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C# Strings: When Should I Use `==` vs. `Equals()` for Comparison?

Patricia Arquette
Patricia ArquetteOriginal
2025-02-01 19:06:15783browse

C# Strings: When Should I Use `==` vs. `Equals()` for Comparison?

C# string comparison differences:

and == Equals() When comparing the string in C#, understanding the subtle difference between

and

operational characters is very important. Although they seem to be able to swap, in some cases, they will have different results. == Equals() In a given code fragment, we have two conditional sentences to compare the selected Listboxitem content with the string "Energy Attack". Surprisingly, Back to FALSE,

Return True.

== In order to understand this paradox, the mechanism of these operators must be understood: .Equals()

Curbers:
    When used for objects (including string),
  • calls object.referenceequals static method, this method checks whether the two references point to the same example. == Method: == On the other hand,
  • is a virtual method defined in the System.Object class. When calling on the string, it covers the default and execute content -based character comparison.
  • Equals In this specific example, the Content attribute of Listboxitem may contain a string object created using the NEW keyword, which leads to different references. Therefore, Comparison (inspection reference) fails, but Equals comparison (inspection content) is successful.
This difference highlights the importance of choosing an appropriate comparison operator according to the required behavior. If you need to quote equal nature, please use

; if the goal is equal content, please select ==. By understanding the subtleties of these operators, you can ensure that accurate string comparisons are performed in the C# application. .Equals()

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