winform登录窗体实现记住密码

winform登录窗体实现记住密码功能作者：东圳 来源：博客园 发布时间：2010-08-06 16:15 阅读：232 次 原文链接 [收藏]
先定义user类：-

using System;-

using System.Collections.Generic;-

using System.Text;-

-

[Serializable]-

public class User-

{-

private string loginID = string.Empty;-

public string LoginID-

{-

get { return loginID; }-

set { loginID = value; }-

}-

private string pwd = string.Empty;-

public string Pwd-

{-

get { return pwd; }-

set { pwd = value; }-

}-

}-

-

页面开始位置定义：-

Dictionary users = new Dictionary();-

User user = new User();-

注：会员输入框用combox下拉框-

在登录成功事件写：-

FileStream fs = new FileStream("data.bin", FileMode.Create);-

BinaryFormatter bf = new BinaryFormatter();-

user.LoginID = cbologinId.Text.Trim();-

if (cbRember.Checked)-

{-

user.Pwd = txt_userPwd.Text.Trim();-

}-

else-

{-

user.Pwd = "";-

}-

if (users.ContainsKey(user.LoginID))-

{-

users.Remove(user.LoginID);-

}-

users.Add(user.LoginID, user);-

bf.Serialize(fs, users);-

fs.Close();-

-

页面加载的时候：-

FileStream fs = new FileStream("data.bin", FileMode.OpenOrCreate);-

if (fs.Length > 0)-

{-

BinaryFormatter bf = new BinaryFormatter();-

users = bf.Deserialize(fs) as Dictionary;-

foreach (User user in users.Values)-

{-

cbologinId.Items.Add(user.LoginID);-

}-

for (int i = 0; i < users.Count; i++)-

{-

if (cbologinId.Text.Trim() != "")-

{-

if (users.ContainsKey(cbologinId.Text.Trim()))-

{-

txt_userPwd.Text = users[cbologinId.Text].Pwd;-

cbRember.Checked = true;-

}-

}-

}-

}-

fs.Close();-

combox用户列表选择事件：-

FileStream fs = new FileStream("data.bin", FileMode.OpenOrCreate);-

if (fs.Length > 0)-

{-

BinaryFormatter bf = new BinaryFormatter();-

users = bf.Deserialize(fs) as Dictionary;-

for (int i = 0; i < users.Count; i++)-

{-

if (cbologinId.Text.Trim() != "")-

{-

if (users.ContainsKey(cbologinId.Text.Trim()) && users[cbologinId.Text].Pwd != "")-

{-

txt_userPwd.Text = users[cbologinId.Text].Pwd;-

cbRember.Checked = true;-

}-

else-

{-

txt_userPwd.Text = "";-

cbRember.Checked = false;-

}-

}-

}-

}-

fs.Close();