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 }