| Overload | Description |
|---|---|
| IndexOf(Mailbox) | Searches for the specified value and returns the zero-based index of the first occurrence within the entire collection. |
| IndexOf(Object) | Searches for the specified value and returns the zero-based index of the first occurrence within the entire collection. |
| IndexOf(Object,Int32) | (Inherited from System.Collections.ArrayList) |
| IndexOf(Object,Int32,Int32) | (Inherited from System.Collections.ArrayList) |
Target Platforms: Microsoft .NET Framework 2.0