| C#读取和设置连接字符串方法总结 |
| //第一种获取连接字符串的方法 Properties.Settings connset = Properties.Settings.Default; constr = connset.ConnectionString; //第二种获取连接字符串的方法 ConnectionStringSettings settings = ConfigurationManager.ConnectionStrings[\”ConnectionString\”]; string str = settings.ConnectionString; //第三种获取连接字符串的方法 XmlDocument doc = new XmlDocument(); doc.Load(\”..//..//App.config\”); XmlNode root = doc.SelectSingleNode(\”configuration\”); XmlNode node = root.SelectSingleNode(\”connectionStrings/add[@name=’ConnectionString’]\”); XmlElement el = node as XmlElement; string str = el.GetAttribute(\”connectionString\”); //在程序中设置连接字符串 connset.ConnectionString = \”Data Source=orcl;Persist Security Info=True;User ID=xhfoc;Password=foc;Unicode=True\”; connset.Save(); 使用这种方法要修改Properties命名空间下的Settings.settings.cs文件,添加下面的代码: [global::System.Configuration.ApplicationScopedSettingAttribute()] [global::System.Diagnostics.DebuggerNonUserCodeAttribute()] [global::System.Configuration.SpecialSettingAttribute(global::System.Configuration.SpecialSetting.ConnectionString)] [global::System.Configuration.DefaultSettingValueAttribute(\”Data Source=orcl;Persist Security Info=True;User ID=xhfoc;Password=foc;Unicode=True\”)] public string ConnectionString { get { return ((string)(this[\”ConnectionString\”])); } set { this[\”ConnectionString\”] = value; } } //修改配置文件的方法 XmlDocument doc = new XmlDocument(); doc.Load(\”..//..//App.config\”); XmlNode root = doc.SelectSingleNode(\”configuration\”); XmlNode node = root.SelectSingleNode(\”connectionStrings/add[@name=’ConnectionString’]\”); XmlElement el = node as XmlElement; el.SetAttribute(\”connectionString\”, \”Data Source=orcl;Persist Security Info=True;User ID=xhfoc;Password=foc;Unicode=True\”); [Page] doc.Save(\”..//..//App.config\”); |
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