页面中的传参介质(ViewState,Session,Items),Dictionary的用法.

1例.
private List<int> QuotationIds            //List<int>可以是List<string>,bool,class(类),int,string...
    {
        get
        {
            object o = ViewState["QuotationIds"];    //ViewState可以是Session,Items.
            if (o == null)
            {
                o = new List<int>();
                ViewState.Add("QuotationIds", o);
            }
            return (List<int>)o;
        }
        set
        {
            ViewState["QuotationIds"] = value;
        }
    }

2例.
private string PartWhere
    {
        get
        {
            object o = ViewState["PartWhere"];
            if (o == null)
                o = string.Empty;

            return (string)o;
        }
        set
        {
            ViewState["PartWhere"] = value;
        }
    }

3例.
private int[] QuotationIDs
    {
        get
        {
            return (int[])Items["QuotationIDs"];
        }
        set
        {
            Items["QuotationIDs"] = value;
        }
    }
4.protected Bid CurrentBid            //Bid是一个类
    {
        get
        {
            return (Bid)Session["CurrentBid"];
        }
        set
        {
            Session["CurrentBid"] = value;
        }
    }

5.protected Dictionary<string, string> ToolNames   //<string,string>这里的类型可以自己设定,可以为<int,int>,也可以为<int,string>
    {
        get
        {
            object o = ViewState["ToolNames"];
            if (o == null)
            {
                o = new Dictionary<string, string>();
                ViewState.Add("ToolNames", o);
            }
            return (Dictionary<string, string>)o;
        }
    }