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class System.Collections.ObjectModel.Collection<T>
Assembly: System.Runtime
Inheritance: object → Collection
Implemented Interfaces
- Generic.IList`1 (Inherits: ICollection<T>IEnumerable<T>IEnumerable)
- Generic.IReadOnlyList`1 (Inherits: IEnumerable<T>IEnumerableIReadOnlyCollection<T>)
- IList (Inherits: ICollectionIEnumerable)
Provides the base class for a generic collection.
Properties
public
int
Count
Gets the number of elements actually contained in the <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
public
T
Item
protected
Generic.IList<T>
Items
Gets a <see cref="T:System.Collections.Generic.IList`1" /> wrapper around the <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
Methods
public
void
Add(T item)
Adds an object to the end of the <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
item
The object to be added to the end of the <see cref="T:System.Collections.ObjectModel.Collection`1" /> . The value can be <see langword="null" /> for reference types.
public
void
Clear()
Removes all elements from the <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
protected
void
ClearItems()
Removes all elements from the <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
public
bool
Contains(T item)
Determines whether an element is in the <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
Returns <see langword="true" /> if <paramref name="item" /> is found in the <see cref="T:System.Collections.ObjectModel.Collection`1" /> ; otherwise, <see langword="false" /> .
item
The object to locate in the <see cref="T:System.Collections.ObjectModel.Collection`1" /> . The value can be <see langword="null" /> for reference types.
public
void
CopyTo(T[] array,
int index)
Copies the entire <see cref="T:System.Collections.ObjectModel.Collection`1" /> to a compatible one-dimensional <see cref="T:System.Array" /> , starting at the specified index of the target array.
array
The one-dimensional <see cref="T:System.Array" /> that is the destination of the elements copied from <see cref="T:System.Collections.ObjectModel.Collection`1" /> . The <see cref="T:System.Array" /> must have zero-based indexing.
index
The zero-based index in <paramref name="array" /> at which copying begins.
public
Generic.IEnumerator<T>
GetEnumerator()
Returns an enumerator that iterates through the <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
Returns An <see cref="T:System.Collections.Generic.IEnumerator`1" /> for the <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
public
int
IndexOf(T item)
Searches for the specified object and returns the zero-based index of the first occurrence within the entire <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
Returns The zero-based index of the first occurrence of <paramref name="item" /> within the entire <see cref="T:System.Collections.ObjectModel.Collection`1" /> , if found; otherwise, -1.
item
The object to locate in the <see cref="T:System.Collections.ObjectModel.Collection`1" /> . The value can be <see langword="null" /> for reference types.
public
void
Insert(int index,
T item)
Inserts an element into the <see cref="T:System.Collections.ObjectModel.Collection`1" /> at the specified index.
index
The zero-based index at which <paramref name="item" /> should be inserted.
item
The object to insert. The value can be <see langword="null" /> for reference types.
protected
void
InsertItem(int index,
T item)
Inserts an element into the <see cref="T:System.Collections.ObjectModel.Collection`1" /> at the specified index.
index
The zero-based index at which <paramref name="item" /> should be inserted.
item
The object to insert. The value can be <see langword="null" /> for reference types.
public
bool
Remove(T item)
Removes the first occurrence of a specific object from the <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
Returns <see langword="true" /> if <paramref name="item" /> is successfully removed; otherwise, <see langword="false" /> . This method also returns <see langword="false" /> if <paramref name="item" /> was not found in the original <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
item
The object to remove from the <see cref="T:System.Collections.ObjectModel.Collection`1" /> . The value can be <see langword="null" /> for reference types.
public
void
RemoveAt(int index)
Removes the element at the specified index of the <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
index
The zero-based index of the element to remove.
protected
void
RemoveItem(int index)
Removes the element at the specified index of the <see cref="T:System.Collections.ObjectModel.Collection`1" /> .
index
The zero-based index of the element to remove.
protected
void
SetItem(int index,
T item)
Replaces the element at the specified index.
index
The zero-based index of the element to replace.
item
The new value for the element at the specified index. The value can be <see langword="null" /> for reference types.
public
bool
Equals(object obj)
Inherited from object
Determines whether the specified object is equal to the current object.
Returns <see langword="true" /> if the specified object is equal to the current object; otherwise, <see langword="false" /> .
obj
The object to compare with the current object.
protected
void
Finalize()
Inherited from object
Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.
public
int
GetHashCode()
Inherited from object
Serves as the default hash function.
Returns A hash code for the current object.
public
Type
GetType()
Inherited from object
Gets the <see cref="T:System.Type" /> of the current instance.
Returns The exact runtime type of the current instance.
protected
object
MemberwiseClone()
Inherited from object
Creates a shallow copy of the current <see cref="T:System.Object" /> .
Returns A shallow copy of the current <see cref="T:System.Object" /> .
public
string
ToString()
Inherited from object
Returns a string that represents the current object.
Returns A string that represents the current object.