public class TemplateModel
 {
  public string touser { get; set; }
  public string template_id { get; set; }
  public string url { get; set; }

  public string topcolor { get; set; }

  public TemplateData data { get; set; } 
 
  public TemplateModel(string hello,string state,string reason,string last)
  {
   data=new TemplateData()
   {
    first = new TempItem(hello),
    keyword1 = new TempItem(state),
    keyword2 = new TempItem(reason),
    remark = new TempItem(last)
   };
    
  }
 }

 public class TemplateData
 {
  public TempItem first { get; set; }
  public TempItem keyword1 { get; set; }
  public TempItem keyword2 { get; set; }
  public TempItem remark { get; set; }
 }
 public class TempItem
 {
  public TempItem(string v,string c = "#173177")
  {
   value = v;
   color = c;
  }
  public string value { get; set; }
  public string color { get; set; }
 }

 public class OpenApiResult
 {
  public int error_code { get; set; }
  public string error_msg { get; set; }

  public string msg_id { get; set; }
 }

using SendHelp= Senparc.Weixin.CommonAPIs.CommonJsonSend;

public OpenApiResult SendTemplateMessage(string token,TemplateModel model)
  {
   var url = string.Format("https://api.weixin.qq.com/cgi-bin/message/template/send?access_token={0}", token);
   try
   {
    var res = SendHelp.Send<OpenApiResult>(token, url, model);
    return res;
   }
   catch (Exception e)
   {
    
    return new OpenApiResult(){error_code = -1,error_msg = e.Message};
   }
   
  }

public ActionResult SendMessage()
  {
   var token = getToken();
   var toUserId = "oBSBmwQjqwjfzQlKsFNjxFLSiIQM";
   var data = new TemplateModel("你好，stoneniqiu","审核通过","资料完整","祝你生活幸福！");
   data.touser = toUserId;
   data.template_id = "gXmkeL7Kc-KUy2EQzKqjPKY-kzFyatTztiYFKCaUPO4";
   data.url = "http://www.xxx.com/xx/xx";
   data.topcolor = "#FF0000";
   var res=wxDeviceService.SendTemplateMessage(token, data);
   return View(res);
  }