实现网址的自动识别

public static string Auto(string str)

//========================//

// www.

// http://

// ftp://

// xx@xx.xx

// mms://

//========================//

{

Reg = new Regex("([^\\]=>])(http://[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)");

str = Reg.Replace(str,"$1<a href=\"$2\" target=\"_blank\">$2</a>");

Reg = new Regex("^(http://[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)");

str = Reg.Replace(str,"<a href=\"$1\" target=\"_blank\">$1</a>");

Reg = new Regex("(http://[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)$");

str = Reg.Replace(str,"<a href=\"$1\" target=\"_blank\">$1</a>");

Reg = new Regex("([^\\]=>])(ftp://[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)");

str = Reg.Replace(str,"$1<a href=\"$2\" target=\"_blank\">$2</a>");

Reg = new Regex("^(ftp://[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)");

str = Reg.Replace(str,"<a href=\"$1\" target=\"_blank\">$1</a>");

Reg = new Regex("(ftp://[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)$");

str = Reg.Replace(str,"<a href=\"$1\" target=\"_blank\">$1</a>");

Reg = new Regex("([^\\]=>])(mms://[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)");

str = Reg.Replace(str,"$1<a href=\"$2\" target=\"_blank\">$2</a>");

Reg = new Regex("^(mms://[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)");

str = Reg.Replace(str,"<a href=\"$1\" target=\"_blank\">$1</a>");

Reg = new Regex("(mms://[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)$");

str = Reg.Replace(str,"<a href=\"$1\" target=\"_blank\">$1</a>");

Reg = new Regex("([a-z0-9_A-Z\\-\\.]{1,20})@([a-z0-9_\\-]{1,15})\\.([a-z]{2,4})");

str = Reg.Replace(str,"<a href=\"mailto:$1@$2.$3\" target=\"_blank\">$1@$2.$3</a>");

Reg = new Regex("([^/])(www.[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)");

str = Reg.Replace(str,"$1<a href=\"http://$2\" target=\"_blank\">$2</a>");

Reg = new Regex("^(www.[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)");

str = Reg.Replace(str,"<a href=\"http://$1\" target=\"_blank\">$1</a>");

Reg = new Regex("(www.[A-Za-z0-9\\./=\\?%\\-&_~`@':+!]+)$");

str = Reg.Replace(str,"<a href=\"http://$1\" target=\"_blank\">$1</a>");

return str;

}

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