给你看最基础的this调用
windows form 加法运算
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace 练习1求和
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
string str1 = textBox1.Text;
string str2 = textBox2.Text;
int i1, i2;
if (!int.TryParse(str1, out i1))
{
MessageBox.Show("第一个数不是合法整数");
return;
}
if (!int.TryParse(str2, out i2))
{
MessageBox.Show("第二个数不是合法整数");
return;
}
int i3 = i1 + i2;
textBox3.Text = Convert.ToString(i3);
}
}
}
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