C#中的正則表達式詳解(8)

找出所有的大寫字母

string t15 = "This IS a Test OF ALL Caps";

string p15 = @"(\b[^\Wa-z0-9_]+\b)";

MatchCollection mc15 = Regex.Matches(t15, p15);

找出小寫的單詞

string t16 = "This is A Test of lowercase";

string p16 = @"(\b[^\WA-Z0-9_]+\b)";

MatchCollection mc16 = Regex.Matches(t16, p16);

找出第一個字母為大寫的單詞

string t17 = "This is A Test of Initial Caps";

string p17 = @"(\b[^\Wa-z0-9_][^\WA-Z0-9_]*\b)";

MatchCollection mc17 = Regex.Matches(t17, p17);

找出簡單的Html語言中的鏈接

string t18 = @"

< Html>

< a href=""first.htm"">first tag text</a>

< a href=""next.htm"">next tag text</a>

< /Html>

";

string p18 = @"<A[^>]*?HREF\s*=\s*[""']?" + @"([^'"" >]+?)[ '""]?>";

MatchCollection mc18 = Regex.Matches(t18, p18, "si");