ASP.NET星期如何显示成中文?

Question

protected void Page_Load(object sender, EventArgs e){this.labdate.Text = System.DateTime.Now.ToString("yyyy年MM月dd日") + " " + System.DateTime.Now.DayOfWeek.ToString();}我写了这样一句代码，星期显示为sunday怎么让sunday显示成星期天？也就是把英文显示成中文