimumSize = new Size(x / 2, y / 2);this.MaximumSize = new Size(x / 2, y / 2);this.CenterToParent();this.CenterToScreen();}private void Button3_Click(object sender, EventArgs e){this.Hide();Form3 sd = new Form3();sd.Show();}private void Button2_Click(object sender, EventArgs e){textBox1.Text = "";textBox2.Text = "";}public string MD5Encrypt(string rawPass, string salt)//MD5加盐加密{MD5 md5 = MD5.Create();byte[] bs = Encoding.UTF8.GetBytes(rawPass + salt);byte[] ts = puteHash(bs);StringBuilder std = new StringBuilder();foreach (byte i in ts){std.Append(i.ToString("x2"));}return std.ToString(); //返回密文}readonly string Stu = ConfigurationManager.ConnectionStrings["sqlserver"].ConnectionString;public static string name; //创建参数name，实名认证成功后显示在主界面Form3public static string IDcard; //创建参数IDcard，实名认证成功后显示在主界面Form3private void Button1_Click(object sender, EventArgs e)//绑定操作{SqlConnection conn = new SqlConnection(Stu);conn.Open();string sql1 = "Select IDcard from 实名信息表 where IDcard='" + textBox2.Text + "'";SqlCommand cmd = new SqlCommand(sql1, conn);mandType = CommandType.Text;SqlDataReader stt;stt = cmd.ExecuteReader();if (textBox1.Text == ""){MessageBox.Show("提示", "真实姓名不得为空!");this.ActiveControl = textBox1;}else if (textBox2.Text == ""){MessageBox.Show("身份证号码不得为空!", "提示");this.ActiveControl = textBox2;}/*else if (Regex.IsMatch(textBox1.Text.ToString(), @"[\u4E00-\u9FA5]+$") == false){MessageBox.Show("请输入真实有效的姓名!", "提示");textBox1.Text = "";this.ActiveControl = textBox1;}else if (Regex.IsMatch(textBox2.Text.ToString(), @"^\d+$") == false && textBox2.Text.Length != 18){MessageBox.Show("请输入真实有效的身份证号码!", "提示");textBox2.Text = "";this.ActiveControl = textBox2;}*/else{if (stt.Read() == true)//读取到一条记录就返回{MessageBox.Show("该身份证号已绑定其他账号,请重新绑定!", "提示");textBox1.Text = "";textBox2.Text = "";}else{Verfy(); //调用函数判断当前账号是否已经实名认证conn.Close();}}conn.Close();}public void Verfy()//判断账号是否已经实名认证{SqlConnection conn = new SqlConnection(Stu);conn.Open();string sql2 = "Select Name,IDcard from 实名信息表 where username='" + Form1.username + "'";SqlCommand cmd1 = new SqlCommand(sql2, conn);mandType = CommandType.Text;SqlDataReader sdt;sdt = cmd1.ExecuteReader();if (sdt.Read() == true){MessageBox.Show("该账号已实名认证!", "提示");textBox1.Text = "";textBox2.Text = "";}else{Insert(Form1.username, textBox1.Text, textBox2.Text); //调用方法Insert()name = textBox1.Text;IDcard = textBox2.Text;conn.Close();this.Hide();Form3 sw = new Form3();sw.Show();}conn.Close();}public void Insert(string txt1, string txt2, string txt3) //保存实名后的信息到数据库{SqlConnection conn = new SqlConnection(Stu);conn.Open();try{MessageBox.Show("实名认证成功!", "提示");string InsertStr = string.Format("insert into 实名信息表 values('{0}','{1}','{2}')", txt1, txt2, txt3);SqlCommand mycom = new SqlCommand(InsertStr, conn);mycom.ExecuteNonQuery();conn.Close();}catch (Exception ex){MessageBox.Show(ex.Message);}}private void Form6_FormClosing(object sender, FormClosingEventArgs e){Process.GetCurrentProcess().Kill();}}}

Form6运行效果截图

总结

以上就是今天要跟大家分享的内容，可能代码有点多，代码逻辑看起来比较乱，花了几个星期时间写的，期间修修改改了很多次，尚且还有不足之处，仅供学习和参考；感兴趣的小伙伴可以来看看，希望对你有所帮助，也欢迎大家的批评指正。

本人声明：未经本人许可，禁止转载！！！如果要引用部分代码，请标明出处！！

C#窗体程序连接SQL Server数据库实现账号登录 账号注册 修改密码 账号注销和实名认证(不定时更新)