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This might sound like a noob question, but are:
string var; if (var == null) and
string var; if (var == string.Empty) The same?
Duplicate
What’s the Difference between String.Empty and Null? and In C#, should I use String.Empty or Null?
@Jay is correct, they are not the same.
String.IsNullOrEmpty()is a convenient method to check for both null and ”.