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What is an alternative to string.Replace that is case-insensitive in C#?
Replace() method is a string method. This method is used to replace all the specified Unicode characters or specified string from the current string object and returns a new modified string. This method can be overloaded by passing arguments to it.
Example 1
To replace even the case sensitive charaters Regular expressions provide a powerful, flexible, and efficient method for processing text. The extensive pattern-matching notation of regular expressions enables you to quickly parse large amounts of text to:
Find specific character patterns.
Validate text to ensure that it matches a predefined pattern (such as an email address).
Extract, edit, replace, or delete text substrings.
Add extracted strings to a collection in order to generate a report.
Example 2
class Program{
static void Main(string[] args){
String str = "Cricket Team";
Console.WriteLine("OldString : " + str);
Console.WriteLine("NewString: " + str.Replace('e', 'E'));
Console.WriteLine("
OldString: " + str);
Console.ReadLine();
}
}Output
OldString : Cricket Team NewString: CrickEt TEam OldString: Cricket Team
Example 3
static void Main(string[] args){
String str = "Cricket Team";
Console.WriteLine("OldString : " + str);{
Console.WriteLine("NewString: " + CaseInsenstiveReplace("Cricket Team", "t", "b"));
Console.WriteLine("
OldString: " + str);
Console.ReadLine();
}
static string CaseInsenstiveReplace(string originalString, string oldValue, string newValue){
Regex regEx = new Regex(oldValue,
RegexOptions.IgnoreCase | RegexOptions.Multiline);
return regEx.Replace(originalString, newValue);
}
}Output
OldString : Cricket Team NewString: Crickeb beam OldString: Cricket Team
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