求帮忙，哪位大神可以帮忙解释一下下面这段代码吗？不是很理解

Question

public void PingLun() {//评论
int Id = int.Parse(Request["Id"]);
string Neirong = Request["Neirong"];
int Uid = int.Parse( Common.UICookie.ReadCookie("Id"));

var umodel = Common.SqlExption.GetList<Model.YongHu>().FirstOrDefault(c=>c.Id.Equals(Uid));
var uname = umodel.NiCheng!=null?umodel.NiCheng:"";
var wmodel=Common.SqlExption.GetList<Model.MeiShi>().FirstOrDefault(c => c.Id.Equals(Id));
Model.PingLun pmodel = new Model.PingLun()
{
MeiShiId = Id,
MeiShiName = wmodel.MingChen,
NeiRong = Neirong,
ShiJiang = DateTime.Now.ToString("yyyy-MM-dd"),
YongHuId = Uid,
YongHuMing = uname,
YongHuTouXiang = umodel.TouXiang
};

Common.SqlExption.Add<Model.PingLun>(pmodel);
Response.Write(Common.JsonHelper.ObjectToJson<string>("1", System.Text.ASCIIEncoding.UTF8));
}

public void LoadPingLun() {
int Id = int.Parse(Request["Id"]);
var list = Common.SqlExption.GetList<Model.PingLun>().Where(c=>c.MeiShiId.Equals(Id)).OrderByDescending(c=>c.ShiJiang).ToList();
Response.Write(Common.JsonHelper.ObjectToJson<List<Model.PingLun>>(list, System.Text.ASCIIEncoding.UTF8));
}

在以上代码中的int Id = int.Parse(Request["Id"]); string Neirong = Request["Ne"];

Answer 1

如果接收到的ID不为空，就将接收到的参数ID的值先转换为字符串，然后转换为整型，然后作为结果初始化变量id