如何在log4net中以编程方式创建SeqAppender？

using log4net;
using log4net.Appender;
using log4net.Config;
using log4net.Layout;

SeqAppender seqAppender = new SeqAppender();
seqAppender.ServerUrl = "http://your-seq-server-url"; // Seq服务器的URL
seqAppender.ApiKey = "your-api-key"; // Seq服务器的API密钥（可选）
seqAppender.Layout = new PatternLayout("%date [%thread] %-5level %logger - %message%newline"); // 设置日志格式

BasicConfigurator.Configure(seqAppender);

private static readonly ILog log = LogManager.GetLogger(typeof(YourClassName));

log.Info("This is an informational message.");
log.Error("This is an error message.");