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   <title>c# Regex kullanımı : 1. &#214;rnek (.?) nedir // Not:her...</title>
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    <![CDATA[<strong>Yazar:</strong> <a href="http://forum.datakent.com/member_profile.asp?PF=4094" rel="nofollow">aziz.alkurt</a><br /><strong>Konu:</strong> 2311<br /><strong>Gönderim Zamanı:</strong> 15.Subat.2012 Saat 23:15<br /><br />1. Örnek (.?) nedir // Not:her harf olabilir<br>----------------------------------------------------------------------------------------------------------------------<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; string word = "asasdaazizsfasdfsdfdfd";<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regex rx = new Regex("az(.?)z", RegexOptions.IgnoreCase);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; foreach (Match m in rx.Matches(word))<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Value="aziz" olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Index=6 olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<br>----------------------------------------------------------------------------------------------------------------------<br>Burada istenen şu dur. ilk harf 'a' ikinci harf 'z' 3. harf herşey olabilir 4. harf 'z' olacak<br><br>2. Örnek (.*?) nedir //&nbsp; Not:'*' istenen harf peşpeşe gelebilir<br>----------------------------------------------------------------------------------------------------------------------<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; string word = "asasdaaziertyzsfasdfsdfdfd";<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regex rx = new Regex("az(.*?)z", RegexOptions.IgnoreCase);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; foreach (Match m in rx.Matches(word))<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Value="aziertyz" olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Index=6 olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Length=8 olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<br>----------------------------------------------------------------------------------------------------------------------<br>Burada istenen şu dur. ilk harf 'a' ikinci harf 'z' 3. harf ve sonrası herşey olabilir. Son harf 'z' olacak<br><br>3. Örnek (.*i) nedir //&nbsp; Not:'*' istenen harf ( 'i' ) peşpeşe gelebilir.<br>----------------------------------------------------------------------------------------------------------------------<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; string word = "asasdaaziiiiiiiiiizsfasdfsdfdfd";<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regex rx = new Regex("az(.*i)z", RegexOptions.IgnoreCase);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; foreach (Match m in rx.Matches(word))<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Value="aziiiiiiiiiiz" olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Index=6 olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Length=13 olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<br>----------------------------------------------------------------------------------------------------------------------<br>Burada istenen şu dur. ilk harf 'a' ikinci harf 'z' 3. harf&nbsp; 'i' olacak ve sonrası 'i' olabilir. Son harf 'z' olacak<br><br>4. Örnek (.*(i|x|y|k)) ifadesi nedir //&nbsp; Not:'*' istenen harf ( 'i' veya 'x' veya 'y' veya 'k') peşpeşe gelebilir.<br>----------------------------------------------------------------------------------------------------------------------<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; string word = "asasdaaziiixiyikkiiizsfasdfsdfdfd";<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regex rx = new Regex("az(.*(i|x|y|k))z", RegexOptions.IgnoreCase);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; foreach (Match m in rx.Matches(word))<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Value="aziiixiyikkiiiz" olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Index=6 olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Length=15 olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<br>----------------------------------------------------------------------------------------------------------------------<br>Burada istenen şu dur. ilk harf 'a' ikinci harf 'z' 3. harf&nbsp; 'i' veya 'x' veya 'y' veya 'k' olacak ve sonrası 'i' veya 'x' veya 'y' veya 'k' olabilir. Son harf 'z' olacak<br><br>5. Örnek &nbsp; &#091;0-9&#093; gibi &#091;0-9A-F&#093; gibi ifadeler nedir &nbsp;&nbsp;&nbsp;&nbsp; //harfin hangi aralıkta olacağını ifade eder (ASCII koda göre index aralığı)<br>----------------------------------------------------------------------------------------------------------------------<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp;&nbsp; string word = "sxpFxhg";<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regex rx = new Regex("&#091;0-9A-F&#093;", RegexOptions.IgnoreCase);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; foreach (Match m in rx.Matches(word))<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Value="F" olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Index=3 olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Length=1 olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<br>Burada istenen kelime içerisindeki 0-9 aralığında ve (0 ve 9 da olabilir tabiki) veya A-F aralığında olan harfi getir.<br><br>6. Örnek özel harf içeren aramalar nasıl yapılır.<br>'\','{','}','(',')','*',... gibi harfler regex için özel karakterlerdir. Bunun için bu harfler içeren kelime ararken bu karakterin başına '\' harfi koymak gerekir.<br>----------------------------------------------------------------------------------------------------------------------<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; string word = "asasasasz*zasasasas";<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regex rx = new Regex("z\\*z", RegexOptions.IgnoreCase);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; foreach (Match m in rx.Matches(word))<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Value="z*z" olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Index=8 olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; //m.Length=3 olur<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<br>----------------------------------------------------------------------------------------------------------------------<br>Buradaki arama amacı birinci harf'z', ikinci harf '*',üçüncü harf 'z' olan kelimeleri getir.<br><br>Regex özellikleri saymakla bitmez. Bu örnekleri birleştirerek ve iç içe kullanarak güzel ve dinamik aramalar yapma dileğiyle<br>]]>
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   <pubDate>Wed, 15 Feb 2012 23:15:53 +0000</pubDate>
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