Winform實現登入表單記住密碼的功能

Winform實現登入表單記住密碼的功能，

  

 

代碼如下：

1、表單Form1載入：

       List<UserInfo> item=new List<UserInfo>();
        UserInfo userInfo = new UserInfo();
        BUserInfo bUserInfo = new BUserInfo();
        Dictionary<string, UserInfo> users = new Dictionary<string, UserInfo>();
        private void Form1_Load(object sender, EventArgs e)
        {
            FileStream fs = new FileStream("data.bin", FileMode.OpenOrCreate);

            if (fs.Length > 0)
            {
                BinaryFormatter bf = new BinaryFormatter();
                users = bf.Deserialize(fs) as Dictionary<string, UserInfo>;
                foreach (UserInfo user in users.Values)
                {
                    comboBox1.Items.Add(user.UserName);
                }

                for (int i = 0; i < users.Count; i++)
                {
                    if (comboBox1.Text != "")
                    {
                        if (users.ContainsKey(comboBox1.Text))
                        {
                            textBox2.Text = users[comboBox1.Text].UserPwd;
                            checkBox1.Checked = true;
                        }
                    }
                }
            }
            fs.Close();

            item = (List<UserInfo>)bUserInfo.GetAll();
            comboBox1.DataSource = item;
            comboBox1.DisplayMember = "UserName";
        }

 

2、選擇使用者名稱：
        private void comboBox1_SelectedValueChanged(object sender, EventArgs e)
        {
            FileStream fs = new FileStream("data.bin", FileMode.OpenOrCreate);

            if (fs.Length > 0)
            {
                BinaryFormatter bf = new BinaryFormatter();
                users = bf.Deserialize(fs) as Dictionary<string, UserInfo>;
                for (int i = 0; i < users.Count; i++)
                {
                    if (comboBox1.Text != "")
                    {
                        if (users.ContainsKey(comboBox1.Text) && users[comboBox1.Text].UserPwd != "")
                        {
                            textBox2.Text = users[comboBox1.Text].UserPwd;
                            checkBox1.Checked = true;
                        }
                        else
                        {
                            textBox2.Text = "";
                            checkBox1.Checked = false;
                        }
                    }
                }
            }

            fs.Close();
        }