让LinqToSQL使用Web.Config中的链接字符串(修改Settings.Designer.cs)

namespace BizService.Inc.Properties {
    
    
    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "10.0.0.0")]
    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
        
        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
        
        public static Settings Default {
            get {
                return defaultInstance;
            }
        }
        
        [global::System.Configuration.ApplicationScopedSettingAttribute()]
        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
        [global::System.Configuration.SpecialSettingAttribute(global::System.Configuration.SpecialSetting.ConnectionString)]
        [global::System.Configuration.DefaultSettingValueAttribute("Data Source=localhost;Initial Catalog=BizPlatform;Persist Security Info=True;User ID=sa")]
        public string BizPlatformConnectionString {
            get {
　　　　//下面几行
        var connstr="BizService.Inc.Properties.Settings.BizPlatformConnectionString";
        return System.Configuration.ConfigurationManager.ConnectionStrings[connstr].ConnectionString ?? 
            ((string)(this["BizPlatformConnectionString"]));
            }
        }
    }

}