我正在.NET窗口应用程序上工作. [英] I am doing work on .NET window application.

问题描述

我的问题是使用按钮将两个数字相加的代码是什么?

我尝试过的事情:

代码在这里类
使用系统；
使用System.Collections.Generic;
使用System.Linq;
使用System.Text;
使用System.Windows.Forms;

命名空间WindowsFormsApplication4
{
类Class1
{
int a;
int b;
int sum;
public void main()
{
a = 5;
b = 6;
sum = a + b;
MessageBox.Show(总和为=" + sum.ToString());

}
}
}
我需要按钮代码，请告诉我按钮代码..?

my question is that what is the code to add two numbers using button?

What I have tried:

code is here of class
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication4
{
class Class1
{
int a;
int b;
int sum;
public void main()
{
a = 5;
b = 6;
sum= a + b;
MessageBox.Show("the sum is="+sum.ToString());

}
}
}
and i need button code please tell me button code..?

推荐答案

先阅读这些文档
Windows窗体-文本框控件 [ Windows窗体-按钮控件 [ ^ ]

Read these docs first
Windows Form - TextBox Control[^]
Windows Form - Button Control[^]

private void btnAdd_Click(object sender, EventArgs e)
      {
          /*
           * add two controls in the form and rename the 'name' property as txtA and txtB
           * add a button control and rename it to btnAdd, then double click the button, visual studio IDE wll add this event code for you
           * and you add your logic in this code block as below.
           */
          int a = Convert.ToInt32(txtA.Text.Trim()); // convert to int .. explore int.TryParse for validation
          int b = Convert.ToInt32(txtB.Text.Trim()); // convert to int .. explore int.TryParse for validation
          int sum = a + b;
          MessageBox.Show("the sum is=" + sum.ToString());

      }

没有Windows窗体类.您应该创建新的Windows窗体应用程序.您会看到一个表格. Visual Studio左侧有工具箱，请看那里.工具箱包含文本框，按钮等.您必须拖放两个文本框和一个按钮.并双击按钮.现在，您可以查看后面的代码.您可以使用F7键切换到设计器/编码器屏幕.

There is no windows form class. You should create new Windows Forms Application. You see a form. Visual studio have left side Toolbox, look at there. Toolbox contains textbox, button etc. You have to drag and drop two textbox and a button. And double click the button. Now you view code behind. You use F7 key for switch to designer/coder screen.

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