One line if in VB .NET

Question

Is it possible to do one line if statement in VB .NET? If so, how?

Answer 1

Just add Then:

If A = 1 Then A = 2

or:

If A = 1 Then _
    A = 2

Answer 2

It's actually pretty simple..

If CONDITION Then ..INSERT CODE HERE..

Answer 3

Or

IIf(CONDITION, TRUE_ACTION, FALSE_ACTION)

Answer 4

You can use the IIf function too:

CheckIt = IIf(TestMe > 1000, "Large", "Small")

Answer 5

Use IF().

Dim Result = IF(expression,<true return>,<false return>)

SEE ALSO:

• IIF becomes If, and a true ternary operator

• Is there a conditional ternary operator in VB.NET?

• Orcas introduces the IF operator - a new and improved IIF

• The Ternary Operator in VB.NET

Answer 6

Be careful with the IIf opertor though - it is not always short-circuited and both the true and false expressions are evaluated.

Answer 7

At the risk of causing some cringing by purests and c# programmers, you can use multiple statements and else in a one-line if statement in VB. In this example, y ends up 3 and not 7.

i = 1
If i = 1 Then x = 3 : y = 3 Else x = 7 : y = 7