IIF in C#

Most people try to make the argument that C Sharp doesn't have a lot of the helper functions like VB.NET. That may be true in some cases but not all. In VB developers have the luxury of using function

ITPro Today

January 27, 2004

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Most people try to make the argument that C Sharp doesn't have a lot of the helper functions like VB.NET. That may be true in some cases but not all. In VB developers have the luxury of using functions like IIF which accepts a boolean expression and two object parameters for true part and false part and returns the corresponding string. Yes, it is true that C# doesn't have an IIF function but us C# developers have the same functionality just different syntax. It is called the Conditional Operator. The syntax is as follows.

logical-or-expression ? expression : conditional-expression

Below is an example of the C# version of an IIF Function.

The conditional operator (? :) is a ternary operator (it takes three operands). The conditional operator works as follows:

  • The first operand is implicitly converted to bool. It is evaluated and all side effects are completed before continuing.

  • If the first operand evaluates to true (1), the second operand is evaluated.

  • If the first operand evaluates to false (0), the third operand is evaluated.

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