EventDescriptorCollection Class
Represents a collection of EventDescriptor objects.
Assembly: System (in System.dll)
The EventDescriptorCollection type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() | EventDescriptorCollection(array<EventDescriptor>) | Initializes a new instance of the EventDescriptorCollection class with the given array of EventDescriptor objects. |
![]() | EventDescriptorCollection(array<EventDescriptor>, Boolean) | Initializes a new instance of the EventDescriptorCollection class with the given array of EventDescriptor objects. The collection is optionally read-only. |
| Name | Description | |
|---|---|---|
![]() ![]() | Count | Gets the number of event descriptors in the collection. |
![]() ![]() | Item[Int32] | Gets or sets the event with the specified index number. |
![]() ![]() | Item[String] | Gets or sets the event with the specified name. |
| Name | Description | |
|---|---|---|
![]() ![]() | Add | Adds an EventDescriptor to the end of the collection. |
![]() ![]() | Clear | Removes all objects from the collection. |
![]() ![]() | Contains | Returns whether the collection contains the given EventDescriptor. |
![]() ![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() ![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() ![]() | Find | Gets the description of the event with the specified name in the collection. |
![]() ![]() | GetEnumerator | Gets an enumerator for this EventDescriptorCollection. |
![]() ![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() ![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() ![]() | IndexOf | Returns the index of the given EventDescriptor. |
![]() ![]() | Insert | Inserts an EventDescriptor to the collection at a specified index. |
![]() | InternalSort(IComparer) | Sorts the members of this EventDescriptorCollection, using the specified IComparer. |
![]() | InternalSort(array<String>) | Sorts the members of this EventDescriptorCollection. The specified order is applied first, followed by the default sort for this collection, which is usually alphabetical. |
![]() ![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() ![]() | Remove | Removes the specified EventDescriptor from the collection. |
![]() ![]() | RemoveAt | Removes the EventDescriptor at the specified index from the collection. |
![]() | Sort() | Sorts the members of this EventDescriptorCollection, using the default sort for this collection, which is usually alphabetical. |
![]() | Sort(IComparer) | Sorts the members of this EventDescriptorCollection, using the specified IComparer. |
![]() | Sort(array<String>) | Sorts the members of this EventDescriptorCollection, given a specified sort order. |
![]() | Sort(array<String>, IComparer) | Sorts the members of this EventDescriptorCollection, given a specified sort order and an IComparer. |
![]() ![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() | AsParallel | Enables parallelization of a query. (Defined by ParallelEnumerable.) |
![]() | AsQueryable | Converts an IEnumerable to an IQueryable. (Defined by Queryable.) |
![]() ![]() | Cast<TResult> | Casts the elements of an IEnumerable to the specified type. (Defined by Enumerable.) |
![]() ![]() | OfType<TResult> | Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.) |
| Name | Description | |
|---|---|---|
![]() ![]() ![]() | ICollection::CopyTo | Copies the elements of the collection to an Array, starting at a particular Array index. |
![]() ![]() ![]() | ICollection::Count | Gets the number of elements contained in the collection. |
![]() ![]() ![]() | ICollection::IsSynchronized | Gets a value indicating whether access to the collection is synchronized. |
![]() ![]() ![]() | ICollection::SyncRoot | Gets an object that can be used to synchronize access to the collection. |
![]() ![]() ![]() | IEnumerable::GetEnumerator | Returns an enumerator that iterates through a collection. |
![]() ![]() ![]() | IList::Add | Adds an item to the collection. |
![]() ![]() ![]() | IList::Clear | Removes all the items from the collection. |
![]() ![]() ![]() | IList::Contains | Determines whether the collection contains a specific value. |
![]() ![]() ![]() | IList::IndexOf | Determines the index of a specific item in the collection. |
![]() ![]() ![]() | IList::Insert | Inserts an item to the collection at the specified index. |
![]() ![]() ![]() | IList::IsFixedSize | Gets a value indicating whether the collection has a fixed size. |
![]() ![]() ![]() | IList::IsReadOnly | Gets a value indicating whether the collection is read-only. |
![]() ![]() ![]() | IList::Item | Gets or sets the element at the specified index. |
![]() ![]() ![]() | IList::Remove | Removes the first occurrence of a specific object from the collection. |
![]() ![]() ![]() | IList::RemoveAt | Removes the item at the specified index. |
EventDescriptorCollection is read-only; it does not implement methods that add or remove events. You must inherit from this class to implement these methods.
Using the properties available in the EventDescriptorCollection class, you can query the collection about its contents. Use the Count property to determine the number of elements in the collection. Use the Item property to get a specific property by index number or by name.
You can also use the Find method to get a description of the event with the specified name from the collection.
Note |
|---|
The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: Synchronization. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes. |
The following code example prints all the events on a button in a text box. It requires that button1 and textBox1 have been instantiated on a form.
private: void MyEventCollection() { // Creates a new collection and assigns it the events for button1. EventDescriptorCollection^ events = TypeDescriptor::GetEvents( button1 ); // Displays each event in the collection in a text box. for each ( EventDescriptor^ myEvent in events ) { textBox1->Text = String::Concat( textBox1->Text, myEvent->Name, "\n" ); } }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

