在viewstate中访问变量的语法 [英] Syntax to access variables in viewstate

问题描述

我想在回发之间保留一个变量，所以我编写了一个访问器以将其置于viewstate中.以下哪一种是访问它的最佳方式?还是有更好的选择?

I want to retain a variable between postbacks, so I write an accessor to put it into viewstate. Which one of these is the best way to access it? Or is there a better option?

选项1:

private int Status
{
    get
    {
        try
        {
            return (int)ViewState[@"__Status"];
        }
        catch
        {
            return 0;
        }
    }
    set
    {
        ViewState[@"__Status"] = value;
    }
}

选项2:

private int Status
{
    get
    {
        if (ViewState[@"__Status"] is int)
        {
            return (int)ViewState[@"__Status"];
        }
        else
        {
            return 0;
        }
    }
    set
    {
        ViewState[@"__Status"] = value;
    }
}

谢谢

我正在使用C#2.0

I'm using C# 2.0

推荐答案

这是我倾向于这样做的方式:

Here's the way that I tend to do it:

private int Status
{
  get { return (ViewState["MYSTATUS"] != null) ? (int)ViewState["MYSTATUS"] : 0; }
  set { ViewState["MYSTATUS"] = value; }
}

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