有String.Replace的方法只打了“整個單詞”我需要一種方法來做到這一點："test, and test but not testing. But yes to test".Replace("test", "text")歸還這個："text, and text but not testing. But yes to text"基本上我想替換整個單詞，但不是部分匹配。注意：我將不得不使用VB（SSRS 2008代碼），但C＃是我的正常語言，因此兩者中的響應都很好。
3 回答
慕容森
TA貢獻1853條經(jīng)驗 獲得超18個贊
正如Sga評論的那樣，正則表達式解決方案并不完美。我猜也不會表現(xiàn)友好。
這是我的貢獻：
public static class StringExtendsionsMethods{
public static String ReplaceWholeWord ( this String s, String word, String bywhat )
{
char firstLetter = word[0];
StringBuilder sb = new StringBuilder();
bool previousWasLetterOrDigit = false;
int i = 0;
while ( i < s.Length - word.Length + 1 )
{
bool wordFound = false;
char c = s[i];
if ( c == firstLetter )
if ( ! previousWasLetterOrDigit )
if ( s.Substring ( i, word.Length ).Equals ( word ) )
{
wordFound = true;
bool wholeWordFound = true;
if ( s.Length > i + word.Length )
{
if ( Char.IsLetterOrDigit ( s[i+word.Length] ) )
wholeWordFound = false;
}
if ( wholeWordFound )
sb.Append ( bywhat );
else
sb.Append ( word );
i += word.Length;
}
if ( ! wordFound )
{
previousWasLetterOrDigit = Char.IsLetterOrDigit ( c );
sb.Append ( c );
i++;
}
}
if ( s.Length - i > 0 )
sb.Append ( s.Substring ( i ) );
return sb.ToString ();
}}...對于測試用例：
String a = "alpha is alpha";Console.WriteLine ( a.ReplaceWholeWord ( "alpha", "alphonse" ) );Console.WriteLine ( a.ReplaceWholeWord ( "alpha", "alf" ) );a = "alphaisomega";Console.WriteLine ( a.ReplaceWholeWord ( "alpha", "xxx" ) );a = "aalpha is alphaa";Console.WriteLine ( a.ReplaceWholeWord ( "alpha", "xxx" ) );a = "alpha1/alpha2/alpha3";Console.WriteLine ( a.ReplaceWholeWord ( "alpha", "xxx" ) );a = "alpha/alpha/alpha";Console.WriteLine ( a.ReplaceWholeWord ( "alpha", "alphonse" ) );
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