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DependencyObjectCollection<T>.IndexOf Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Gets the index of the specified object within the collection, or -1 if the object is not in the collection.

Namespace:  System.Windows
Assembly:  System.Windows (in System.Windows.dll)

Syntax

'Declaration
Public Function IndexOf ( _
    item As T _
) As Integer

public int IndexOf(
    T item
)

Parameters

  • item
    Type: T
    The object to locate in the collection.

Return Value

Type: System.Int32
The index of the first occurrence of item within the collection, or -1 if item is not in the collection.

Implements

IList<T>.IndexOf(T)

Exceptions

Exception Condition
ArgumentException

item is not a DependencyObject.

Version Information

Silverlight

Supported in: 5, 4

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.