Comparing two strings, ignoring case in C#
To compare two strings in C# while ignoring their case, you can use the String.Equals() method and pass the StringComparison.OrdinalIgnoreCase option. Here's an example:
string string1 = "Hello"; string string2 = "hello"; if (string.Equals(string1, string2, StringComparison.OrdinalIgnoreCase)) { Console.WriteLine("The two strings are equal, ignoring case."); } else { Console.WriteLine("The two strings are not equal, ignoring case."); } In this example, we declare two strings string1 and string2. We then use the String.Equals() method to compare them, passing the StringComparison.OrdinalIgnoreCase option. This option specifies that the comparison should be case-insensitive.
If the two strings are equal, ignoring case, the program will output "The two strings are equal, ignoring case.". If they are not equal, ignoring case, the program will output "The two strings are not equal, ignoring case.".
Note that you can also use the String.Compare() method with the StringComparison.OrdinalIgnoreCase option to achieve the same result. Here's an example:
if (String.Compare(string1, string2, StringComparison.OrdinalIgnoreCase) == 0) { Console.WriteLine("The two strings are equal, ignoring case."); } else { Console.WriteLine("The two strings are not equal, ignoring case."); } This code has the same effect as the previous example, but uses the String.Compare() method instead of String.Equals().
Examples
1. How to Compare Two Strings Ignoring Case in C#?
string string1 = GetString1(); string string2 = GetString2(); bool areEqual = string.Equals(string1, string2, StringComparison.OrdinalIgnoreCase);
Description: This code uses string.Equals with StringComparison.OrdinalIgnoreCase to compare two strings ignoring case in C#.
2. String Comparison: Using String.Compare with StringComparison in C#
string string1 = GetString1(); string string2 = GetString2(); bool areEqual = string.Compare(string1, string2, StringComparison.OrdinalIgnoreCase) == 0;
Description: This query uses String.Compare with StringComparison.OrdinalIgnoreCase to compare two strings ignoring case in C#.
3. Comparing Strings: Using String.ToLowerInvariant() in C#
string string1 = GetString1(); string string2 = GetString2(); bool areEqual = string1.ToLowerInvariant() == string2.ToLowerInvariant();
Description: This code uses ToLowerInvariant to convert strings to lowercase and compares them for equality in C#.
4. String Equality: Using String.Equals with ToLower in C#
string string1 = GetString1(); string string2 = GetString2(); bool areEqual = string.Equals(string1.ToLower(), string2.ToLower());
Description: This query uses string.Equals after converting strings to lowercase to compare them for equality in C#.
5. Comparing Strings: Using String.ToLower() and String.CompareOrdinal() in C#
string string1 = GetString1(); string string2 = GetString2(); bool areEqual = string.CompareOrdinal(string1.ToLower(), string2.ToLower()) == 0;
Description: This code uses ToLower and String.CompareOrdinal to compare two strings ignoring case in C#.
6. String Comparison: Using StringComparison.OrdinalIgnoreCase and LINQ in C#
string string1 = GetString1(); string string2 = GetString2(); bool areEqual = string1.SequenceEqual(string2, StringComparer.OrdinalIgnoreCase);
Description: This query uses SequenceEqual with StringComparer.OrdinalIgnoreCase to compare two strings ignoring case in C#.
7. String Equality: Using String.ToLower() and String.Equals in C#
string string1 = GetString1(); string string2 = GetString2(); bool areEqual = string1.ToLower().Equals(string2.ToLower());
Description: This code uses ToLower and string.Equals to compare two strings ignoring case in C#.
8. Comparing Strings: Using String.Compare with StringComparison.OrdinalIgnoreCase in C#
string string1 = GetString1(); string string2 = GetString2(); bool areEqual = string.Compare(string1, string2, StringComparison.OrdinalIgnoreCase) == 0;
Description: This query uses String.Compare with StringComparison.OrdinalIgnoreCase to compare two strings ignoring case in C#.
9. String Equality: Using String.CompareOrdinal with ToLower in C#
string string1 = GetString1(); string string2 = GetString2(); bool areEqual = string.CompareOrdinal(string1.ToLower(), string2.ToLower()) == 0;
Description: This code uses String.CompareOrdinal after converting strings to lowercase to compare them for equality in C#.
10. String Comparison: Using StringComparer.OrdinalIgnoreCase and String.Join in C#
```csharp string string1 = GetString1(); string string2 = GetString2(); bool areEqual = String.Join("", string1).Equals(String.Join("", string2), StringComparison.OrdinalIgnoreCase); ``` Description: This query uses `StringComparer.OrdinalIgnoreCase` and `String.Join` to compare two strings ignoring case in C#. More Tags
division client stock http-patch mmap deprecation-warning decorator webrtc android-pageradapter windows-authentication
More C# Questions
- Retrieving selected row in dataGridView as an object in C#
- Check if Field Equals Null in MongoDb C# Driver 2.0
- How to use ZipArchive with memory streams in C#?
- Does comparing to Math.Min or Math.Max short-circuit in C#?
- Make dictionary read only in C#
- How to parse a JSON object in C# when don't know the key in advance?
- Is it possible to prevent EntityFramework from overwriting customized properties?
- How to get preferred language from Accept-Language request header in C#
More Everyday Utility Calculators
- Free Online Bra Size Calculator
- Free Online Golf Handicap Calculator
- Free Online Grade Point Average (GPA) Calculator
- Free Online Sleep Calculator
- Free Online Tip Calculator
More Entertainment Anecdotes Calculators
More Mixtures and solutions Calculators
- Free Online Saponification Value Calculator
- Free Online TDS Calculator
- Free Online Henderson-Hasselbalch Calculator
- Free Online Mixing Ratio Calculator
- Free Online Percent Solution Calculator