How to: Locate an Element in an Array in Visual Basic

This example declares an array of String objects named zooAnimals, populates it, and then finds the element "turtle" and displays its ___location.

Example

This code example is also available as an IntelliSense code snippet. In the code snippet picker, it is located in Visual Basic Language. For more information, see How to: Insert Snippets Into Your Code (Visual Basic).

Public Sub findAnimal()
    Dim zooAnimals(2) As String
    zooAnimals(0) = "lion"
    zooAnimals(1) = "turtle"
    zooAnimals(2) = "ostrich"
    Dim turtleIndex As Integer
    turtleIndex = (Array.IndexOf(zooAnimals,"turtle"))
    MsgBox("The turtle is element " & turtleIndex)
End Sub

Compiling the Code

This example requires:

• Access to Mscorlib.dll and the System namespace.

Robust Programming

The following conditions may cause an exception:

• Array is empty (ArgumentNullException class)

• Array is multidimensional (RankException class)

• One or more elements of the array do not implement the IComparable interface (InvalidOperationException class)

See Also

Tasks

How to: Put a Value into an Array

How to: Get a Value from an Array

How to: Reverse the Contents of An Array in Visual Basic

How to: Sort An Array in Visual Basic

Troubleshooting Arrays

Concepts

Overview of Arrays in Visual Basic

Reference

Array.IndexOf

Other Resources

Arrays in Visual Basic