通用权限管理系统组件 (GPM - General Permissions Manager) 中实现系统参数配置保存，附源码

   其实GPM不仅仅是权限管理系统，其实更是一个灵活的轻量级快速.Net开发架构，他需要最短的学习时间，可以最快速入门，并不是通过玩技术来实现我们的日常需求。GPM中只要写一套代码，就可以实现在多种数据库上的稳定运行。

   下面我们给大家参考一下如何在GMP中实现系统参数配置的保存功能，开发界面见下图：

数据库中的保存效果如下：

配置文件中的保存效果如下：

 

实现代码的优点就是，1套代码支持多种数据库，1个参数基本上1行代码就可以实现保存，读取功能，代码的量少稳定性高。见参考代码如下：

  1 //-----------------------------------------------------------------
  2 // All Rights Reserved , Copyright (C) 2012 , Hairihan TECH, Ltd. 
  3 //-----------------------------------------------------------------
  4 
  5 using System;
  6 using System.Data;
  7 using System.Windows.Forms;
  8 
  9 namespace DotNet.WinForm
 10 {
 11     using DotNet.Utilities;
 12     using DotNet.Business;
 13 
 14     /// <summary>
 15     /// FrmSystemSecurity
 16     /// 用户登录系统
 17     /// 
 18     /// 修改纪录
 19     /// 
 20     ///        2012.02.12 版本：1.1 JiRiGaLa 功能实现。
 21     ///        2012.01.19 版本：1.0 JiRiGaLa 整理文件。
 22     ///        
 23     /// 版本：1.0
 24     ///
 25     /// <author>
 26     ///        <name>JiRiGaLa</name>
 27     ///        <date>2012.02.12</date>
 28     /// </author> 
 29     /// </summary>
 30     public partial class FrmSystemSecurity : BaseForm
 31     {
 32         public FrmSystemSecurity()
 33         {
 34             InitializeComponent();
 35         }
 36 
 37         /// <summary>
 38         /// 从数据库读取当前配置情况
 39         /// </summary>
 40         private void GetParameter()
 41         {
 42             string parameter = string.Empty;
 43             parameter = DotNetService.Instance.ParameterService.GetParameter(this.UserInfo, "System", "SystemSecurity", "ServerEncryptPassword");
 44             if (!string.IsNullOrEmpty(parameter))
 45             {
 46                 this.chkServerEncryptPassword.Checked = parameter.Equals(true.ToString());
 47             }
 48             parameter = DotNetService.Instance.ParameterService.GetParameter(this.UserInfo, "System", "SystemSecurity", "PasswordMiniLength");
 49             if (!string.IsNullOrEmpty(parameter))
 50             {
 51                 this.nudPasswordMiniLength.Value = int.Parse(parameter);
 52             }
 53             parameter = DotNetService.Instance.ParameterService.GetParameter(this.UserInfo, "System", "SystemSecurity", "NumericCharacters");
 54             if (!string.IsNullOrEmpty(parameter))
 55             {
 56                 this.chkNumericCharacters.Checked = parameter.Equals(true.ToString());
 57             }
 58             parameter = DotNetService.Instance.ParameterService.GetParameter(this.UserInfo, "System", "SystemSecurity", "PasswordCycle");
 59             if (!string.IsNullOrEmpty(parameter))
 60             {
 61                 this.nudPasswordChangeCycle.Value = int.Parse(parameter);
 62             }
 63             parameter = DotNetService.Instance.ParameterService.GetParameter(this.UserInfo, "System", "SystemSecurity", "CheckOnLine");
 64             if (!string.IsNullOrEmpty(parameter))
 65             {
 66                 this.chkCheckOnLine.Checked = parameter.Equals(true.ToString());
 67             }
 68             parameter = DotNetService.Instance.ParameterService.GetParameter(this.UserInfo, "System", "SystemSecurity", "AccountMinimumLength");
 69             if (!string.IsNullOrEmpty(parameter))
 70             {
 71                 this.nudAccountMinimumLength.Value = int.Parse(parameter);
 72             }
 73             parameter = DotNetService.Instance.ParameterService.GetParameter(this.UserInfo, "System", "SystemSecurity", "PasswordErrowLockLimit");
 74             if (!string.IsNullOrEmpty(parameter))
 75             {
 76                 this.nudPasswordErrowLockLimit.Value = int.Parse(parameter);
 77             }
 78             parameter = DotNetService.Instance.ParameterService.GetParameter(this.UserInfo, "System", "SystemSecurity", "PasswordErrowLockCycle");
 79             if (!string.IsNullOrEmpty(parameter))
 80             {
 81                 this.nudPasswordErrowLockCycle.Value = int.Parse(parameter);
 82             }
 83         }
 84 
 85         /// <summary>
 86         /// 将设置保存到数据库
 87         /// </summary>
 88         private void SaveParameter()
 89         {
 90             DotNetService.Instance.ParameterService.SetParameter(this.UserInfo, "System", "SystemSecurity", "ServerEncryptPassword", this.chkServerEncryptPassword.Checked.ToString());
 91             DotNetService.Instance.ParameterService.SetParameter(this.UserInfo, "System", "SystemSecurity", "PasswordMiniLength", this.nudPasswordMiniLength.Value.ToString());
 92             DotNetService.Instance.ParameterService.SetParameter(this.UserInfo, "System", "SystemSecurity", "NumericCharacters", this.chkNumericCharacters.Checked.ToString());
 93             DotNetService.Instance.ParameterService.SetParameter(this.UserInfo, "System", "SystemSecurity", "PasswordCycle", this.nudPasswordChangeCycle.Value.ToString());
 94             DotNetService.Instance.ParameterService.SetParameter(this.UserInfo, "System", "SystemSecurity", "CheckOnLine", this.chkCheckOnLine.Checked.ToString());
 95             DotNetService.Instance.ParameterService.SetParameter(this.UserInfo, "System", "SystemSecurity", "AccountMinimumLength", this.nudAccountMinimumLength.Value.ToString());
 96             DotNetService.Instance.ParameterService.SetParameter(this.UserInfo, "System", "SystemSecurity", "PasswordErrowLockLimit", this.nudPasswordErrowLockLimit.Value.ToString());
 97             DotNetService.Instance.ParameterService.SetParameter(this.UserInfo, "System", "SystemSecurity", "PasswordErrowLockCycle", this.nudPasswordErrowLockCycle.Value.ToString());
 98         }
 99 
100         /// <summary>
101         /// 从当前配置文件显示到界面上
102         /// </summary>
103         private void GetConfig()
104         {
105             this.chkServerEncryptPassword.Checked = BaseSystemInfo.ServerEncryptPassword;
106             this.nudPasswordMiniLength.Value = BaseSystemInfo.PasswordMiniLength;
107             this.chkNumericCharacters.Checked = BaseSystemInfo.NumericCharacters;
108             this.nudPasswordChangeCycle.Value = BaseSystemInfo.PasswordChangeCycle;
109             this.chkCheckOnLine.Checked = BaseSystemInfo.CheckOnLine;
110             this.nudAccountMinimumLength.Value = BaseSystemInfo.AccountMinimumLength;
111             this.nudPasswordErrowLockLimit.Value = BaseSystemInfo.PasswordErrowLockLimit;
112             this.nudPasswordErrowLockCycle.Value = BaseSystemInfo.PasswordErrowLockCycle;
113         }
114 
115         /// <summary>
116         /// 当窗体加载时执行的方法，
117         /// 这个方法会自动处理鼠标的忙碌状态等等
118         /// </summary>
119         public override void FormOnLoad()
120         {
121             this.GetConfig();
122             this.GetParameter();
123         }
124 
125         /// <summary>
126         /// 将配置文件保存到XML文件里
127         /// </summary>
128         private void SaveConfig()
129         {
130             BaseSystemInfo.ServerEncryptPassword = this.chkServerEncryptPassword.Checked;
131             BaseSystemInfo.PasswordMiniLength = (int)this.nudPasswordMiniLength.Value;
132             BaseSystemInfo.NumericCharacters = this.chkNumericCharacters.Checked;
133             BaseSystemInfo.PasswordChangeCycle = (int)this.nudPasswordChangeCycle.Value;
134             BaseSystemInfo.CheckOnLine = this.chkCheckOnLine.Checked;
135             BaseSystemInfo.AccountMinimumLength =  (int)this.nudAccountMinimumLength.Value;
136             BaseSystemInfo.PasswordErrowLockLimit = (int)this.nudPasswordErrowLockLimit.Value;
137             BaseSystemInfo.PasswordErrowLockCycle = (int)this.nudPasswordErrowLockCycle.Value;
138 
139             // 保存用户的信息
140             #if (!DEBUG)
141                 UserConfigHelper.SaveConfig();
142             #endif
143         }
144 
145         /// <summary>
146         /// 保存系统设置
147         /// </summary>
148         private void SaveSystemConfig()
149         {
150             // 设置鼠标繁忙状态，并保留原先的状态
151             Cursor holdCursor = this.Cursor;
152             this.Cursor = Cursors.WaitCursor;
153             try
154             {
155                 this.SaveParameter();
156                 this.SaveConfig();
157 
158                 // 是否需要有提示信息？
159                 if (BaseSystemInfo.ShowInformation)
160                 {
161                     // 批量保存，进行提示
162                     MessageBox.Show(AppMessage.MSG0011, AppMessage.MSG0000, MessageBoxButtons.OK, MessageBoxIcon.Information);
163                 }
164             }
165             catch (Exception ex)
166             {
167                 this.ProcessException(ex);
168             }
169             finally
170             {
171                 // 设置鼠标默认状态，原来的光标状态
172                 this.Cursor = holdCursor;
173             }
174         }
175 
176         private void btnConfirm_Click(object sender, EventArgs e)
177         {
178             // 保存系统设置
179             this.SaveSystemConfig();
180         }
181 
182         private void btnCancel_Click(object sender, EventArgs e)
183         {
184             this.Close();
185         }
186     }
187 }