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c#、asp.net基础程序练习下载
资源介绍
命名变量，变量计算等（WindowsFormsApplication1）：
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 WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
textBox1.Text="hello";
string teststring="hello, world!"; //定义变量
textBox1.Text = teststring;
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void button2_Click(object sender, EventArgs e)
{
int testint1 = 1000; //定义变量
int testint2 = 60;
testint2 += 60;
testint1 /= 2;
textBox1.Text = Convert.ToString(testint1 + testint2); //变量相加
textBox2.Text = Convert.ToString(testint1 % testint2); //变量取余数
textBox3.Text = Convert.ToString( testint2); //取最终变量数
textBox4.Text = Convert.ToString(testint1); //取最终变量数
textBox5.Text = Convert.ToString(--testint1); //取自减一
textBox6.Text = Convert.ToString(++testint1); //取自加以
textBox7.Text = Convert.ToString(testint1--); //取自减一
textBox8.Text = Convert.ToString(testint1); //取自减一
textBox9.Text = "\"hello, \n world!\""; //换行符和转移符
textBox10.Text = testint1 > testint2 ? "大于" : "不大于"; // > 的选择
textBox11.Text = testint1 == testint2 ? "相等" : "不相等"; // == 的选择
textBox12.Text = testint1 != testint2 ? "不相等" : "相等"; // != 的选择
Boolean testboolean = true;
label1.Text = Convert.ToString(testboolean);
label2.Text = Convert.ToString(!testboolean);
label3.Text = Convert.ToString(6 == 3 & 3 > 6); // 需要两个都满足是true，否则false
label4.Text = Convert.ToString(6 != 3 & 3 < 6);
label5.Text = Convert.ToString(6 != 3 ^ 3 > 6); // 需要两个都满足或都不满足是false，否则true
textBox13.Text = Convert.ToString(10 << 3); //二进制的计算
textBox14.Text = Convert.ToString(10 >> 3); //二进制的计算
}
private void textBox6_TextChanged(object sender, EventArgs e)
{
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void textBox13_TextChanged(object sender, EventArgs e)
{
}
private void button3_Click(object sender, EventArgs e)
{
int testint1 = 1;
int testsum = 0;
while (testint1 <= 100)
{ //while语句
testsum += testint1;
testint1++;
}
label9.Text = "计算结果为：" + testsum;
string teststring = textBox17.Text;
switch (teststring)
{ //case语句
case "第一":
label6.Text = "第一个条件满足";
break;
case "第二":
label7.Text = "第二个条件满足";
break;
default:
label8.Text = "其他情况";
break;
}
}
private void textBox15_TextChanged(object sender, EventArgs e)
{
}
private void textBox17_TextChanged(object sender, EventArgs e)
{
}
private void button4_Click(object sender, EventArgs e)
{
int testint = 100;
if (testint > 60) //if语句
{
textBox15.Text = "大于60";
}
else if (testint > 80)
{
textBox15.Text = "大于80";
}
else if (testint > 200)
{
textBox15.Text = "小于200";
}
textBox16.Text = "好的";
goto hello; //goto语句
hello:
textBox16.Text = "hello";
}
}
}