var search = "world";
var replacement = "csharp";
string result = Regex.Replace(
stringToLookInto,
Regex.Escape(search),
replacement.Replace("$","$$"),
RegexOptions.IgnoreCase
);
Regex.Escape अगर आप उपयोगकर्ता इनपुट पर भरोसा करते हैं उपयोगी है जो शामिल कर सकते हैं Regex भाषा तत्वों
अपडेट करें
टिप्पणियों के लिए धन्यवाद, आपको वास्तव में प्रतिस्थापन स्ट्रिंग से बचने की ज़रूरत नहीं है।
यहाँ एक छोटी सी बेला है जो कोड का परीक्षण करती है :
using System;
using System.Text.RegularExpressions;
public class Program
{
public static void Main()
{
var tests = new[] {
new { Input="abcdef", Search="abc", Replacement="xyz", Expected="xyzdef" },
new { Input="ABCdef", Search="abc", Replacement="xyz", Expected="xyzdef" },
new { Input="A*BCdef", Search="a*bc", Replacement="xyz", Expected="xyzdef" },
new { Input="abcdef", Search="abc", Replacement="x*yz", Expected="x*yzdef" },
new { Input="abcdef", Search="abc", Replacement="$", Expected="$def" },
};
foreach(var test in tests){
var result = ReplaceCaseInsensitive(test.Input, test.Search, test.Replacement);
Console.WriteLine(
"Success: {0}, Actual: {1}, {2}",
result == test.Expected,
result,
test
);
}
}
private static string ReplaceCaseInsensitive(string input, string search, string replacement){
string result = Regex.Replace(
input,
Regex.Escape(search),
replacement.Replace("$","$$"),
RegexOptions.IgnoreCase
);
return result;
}
}
इसका आउटपुट है:
Success: True, Actual: xyzdef, { Input = abcdef, Search = abc, Replacement = xyz, Expected = xyzdef }
Success: True, Actual: xyzdef, { Input = ABCdef, Search = abc, Replacement = xyz, Expected = xyzdef }
Success: True, Actual: xyzdef, { Input = A*BCdef, Search = a*bc, Replacement = xyz, Expected = xyzdef }
Success: True, Actual: x*yzdef, { Input = abcdef, Search = abc, Replacement = x*yz, Expected = x*yzdef}
Success: True, Actual: $def, { Input = abcdef, Search = abc, Replacement = $, Expected = $def }