ReadOnlyCollection(Of T).IndexOf Method (T)
.NET Framework (current version)
Searches for the specified object and returns the zero-based index of the first occurrence within the entire ReadOnlyCollection(Of T).
Assembly: mscorlib (in mscorlib.dll)
Parameters
- value
-
Type:
T
The object to locate in the List(Of T). The value can be null for reference types.
Return Value
Type: System.Int32The zero-based index of the first occurrence of item within the entire ReadOnlyCollection(Of T), if found; otherwise, -1.
Implements
IList(Of T).IndexOf(T)The ReadOnlyCollection(Of T) is searched forward starting at the first element and ending at the last element.
This method determines equality using the default comparer EqualityComparer(Of T).Default.
This method performs a linear search; therefore, this method is an O(n) operation, where n is Count.
Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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