20131128-正则表达式与委托
[1]网页提取职位信息
namespace 下载职位信息
{
class Program
{
static void Main(string[] args)
{
WebClient wc = new WebClient();
wc.Encoding = Encoding.Default;
string webAddress = "http://localhost:8080/【上海,IT-管理,计算机软件招聘，求职】-前程无忧.htm";
string strRegex = @"<a\s*href=""http://search.51job.com/job/\d{8},c.html"".+>(.+)</a>";
MatchCollection mat = GetWebInfo(wc, webAddress, strRegex);
foreach (Match item in mat)
{
if (item.Success)
{
Console.WriteLine(item.Groups[1].Value);
}
}
Console.WriteLine(mat.Count);
Console.ReadKey();
}
public static MatchCollection GetWebInfo(WebClient wc,string webAddress,string strRegex) {
string html = wc.DownloadString(webAddress);
Regex regex=new Regex(strRegex);
MatchCollection mat = regex.Matches(html);
return mat;
}
}
}
[2]UBB翻译案例
namespace UBB翻译案例
{
class Program
{
static void Main(string[] args)
{
string str = "听说这个论坛是[color=green]小虎[/color]做的.他是[url=http://www.itcast.cn/]传智播客[/url]的";
str = Regex.Replace(str, @"\[url=(.+)\](.+)\[/url\]的", "<a href=\"$1\">$2</a>");
Console.WriteLine(str);
Console.ReadKey();
}
}
}
[3]敏感词过滤
namespace 敏感词过滤
{
/*mgc.txt格式
成人午夜场={BANNED}
成人小说={BANNED}
出售={MOD}
*/
public partial class Form1 : Form
{
//审核
StringBuilder sbMod = new StringBuilder();
//禁止
StringBuilder sbBanned = new StringBuilder();
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
string txt = textBox1.Text;
if (Regex.IsMatch(txt,sbBanned.ToString()))
{
MessageBox.Show("禁止发帖");
}
else if (Regex.IsMatch(txt,sbMod.ToString()))
{
MessageBox.Show("需要审核");
}
else
{
textBox2.Text = txt;
}
}
private void Form1_Load(object sender, EventArgs e)
{
//创建存储敏感词的对象
string[] lines = File.ReadAllLines("mgc.txt", Encoding.Default);
for (int i = 0; i < lines.Length; i++)
{
string[] words = lines[i].Split(new char[] { '=' }, StringSplitOptions.RemoveEmptyEntries);
if (words[1] == "{BANNED}")
{
//拼接一个超级正则表达式
sbMod.Append(words[0] + "|");
}
//拼接一个超级正则表达式
else if (words[1] == "{MOD}")
{
sbBanned.Append(words[0] + "|");
}
}
sbMod.Remove(sbMod.Length - 1, 1);
sbBanned.Remove(sbBanned.Length - 1, 1);
}
}
}
[4]委托计算
namespace 委托计算2
{
class Program
{
//A类
static void Main(string[] args)
{
// string [] strs=new string[3];
string[] strs = {"qwe","df","lyui" };
//Step4: 调用B类Method2()，参数包含A类中的Method1
ChangeStr cs = new ChangeStr();
cs.ChangeString(strs, AddString);
for (int i = 0; i < strs.Length; i++)
{
Console.WriteLine(strs[i]);
}
Console.ReadKey();
}
//Step1: A类 方法Method1（）
private static string AddString(string str)
{
return "====" + str + "===";
}
}
//Step2: 将A类提供的方法定义为委托
public delegate string MyDelegateChangStr(string str);
//Step3: B类 Method2(arg*, Delegate mdl);
// 此时A中的方法可被B类带到任意处调用
public class ChangeStr
{
public void ChangeString(string [] strs,MyDelegateChangStr mdl)
{
for (int i = 0; i < strs.Length; i++)
{
strs[i] = mdl(strs[i]);
}
}
}
}
[5]两窗体传值
namespace 窗体传值2
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
//Step4:将fm1中textBox的值传给fm2，并且将改变本类textBox值得方法作为委托方法传给fm2
Form2 fm2 = new Form2(textBox1.Text, ChuanZhi);
fm2.Show();
}
//Step1: A类给本类textBox赋值的方法
private void ChuanZhi(string txt)
{
textBox1.Text = txt;
}
}
//Step2: 将A类的赋值的方法定义为委托
public delegate void MyDelegate(string txt);
}
namespace 窗体传值2
{
public partial class Form2 : Form
{
//定义一个委托属性存放传递过来的委托
MyDelegate _mdl;
public MyDelegate Mdl
{
get { return _mdl; }
set { _mdl = value; }
}
public Form2()
{
InitializeComponent();
}
//Step3： 重写窗体2构造函数，fm1-->fm2完成textBox传值；完成委托传递
public Form2(string txt, MyDelegate mdl)
: this()
{
textBox1.Text = txt;
this.Mdl = mdl;
}
private void button1_Click(object sender, EventArgs e)
{
//Step5: 完成fm1<---fm2传值
this.Mdl(textBox1.Text);
this.Close();
}
}
}
