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Possible Duplicate:
In C#, should I use string.Empty or String.Empty or “”?
What is the difference between:
return string.Empty;
return String.Empty;
return "";
Since
stringis a language alias forString, there is absolutely no difference between the first and the second expressions.Starting with .NET 2,
""returns exactly the same object asString.Empty, making all three statements exact equivalents of each other in terms of the value that they return. Even in .NET prior to 2 no multiple objects would be created due to interning.The first and second snippets will produce IL code that is different from the third snippet, but they all would return the same object.