新手求注释，要详细，本人初学者

新手求注释，要详细，本人菜鸟
RT 各位高手速度哈急~~~~~~

C# code

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Data.SqlClient;namespace jinxiaocun{    public partial class frmWindows_login : Form    {        int nCount = 0;        public static string strLogin = "";        public static string strPwd = "";         public static int nXuanzhong = 0;        string strSQL;        public static int nsystem;        public static int ncustormer;        public static int nsupplie;        public static int nstockmanage;        public static int nsellmanage;        public static int nreservemanage;        public frmWindows_login()        {            InitializeComponent();        }        private void frmWindows_login_Load(object sender, EventArgs e)        {        }        private void btnDenglu_Click(object sender, EventArgs e)        {            strLogin = txtLogin.Text;//获取用户名的文本信息            strPwd = txtPwd.Text;            //用户名和密码不能为空            if (strLogin == "" || strPwd == "") //||表示或者            {                MessageBox.Show("用户名和密码不能为空");                return;//程序不再往后执行            }            if (strLogin.IndexOf("'") &gt;= 0)            {                MessageBox.Show("密码中不能含有'");                return;            }                        if (rdbgly.Checked == true) {                 string strCountsql = "select count(*) from logintable where login='" + strLogin + "'";                int nCountresult = Convert.ToInt32(ConglyClass.returnStringSql(strCountsql));                if (nCountresult != 1){MessageBox.Show("你不是管理员/员工，无法登录！"); return;}                nXuanzhong=1;            }            else if (rdbkehu.Checked == true)            {                 string strCountsql = "select count(*) from custormer where Clogin='" + strLogin + "'";                 int nCountresult = Convert.ToInt32(ConglyClass.returnStringSql(strCountsql));                 if (nCountresult != 1){MessageBox.Show("你不是客户，无法登录！"); return;}                 nXuanzhong=2;            }            else { MessageBox.Show("请选择身份，再登录！"); return;}            if(nXuanzhong==1){            strSQL = "select password from logintable where login='" + strLogin + "'";            }else{            strSQL = "select CPassword from custormer where CLogin='" + strLogin + "'";            }            string strPwd2 = ConglyClass.returnStringSql(strSQL);            if (strPwd == strPwd2)//判断密码是对的            {                this.Hide();               if (nXuanzhong == 1) {                   string strsqlcount = "select COUNT(*) from limits_authority where [login]='" + strLogin + "'";                   if (Convert.ToInt32(ConglyClass.returnStringSql(strsqlcount)) == 1)                   {                       string strsql = "SELECT system,custormer,supplie,stockmanage,sellmanage,reservemanage FROM limits_authority where [login]='"+strLogin+"'";                       SqlDataReader sdrread = ConglyClass.getSqlDataReader(strsql);                       sdrread.Read();                       nsystem = Convert.ToInt32(sdrread["system"]);                       ncustormer = Convert.ToInt32(sdrread["custormer"]);                       nsupplie=Convert.ToInt32(sdrread["supplie"]);                       nstockmanage=Convert.ToInt32(sdrread["stockmanage"]);                       nsellmanage=Convert.ToInt32(sdrread["sellmanage"]);                       nreservemanage=Convert.ToInt32(sdrread["reservemanage"]);                   }                   else {                       nsystem = 0;                       ncustormer = 0;                       nsupplie = 0;                       nstockmanage = 0;                       nsellmanage = 0;                       nreservemanage = 0;                   }                   frmSystem_interface frm = new frmSystem_interface();                   frm.ShowDialog();               }                            if (frmChange_Password.nUpdate == 2) { this.Show(); txtPwd.Text = ""; frmChange_Password.nUpdate = 1; }  else { this.Close(); }             }            else            {                //增加第一个功能：错误超过三次，则系统关闭，提示使用变量nCount                nCount++;//值自动加1                MessageBox.Show("密码输入错误！", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Warning);                if (nCount &gt;= 3) this.Close();            }             }        private void btnRegister_Click(object sender, EventArgs e)        {            frmWindows_register frm2 = new frmWindows_register();            frm2.ShowDialog();            if (frmWindows_register.nRegister_status == 1) {             txtLogin.Text = frmWindows_register.strLogin;            txtPwd.Text = "";}        }        private void rdbkehu_CheckedChanged(object sender, EventArgs e)        {        }        private void rdbgly_CheckedChanged(object sender, EventArgs e)        {        }    }}//员工基本信息维护和客户资料管理

[解决办法]
友情接分上面都注释得很多了
[解决办法]
貌似没有什么好解释的
[解决办法]

C# code

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Data.SqlClient;namespace jinxiaocun{    public partial class frmWindows_login : Form    {        int nCount = 0;        public static string strLogin = "";//存储用户登录名        public static string strPwd = ""; //存储用户密码        public static int nXuanzhong = 0;//选中标记        string strSQL;        public static int nsystem;        public static int ncustormer;        public static int nsupplie;        public static int nstockmanage;        public static int nsellmanage;        public static int nreservemanage;        public frmWindows_login()        {            InitializeComponent();        }        private void frmWindows_login_Load(object sender, EventArgs e)        {        }        private void btnDenglu_Click(object sender, EventArgs e)//登录按钮        {            strLogin = txtLogin.Text;//获取用户名的文本信息            strPwd = txtPwd.Text;            //用户名和密码不能为空            if (strLogin == "" || strPwd == "") //||表示或者            {                MessageBox.Show("用户名和密码不能为空");                return;//程序不再往后执行            }            if (strLogin.IndexOf("'") &gt;= 0)//strLogin用户名中是否存在逗号，存在直接return            {                MessageBox.Show("密码中不能含有'");                return;            }            //选中Checkbox，管理员登陆的。估计是指定管理员用户类型的            if (rdbgly.Checked == true) {                 string strCountsql = "select count(*) from logintable where login='" + strLogin + "'";//定义sql语句，数据库中查找存在用户名和密码的数据条数                int nCountresult = Convert.ToInt32(ConglyClass.returnStringSql(strCountsql));//返回数据库查找结果，条数赋给nCountresult                 if (nCountresult != 1){MessageBox.Show("你不是管理员/员工，无法登录！"); return;}                nXuanzhong=1;//管理员登陆标记设置为1            }            else if (rdbkehu.Checked == true)//选择客户登陆，指定客户类型的            {                 string strCountsql = "select count(*) from custormer where Clogin='" + strLogin + "'";                 int nCountresult = Convert.ToInt32(ConglyClass.returnStringSql(strCountsql));                 if (nCountresult != 1){MessageBox.Show("你不是客户，无法登录！"); return;}                 nXuanzhong=2;//客户登陆标记设置为2            }            else { MessageBox.Show("请选择身份，再登录！"); return;}            if(nXuanzhong==1){            strSQL = "select password from logintable where login='" + strLogin + "'";//查询密码            }else{            strSQL = "select CPassword from custormer where CLogin='" + strLogin + "'";            }            string strPwd2 = ConglyClass.returnStringSql(strSQL);            if (strPwd == strPwd2)//判断密码是对的            {                this.Hide();//隐藏窗体，估计是登陆窗体吧               if (nXuanzhong == 1) {                   string strsqlcount = "select COUNT(*) from limits_authority where [login]='" + strLogin + "'";                   if (Convert.ToInt32(ConglyClass.returnStringSql(strsqlcount)) == 1)//如果从数据库找到一条数据                   {                       string strsql = "SELECT system,custormer,supplie,stockmanage,sellmanage,reservemanage FROM limits_authority where [login]='"+strLogin+"'";                       SqlDataReader sdrread = ConglyClass.getSqlDataReader(strsql);                       sdrread.Read();//读取数据，分别付给下面变量                       nsystem = Convert.ToInt32(sdrread["system"]);                       ncustormer = Convert.ToInt32(sdrread["custormer"]);                       nsupplie=Convert.ToInt32(sdrread["supplie"]);                       nstockmanage=Convert.ToInt32(sdrread["stockmanage"]);                       nsellmanage=Convert.ToInt32(sdrread["sellmanage"]);                       nreservemanage=Convert.ToInt32(sdrread["reservemanage"]);                   }                   else {//没找到设置默认值，都设置为0                       nsystem = 0;                       ncustormer = 0;                       nsupplie = 0;                       nstockmanage = 0;                       nsellmanage = 0;                       nreservemanage = 0;                   }                   frmSystem_interface frm = new frmSystem_interface();//显示frmSystem_interface窗体                   frm.ShowDialog();               }                            if (frmChange_Password.nUpdate == 2) { this.Show(); txtPwd.Text = ""; frmChange_Password.nUpdate = 1; }  else { this.Close(); }             }            else            {                //增加第一个功能：错误超过三次，则系统关闭，提示使用变量nCount                nCount++;//值自动加1                MessageBox.Show("密码输入错误！", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Warning);                if (nCount &gt;= 3) this.Close();            }             }       //注册按钮事件        private void btnRegister_Click(object sender, EventArgs e)        {            frmWindows_register frm2 = new frmWindows_register();            frm2.ShowDialog();            if (frmWindows_register.nRegister_status == 1) {             txtLogin.Text = frmWindows_register.strLogin;            txtPwd.Text = "";}        }        private void rdbkehu_CheckedChanged(object sender, EventArgs e)        {        }        private void rdbgly_CheckedChanged(object sender, EventArgs e)        {        }    }}//员工基本信息维护和客户资料管理 
 
[解决办法]
C# codeusing System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.Data.SqlClient;namespace jinxiaocun{    public partial class frmWindows_login : Form    {        int nCount = 0;        public static string strLogin = "";        public static string strPwd = "";         public static int nXuanzhong = 0;        string strSQL;        public static int nsystem;        public static int ncustormer;        public static int nsupplie;        public static int nstockmanage;        public static int nsellmanage;        public static int nreservemanage;        //------------这上面全是变量的声明        public frmWindows_login()        {            InitializeComponent();        }        private void frmWindows_login_Load(object sender, EventArgs e)        {        }        private void btnDenglu_Click(object sender, EventArgs e)          {            strLogin = txtLogin.Text;//获取用户名的文本信息            strPwd = txtPwd.Text;    //密码框的信息            //用户名和密码不能为空            if (strLogin == "" || strPwd == "") //||表示或者            {                MessageBox.Show("用户名和密码不能为空");                return;//程序不再往后执行            }            if (strLogin.IndexOf("'") &gt;= 0)            {                MessageBox.Show("密码中不能含有'");                return;            }                        if (rdbgly.Checked == true) {                 string strCountsql = "select count(*) from logintable where login='" + strLogin + "'";                int nCountresult = Convert.ToInt32(ConglyClass.returnStringSql(strCountsql));                if (nCountresult != 1){MessageBox.Show("你不是管理员/员工，无法登录！"); return;}                                 nXuanzhong=1;                                                //如查XX选中，通过用声明到数据库里查一下，如果有，nXuanzhong变量赋1，否则return            }            else if (rdbkehu.Checked == true)            {                 string strCountsql = "select count(*) from custormer where Clogin='" + strLogin + "'";                 int nCountresult = Convert.ToInt32(ConglyClass.returnStringSql(strCountsql));                 if (nCountresult != 1){MessageBox.Show("你不是客户，无法登录！"); return;}                 nXuanzhong=2;                //这是和上面一个意思            }            else { MessageBox.Show("请选择身份，再登录！"); return;}            if(nXuanzhong==1){            strSQL = "select password from logintable where login='" + strLogin + "'";            }else{            strSQL = "select CPassword from custormer where CLogin='" + strLogin + "'";            }            string strPwd2 = ConglyClass.returnStringSql(strSQL);            //上面是通过用户名查密码            if (strPwd == strPwd2)//判断密码是对的            {                this.Hide();               if (nXuanzhong == 1) {                   string strsqlcount = "select COUNT(*) from limits_authority where [login]='" + strLogin + "'";                   if (Convert.ToInt32(ConglyClass.returnStringSql(strsqlcount)) == 1)                   {                       string strsql = "SELECT system,custormer,supplie,stockmanage,sellmanage,reservemanage FROM limits_authority where [login]='"+strLogin+"'";                       SqlDataReader sdrread = ConglyClass.getSqlDataReader(strsql);                       sdrread.Read();                       nsystem = Convert.ToInt32(sdrread["system"]);                       ncustormer = Convert.ToInt32(sdrread["custormer"]);                       nsupplie=Convert.ToInt32(sdrread["supplie"]);                       nstockmanage=Convert.ToInt32(sdrread["stockmanage"]);                       nsellmanage=Convert.ToInt32(sdrread["sellmanage"]);                       nreservemanage=Convert.ToInt32(sdrread["reservemanage"]);                       //                   }                   else {                       nsystem = 0;                       ncustormer = 0;                       nsupplie = 0;                       nstockmanage = 0;                       nsellmanage = 0;                       nreservemanage = 0;                   }                   frmSystem_interface frm = new frmSystem_interface();                   frm.ShowDialog();               }                            if (frmChange_Password.nUpdate == 2) { this.Show(); txtPwd.Text = ""; frmChange_Password.nUpdate = 1; }  else { this.Close(); }             }            else            {                //增加第一个功能：错误超过三次，则系统关闭，提示使用变量nCount                nCount++;//值自动加1                MessageBox.Show("密码输入错误！", "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Warning);                if (nCount &gt;= 3) this.Close();            }             }        private void btnRegister_Click(object sender, EventArgs e)        {            frmWindows_register frm2 = new frmWindows_register();            frm2.ShowDialog();            if (frmWindows_register.nRegister_status == 1) {             txtLogin.Text = frmWindows_register.strLogin;            txtPwd.Text = "";}        }        private void rdbkehu_CheckedChanged(object sender, EventArgs e)        {        }        private void rdbgly_CheckedChanged(object sender, EventArgs e)        {        }    }}//员工基本信息维护和客户资料管理 
 
[解决办法]
 if (strPwd == strPwd2)//判断密码是对的
           {
               this.Hide();//隐藏窗体，估计是登陆窗体吧
              if (nXuanzhong == 1) {
                  string strsqlcount = "select COUNT(*) from limits_authority where [login]='" + strLogin + "'";
                  if (Convert.ToInt32(ConglyClass.returnStringSql(strsqlcount)) == 1)//如果从数据库找到一条数据
                  {
                      string strsql = "SELECT system,custormer,supplie,stockmanage,sellmanage,reservemanage FROM limits_authority where [login]='"+strLogin+"'";
                      SqlDataReader sdrread = ConglyClass.getSqlDataReader(strsql);
                      sdrread.Read();//读取数据，分别付给下面变量
                      nsystem = Convert.ToInt32(sdrread["system"]);
                      ncustormer = Convert.ToInt32(sdrread["custormer"]);
                      nsupplie=Convert.ToInt32(sdrread["supplie"]);
                      nstockmanage=Convert.ToInt32(sdrread["stockmanage"]);
                      nsellmanage=Convert.ToInt32(sdrread["sellmanage"]);
                      nreservemanage=Convert.ToInt32(sdrread["reservemanage"]);
                  }
                  else {//没找到设置默认值，都设置为0
                      nsystem = 0;
                      ncustormer = 0;
                      nsupplie = 0;
                      nstockmanage = 0;
                      nsellmanage = 0;
                      nreservemanage = 0;
                  }
                  frmSystem_interface frm = new frmSystem_interface();//显示frmSystem_interface窗体
                   frm.ShowDialog();
              }
不知道frmSystem_interface是不是

新手求注释要详细本人初学者

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