c#如何读取config文件

<span style="font-size:24px;">  </span><span style="font-size:14px;">private void NormalForm_Load(object sender, EventArgs e)  
        {  
            string WorkUnitName = ConfigurationManager.AppSettings["WorkUnitName"].ToString().Trim(); //工位使用  
            string ProcedureName = ConfigurationManager.AppSettings["ProcedureName"].ToString().Trim();//工序  
            WorkUnitNO = ConfigurationManager.AppSettings["WorkUnitNO"].ToString().Trim(); //工位编码  
            ProcedureNO = ConfigurationManager.AppSettings["ProcedureNO"].ToString().Trim();//工序编码  
            tosslabOperater.Text ="    操作员："+ OperaterName;  
            tosslabStationNo.Text = "    当前工作单元: " + WorkUnitName;  
            tosslabCurrentProcedure.Text = "    当前工序: " + ProcedureName;  
            mShowChart();    //初次加载工位统计数目  
            mShowConfig(); //判断是否显示配置按钮  
        }</span>