C# 通过配置文件获取数据库连接

C# 读取保存App.config配置文件的完整源码参考(转) http://smartsoft.5d6d.com/thread-6550-1-1.html C# 读取保存App.config配置文件的完整源码参考 最近出差在北京做一个小项目，项目里需要读取配置文件的小功能，觉得挺有参考意义的就把代码发上来给大家参考一下。我们选择了直接用微软的读取配置文件的方法。 这个是程序的运行设计效果，就是把这些参数可以进行灵活设置，灵活保存设置状态。 程序编译后自动会产生相应的配置文件，是跟项目的名称一样的配置文件。 读取配置文件及保存配置的具体代码参考如下，希望能给你节省一些时间，直接复制粘贴这个代码就可以用了： //------------------------------------------------------------ // All Rights Reserved , Copyright (C) 2010 , CDPF , Ltd. //------------------------------------------------------------ using System; using System.Config uration; using System.Windows.Forms; using Utilities; namespace DirectSeeding { /// /// FrmConfig /// 读取配置文件 /// /// 修改纪录 /// /// 2011.01.14 版本： 1.0 JiRiGaLa 完善程序的注释等、从新整理代码。 /// /// 版本：1.0 /// /// /// JiRiGaLa /// 2011.01.14 /// /// public partial class FrmConfig : Form { public FrmConfig() { InitializeComponent(); } /// /// 读取配置文件 /// private void GetConfig() { this.txtWriteFileName.Text = ConfigurationManager.AppSettings["WriteFileName"]; this.txtWritePath.Text = ConfigurationManager.AppSettings["WritePath"].Replace("|", Environment.NewLine); this.txtPostMessageURL.Text = ConfigurationManager.AppSettings["PostMessageURL"]; this.txtLeasedLineURL.Text = ConfigurationManager.AppSettings["LeasedLineURL"]; } private void FrmDirectSeeding_Load(object sender, EventArgs e) { this.GetConfig(); } /// /// 保存配置文件 /// private void SaveConfig() { // 写入参数设置 Configuration configuration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); configuration.AppSettings.Settings["WriteFileName"].Value = this.txtWriteFileName.Text; configuration.AppSettings.Settings["WritePath"].Value = this.txtWritePath.Text.Trim().Replace(Environment.NewLine, "|"); configuration.AppSettings.Settings["PostMessageURL"].Value = this.txtPostMessageURL.Text; configuration.AppSettings.Settings["LeasedLineURL"].Value = this.txtLeasedLineURL.Text; configuration.Save(); // 重新读取参数 ConfigurationManager.RefreshSection("appSettings"); WriteFile.WriteFileName = ConfigurationManager.AppSettings["WriteFileName"]; WriteFile.WritePath = ConfigurationManager.AppSettings["WritePath"].Split('|'); PostMessage.PostMessageURL = ConfigurationManager.AppSettings["PostMessageURL"]; // PostMessage.LeasedLineURL = ConfigurationManager.AppSettings["LeasedLineURL"]; } private void btnSavaConfig_Click(object sender, EventArgs e) { // 保存设置 SaveConfig(); } } } uration; using System.Windows.Forms; using Utilities; namespace DirectSeeding { /// /// FrmConfig /// 读取配置文件 /// /// 修改纪录 /// /// 2011.01.14 版本： 1.0 JiRiGaLa 完善程序的注释等、从新整理代码。 /// /// 版本：1.0 /// /// /// JiRiGaLa /// 2011.01.14 /// /// public partial class FrmConfig : Form { public FrmConfig() { InitializeComponent(); } /// /// 读取配置文件 /// private void GetConfig() { this.txtWriteFileName.Text = ConfigurationManager.AppSettings["WriteFileName"]; this.txtWritePath.Text = ConfigurationManager.AppSettings["WritePath"].Replace("|", Environment.NewLine); this.txtPostMessageURL.Text = ConfigurationManager.AppSettings["PostMessageURL"]; this.txtLeasedLineURL.Text = ConfigurationManager.AppSettings["LeasedLineURL"]; } private void FrmDirectSeeding_Load(object sender, EventArgs e) { this.GetConfig(); } /// /// 保存配置文件 /// private void SaveConfig() { // 写入参数设置 Configuration configuration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); configuration.AppSettings.Settings["WriteFileName"].Value = this.txtWriteFileName.Text; configuration.AppSettings.Settings["WritePath"].Value = this.txtWritePath.Text.Trim().Replace(Environment.NewLine, "|"); configuration.AppSettings.Settings["PostMessageURL"].Value = this.txtPostMessageURL.Text; configuration.AppSettings.Settings["LeasedLineURL"].Value = this.txtLeasedLineURL.Text; configuration.Save(); // 重新读取参数 ConfigurationManager.RefreshSection("appSettings"); WriteFile.WriteFileName = ConfigurationManager.AppSettings["WriteFileName"]; WriteFile.WritePath = ConfigurationManager.AppSettings["WritePath"].Split('|'); PostMessage.PostMessageURL = ConfigurationManager.AppSettings["PostMessageURL"]; // PostMessage.LeasedLineURL = ConfigurationManager.AppSettings["LeasedLineURL"]; } private void btnSavaConfig_Click(object sender, EventArgs e) { // 保存设置 SaveConfig(); } } }