Question

我有第3号申请,在会议上反对将我所需要的所有价值作为执行储存程序参数。

如果用户行动得到更新,则执行所储存的程序。

public ActionResult Index(string userAction) 
{ 
   if(Session["Mappings"] != null)            
        ViewData["Message"] = "Mapping web grid"; 

    if (Session["PricingSecurities"] == null) 
        Session["PricingSecurities"] = objRepository.GetPricingSecurityID(); 
    if (Session["Cusips"] == null) 
        Session["Cusips"] = objRepository.GetCUSIP(); 

    SecurityMappingModel objModel = null; 
    mappings = (List<SecurityMappingModel>)Session["Mappings"]; 

    objModel = new SecurityMappingModel(); 


    if (userAction == "Update" ) 
    { 
        //help me to fix this code 

        //foreach (var item in Session)
        //{Session["Mappings"] //NEED FIX HERE
        //}
        // PLEASE HELP ME TO RETRIEVE SESSION VALUES
        return RedirectToAction("Index"); 
    } 
    return View(objModel); 
}

HOW CAN I RETRIEVE ALLVALUES OF Session [“Mappings”] it is held 3entries 3ids,3cusips,3calculation

Answer 1

简短的回答是不要将<代码>var<>/code>作为你的列举类型,而是使用<代码>object。

foreach (obj item in Session) {
    if (item is CUSIP) {
        // CUSIP processing
    } else if (item is PricingSecurity) {
        //Pricing security processing
    } //etc.
}

如你所知,这种做法的问题是,为了对其采取任何习俗行动,你必须检验每一物体的类型。更好的想法是创建你自己的班子,以储存在本届会议上:

public class SessionData()
{
    List<CUSIP> Cusips {get;set;}
    List<PricingSecurity> PricingSecurities {get;set;}

    public SessionData()
    {
        // Initialize the lists so they are never null
        this.Cusips = new List<CUSIP>();
        this.PricingSecurities = new List<PricingSecurity>();
    }
}

然后,你只能穿透每个清单的特性,并采取任何必要的行动。

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