แก้ไข

แชร์ผ่าน

StringCollection.IList.Insert(Int32, Object) Method

  • Reference

Definition

Namespace:
System.Collections.Specialized
Assemblies:
System.dll, System.Collections.Specialized.dll
Assembly:
System.Collections.Specialized.dll
Assembly:
System.dll
Assembly:
netstandard.dll
Source:
StringCollection.cs
Source:
StringCollection.cs
Source:
StringCollection.cs

Inserts an element into the StringCollection at the specified index.

 virtual void System.Collections.IList.Insert(int index, System::Object ^ value) = System::Collections::IList::Insert;
void IList.Insert (int index, object value);
void IList.Insert (int index, object? value);
abstract member System.Collections.IList.Insert : int * obj -> unit
override this.System.Collections.IList.Insert : int * obj -> unit
Sub Insert (index As Integer, value As Object) Implements IList.Insert

Parameters

index
Int32

The zero-based index at which value should be inserted.

value
Object

The Object to insert. The value can be null.

Implements

Insert(Int32, Object)

Exceptions

ArgumentOutOfRangeException

index is less than zero.

-or-

index is greater than Count.

NotSupportedException

The StringCollection is read-only.

-or-

The StringCollection has a fixed size.

Remarks

If Count already equals the capacity, the capacity of the StringCollection is increased by automatically reallocating the internal array, and the existing elements are copied to the new array before the new element is added.

If index is equal to Count, value is added to the end of StringCollection.

In collections of contiguous elements, such as lists, the elements that follow the insertion point move down to accommodate the new element. If the collection is indexed, the indexes of the elements that are moved are also updated. This behavior does not apply to collections where elements are conceptually grouped into buckets, such as a hash table.

This method is an O(n) operation, where n is Count.

Applies to

See also