ArrayList.SetRange(Int32, ICollection) Metoda

Definice

Obor názvů:

System.Collections

Sestavení:

netstandard.dll, System.Runtime.dll

Zdroj:

ArrayList.cs

Zkopíruje prvky kolekce v rozsahu prvků v objektu ArrayList.

public:
 virtual void SetRange(int index, System::Collections::ICollection ^ c);

public virtual void SetRange(int index, System.Collections.ICollection c);

abstract member SetRange : int * System.Collections.ICollection -> unit
override this.SetRange : int * System.Collections.ICollection -> unit

Public Overridable Sub SetRange (index As Integer, c As ICollection)

Parametry

index

Int32

Index založený na ArrayList nule, na kterém se mají začít kopírovat prvky .c

c

ICollection

Jejíž ICollection prvky mají být zkopírovány do ArrayList. Samotná kolekce nemůže být null, ale může obsahovat prvky, které jsou null.

Výjimky

ArgumentOutOfRangeException

Hodnota index je menší než nula.

nebo

index plus počet prvků v c je větší než Count.

ArgumentNullException

c je null.

NotSupportedException

Je ArrayList jen pro čtení.

Příklady

Následující příklad kódu ukazuje, jak nastavit a získat rozsah prvků v souboru ArrayList.

using System;
using System.Collections;
public class SamplesArrayList  {

   public static void Main()  {

      // Creates and initializes a new ArrayList.
      ArrayList myAL = new ArrayList();
      myAL.Add( "The" );
      myAL.Add( "quick" );
      myAL.Add( "brown" );
      myAL.Add( "fox" );
      myAL.Add( "jumps" );
      myAL.Add( "over" );
      myAL.Add( "the" );
      myAL.Add( "lazy" );
      myAL.Add( "dog" );

      // Creates and initializes the source ICollection.
      Queue mySourceList = new Queue();
      mySourceList.Enqueue( "big" );
      mySourceList.Enqueue( "gray" );
      mySourceList.Enqueue( "wolf" );

      // Displays the values of five elements starting at index 0.
      ArrayList mySubAL = myAL.GetRange( 0, 5 );
      Console.WriteLine( "Index 0 through 4 contains:" );
      PrintValues( mySubAL, '\t' );

      // Replaces the values of five elements starting at index 1 with the values in the ICollection.
      myAL.SetRange( 1, mySourceList );

      // Displays the values of five elements starting at index 0.
      mySubAL = myAL.GetRange( 0, 5 );
      Console.WriteLine( "Index 0 through 4 now contains:" );
      PrintValues( mySubAL, '\t' );
   }

   public static void PrintValues( IEnumerable myList, char mySeparator )  {
      foreach ( Object obj in myList )
         Console.Write( "{0}{1}", mySeparator, obj );
      Console.WriteLine();
   }
}


/*
This code produces the following output.

Index 0 through 4 contains:
        The     quick   brown   fox     jumps
Index 0 through 4 now contains:
        The     big     gray    wolf    jumps
*/

Imports System.Collections

Public Class SamplesArrayList

    Public Shared Sub Main()

        ' Creates and initializes a new ArrayList.
        Dim myAL As New ArrayList()
        myAL.Add("The")
        myAL.Add("quick")
        myAL.Add("brown")
        myAL.Add("fox")
        myAL.Add("jumps")
        myAL.Add("over")
        myAL.Add("the")
        myAL.Add("lazy")
        myAL.Add("dog")

        ' Creates and initializes the source ICollection.
        Dim mySourceList As New Queue()
        mySourceList.Enqueue("big")
        mySourceList.Enqueue("gray")
        mySourceList.Enqueue("wolf")

        ' Displays the values of five elements starting at index 0.
        Dim mySubAL As ArrayList = myAL.GetRange(0, 5)
        Console.WriteLine("Index 0 through 4 contains:")
        PrintValues(mySubAL, vbTab)

        ' Replaces the values of five elements starting at index 1 with the values in the ICollection.
        myAL.SetRange(1, mySourceList)

        ' Displays the values of five elements starting at index 0.
        mySubAL = myAL.GetRange(0, 5)
        Console.WriteLine("Index 0 through 4 now contains:")
        PrintValues(mySubAL, vbTab)

    End Sub

    Public Shared Sub PrintValues(myList As IEnumerable, mySeparator As Char)
        Dim obj As [Object]
        For Each obj In  myList
            Console.Write("{0}{1}", mySeparator, obj)
        Next obj
        Console.WriteLine()
    End Sub

End Class


' This code produces the following output.
' 
' Index 0 through 4 contains:
'         The     quick   brown   fox     jumps
' Index 0 through 4 now contains:
'         The     big     gray    wolf    jumps

Poznámky

ArrayList přijímá null jako platnou hodnotu a umožňuje duplicitní prvky.

Pořadíprvkůch ICollectionArrayList

Tato metoda je O(n) operace, kde n je Count.

Viz také

• AddRange(ICollection)
• InsertRange(Int32, ICollection)
• GetRange(Int32, Int32)
• RemoveRange(Int32, Int32)