How i can use the connectionString of the current website for log4Net instead of configuring [duplicate]

Answer 1

You can update ConnectionString of AdoNetAppender dynamically, after you have configured log4net for your website, usually in the Global.asax. After your call to configure the log4net using XmlConfigutor() or something.. you can call below method which checks for all AdoNetAppenders and update the connectionString required.

private static void ConfigureLog4Net()
{
    Hierarchy hierarchy = LogManager.GetRepository() as Hierarchy;
    if(hierarchy != null && hierarchy.Configured)
    {
        foreach(IAppender appender in hierarchy.GetAppenders())
        {
           if(appender is AdoNetAppender)
           {
               var adoNetAppender = (AdoNetAppender)appender;
               adoNetAppender.ConnectionString = ConfigurationManager.AppSettings["YOURCONNECTIONSTRINGKEY"].ToString();
               adoNetAppender.ActivateOptions(); //Refresh AdoNetAppenders Settings
           }
        }
    }
}