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If I have 5 String variables and between 0 and 5 of them are null or empty is there an easy/short way of returning the first one that is not null or empty? I am using .NET 3.5
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Using the isEmpty() Method The isEmpty() method returns true or false depending on whether or not our string contains any text. It's easily chainable with a string == null check, and can even differentiate between blank and empty strings: String string = "Hello there"; if (string == null || string.
You can use the IsNullOrWhiteSpace method to test whether a string is null , its value is String. Empty, or it consists only of white-space characters.
The Java programming language distinguishes between null and empty strings. An empty string is a string instance of zero length, whereas a null string has no value at all. An empty string is represented as "" . It is a character sequence of zero characters.
isEmpty(<string>) Checks if the <string> value is an empty string containing no characters or whitespace. Returns true if the string is null or empty.
var myString = new string[]{first, second, third, fouth, fifth} .FirstOrDefault(s => !string.IsNullOrEmpty(s)) ?? ""; //if myString == "", then none of the strings contained a value edit: removed Where(), placed predicate in FirstOrDefault(), thanks Yuriy
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