我如何在与每个按钮点击一次返回一个项目？ [英] How do I return one item at a time with each button click?

问题描述

我有我宣布我上面的表格载数组：

I have an array that I declare above my form load:

protected string[] Colors = new string [3] {"red", "green", "orange"};

当我点击这个我提出我想使用的Response.Write（）; 来打印出红色对于第一次点击，绿色我第二次单击它，然后最后橙色我最后一次单击它。我读<一个href=\"http://stackoverflow.com/questions/25625272/how-do-i-get-next-item-in-array-with-each-button-click\">How我会得到下一个项目在每个按钮阵列点击？以及该用户正在尝试非常相似，我试图做一些事情，但它看起来好像在这种情况下该数组是动态的。

When I click this my submit I want to use a Response.Write(); to print out red for the first click, green the second time I click it, then finally orange the last time I click it. I was reading How do I get next item in array with each button click? and this user is trying to something very similar to what I am trying to do, however it looks as though the array in that case is dynamic.

推荐答案

在会话跟踪它

 protected void Page_Load(object sender, EventArgs e)
    {           
        int? count = Session["count"] as int?;
        count = (count == null) ? 0 : count;
        Response.Write(Colors[count.Value]);
        count = (count + 1) % Colors.Length;
        Session["count"] = count;
    }

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