IList<T>.IndexOf(T) Method
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Determines the index of a specific item in the IList<T>.
public:
int IndexOf(T item);
public int IndexOf (T item);
abstract member IndexOf : 'T -> int
Public Function IndexOf (item As T) As Integer
- item
- T
The object to locate in the IList<T>.
The index of item
if found in the list; otherwise, -1.
If an object occurs multiple times in the list, the IndexOf method always returns the first instance found.
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1 |
UWP | 10.0 |
Collaborate with us on GitHub
The source for this content can be found on GitHub, where you can also create and review issues and pull requests. For more information, see our contributor guide.
.NET feedback
.NET is an open source project. Select a link to provide feedback: