执行代码时必须输入0，当单击按钮时，应该写入1作为响应 [英] When the code is executed 0 must be entered and when button was clicked it should written 1 in response

问题描述

{
public partial class WebForm1 : System.Web.UI.Page
        {
            int ClicksCount = 0;

            protected void Page_Load(object sender,EventArgs e)
            {
                if(!IsPostBack)
                {
                    TextBox1.Text ="0";
                }
            }
        protected void Button1_Click(object sender, EventArgs e)
        {
            ClicksCount = ClicksCount + 1;
            TextBox1.Text = ClicksCount.ToString();
        }
        }
}

我尝试了什么：



代码应该在0初始化时返回1当我尝试它时仍然相同我不知道为什么

What I have tried:

code should return 1 when 0 was initialized when I tried it remains same I don't know why

推荐答案

使用 viewstate [ ^ ]或 hiddenfield [ ^ ]维护状态 [ ^ ]

use viewstate[^] or hiddenfield [^] to maintain the state [^]

public partial class WebForm1 : System.Web.UI.Page
    { 
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                TextBox1.Text = "0";
                ViewState["key"] = 0;
            }
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            ViewState["key"] = Convert.ToInt32( ViewState["key"]) + 1;
            TextBox1.Text = ViewState["key"].ToString();
        }
    }

首先，确保您的代码在您认为应该执行时执行。使用调试器并在战略位置放置断点。



当你不明白你的代码在做什么或为什么它做它的作用时，答案是 debugger 。

使用调试器查看代码正在执行的操作。只需设置断点并查看代码执行情况，调试器允许您逐行执行第1行并在执行时检查变量，这是一个令人难以置信的学习工具。



调试器 - 维基百科，免费的百科全书 [ ^ ]

掌握Visual Studio 2010中的调试 - 初学者指南 [ ^ ]



调试器在这里显示你的代码正在做什么，你的任务是与它应该做什么进行比较。

调试器中没有魔法，它没有发现错误，它只是帮助你。当代码没有达到预期的效果时，你就会接近一个错误。

First thing, make sure your code is executed when you think it should. Use the debugger and put breakpoints at strategic places.

When you don't understand what your code is doing or why it does what it does, the answer is debugger.
Use the debugger to see what your code is doing. Just set a breakpoint and see your code performing, the debugger allow you to execute lines 1 by 1 and to inspect variables as it execute, it is an incredible learning tool.

Debugger - Wikipedia, the free encyclopedia[^]
Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]

The debugger is here to show you what your code is doing and your task is to compare with what it should do.
There is no magic in the debugger, it don't find bugs, it just help you to. When the code don't do what is expected, you are close to a bug.

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