C# Programming - Strings - Discussion

There is no correct answer in this question :).

string s1 = "Test";
string s2 = String.Copy(s1);
Console.WriteLine(s1.Equals(s2));
Console.WriteLine(s1 == s2);
Console.WriteLine(Object.ReferenceEquals(s1, s2));

This will output:

True.
True.
False.

Using == is an incorrect way to compare two variable. For Example:

object str = "Hello";
object str1 = new string("Hello".ToCharArray());

Console.WriteLine(str == str1); // return false
Console.WriteLine(str.Equals(str1)); // return true

Reason behind this is == is used on an object whereas Equals is just a virtual method for string type it just compares the contents.

For strings the == operator calls the static Equals(String, String) method,

Which performs an ordinal (case-sensitive and culture-insensitive) comparison.

s1.Equals(s2)

I think this is the best practice to compare.
Yes, s1==s2 is also a way to compare.

s1 == s2 can also be used for string compare.