public bool Update(string Account, string Password, string newPassword)
{
try
{
using (var db = new UserContext())
{
var PasswordMD5 = MD5Creating.EncryptWithMD5(Password);
var b = db.Users.Count(a => a.Account.Equals(Account) && a.Password.Equals(PasswordMD5));
if (b != 0) //查账号和原密码
{
var c = db.Users.Where(a => a.Account.Equals(Account));
PasswordMD5 = MD5Creating.EncryptWithMD5(newPassword);
c.FirstOrDefault().Password = PasswordMD5;
db.SaveChanges();
return(true);
}
else
{
return(false);
}
}
}
catch (Exception e)
{
throw e;
}
}
public bool Insert(string Account, string Password, string Nickname)
{
try
{
using (var db = new UserContext())
{
if (db.Users.Count(a => a.Account.Equals(Account)) == 0) //判断账号是否存在
{
var PasswordMD5 = MD5Creating.EncryptWithMD5(Password);
db.Users.AddRange(new List <User>()
{
new User()
{
Account = Account, Password = PasswordMD5, Nickname = Nickname
}
});
db.SaveChanges();
return(true);
}
else
{
return(false);
}
}
}
catch (Exception ex)
{
throw ex;
}
}
public User Access(string Account, string Password)
{
try
{
using (var db = new UserContext())
{
var PasswordMD5 = MD5Creating.EncryptWithMD5(Password);
var b = db.Users.Where(a => a.Account.Equals(Account) && a.Password.Equals(PasswordMD5)).FirstOrDefault(); //选对应昵称
return(b);
}
}
catch (Exception ex)
{
throw ex;
}
}
internal static void Main()
{
try
{
using (var db = new UserContext())
{
var b = db.Users.Count(a => a.Account.Equals("admin")); //检查是否有管理员账户
if (b == 0)
{
var AdminMD5 = MD5Creating.EncryptWithMD5("admin");
db.Users.AddRange(new List <User>()
{
new User()
{
Account = "admin", Password = AdminMD5, Nickname = "admin"
}
}); //添加管理员账户
db.SaveChanges();
}
}
}
catch (IOException ex)
{
MessageBox.Show("发生严重错误:" + ex);
Application.Exit();
}
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
LoginForm login = new LoginForm();
//界面转换
login.ShowDialog();
if (login.DialogResult == DialogResult.OK)
{
string Acc = login.Acc;
login.Dispose();
login.Close();
MainForm m = new MainForm(Acc);
Application.Run(m);
}
}