Array.CopyTo Metodo

Definizione

Overload

Esempio

Nell'esempio di codice seguente viene illustrato come copiare un oggetto Array in un altro Arrayoggetto .

let printValues arr sep =
    for i in arr do
        printf $"{sep}{i}"
    printfn ""

// Creates and initializes two new Arrays.
let mySourceArray = 
    [| "three"
       "napping"
       "cats"
       "in"
       "the"
       "barn" |]

let myTargetArray = Array.zeroCreate 15
myTargetArray[0..8] <-
    [| "The"
       "quick"
       "brown"
       "fox"
       "jumps"
       "over"
       "the"
       "lazy"
       "dog" |]

// Displays the values of the Array.
printfn "The target Array contains the following (before and after copying):"
printValues myTargetArray ' '

// Copies the source Array to the target Array, starting at index 6.
mySourceArray.CopyTo(myTargetArray, 6)

// Displays the values of the Array.
printValues myTargetArray ' '


// This code produces the following output.
//     The target Array contains the following (before and after copying):
//      The quick brown fox jumps over the lazy dog
//      The quick brown fox jumps over three napping cats in the barn

using System;

public class SamplesArray
{

   public static void Main()
   {

      // Creates and initializes two new Arrays.
      Array mySourceArray=Array.CreateInstance(typeof(string), 6);
      mySourceArray.SetValue("three", 0);
      mySourceArray.SetValue("napping", 1);
      mySourceArray.SetValue("cats", 2);
      mySourceArray.SetValue("in", 3);
      mySourceArray.SetValue("the", 4);
      mySourceArray.SetValue("barn", 5);
      Array myTargetArray=Array.CreateInstance(typeof(string), 15);
      myTargetArray.SetValue("The", 0);
      myTargetArray.SetValue("quick", 1);
      myTargetArray.SetValue("brown", 2);
      myTargetArray.SetValue("fox", 3);
      myTargetArray.SetValue("jumps", 4);
      myTargetArray.SetValue("over", 5);
      myTargetArray.SetValue("the", 6);
      myTargetArray.SetValue("lazy", 7);
      myTargetArray.SetValue("dog", 8);

      // Displays the values of the Array.
      Console.WriteLine("The target Array contains the following (before and after copying):");
      PrintValues(myTargetArray, ' ');

      // Copies the source Array to the target Array, starting at index 6.
      mySourceArray.CopyTo(myTargetArray, 6);

      // Displays the values of the Array.
      PrintValues(myTargetArray, ' ');
   }

   public static void PrintValues(Array myArr, char mySeparator)
   {

      System.Collections.IEnumerator myEnumerator = myArr.GetEnumerator();
      int i = 0;
      int cols = myArr.GetLength(myArr.Rank - 1);
      while (myEnumerator.MoveNext())
      {
         if (i < cols)
         {
            i++;
         }
         else
         {
             Console.WriteLine();
             i = 1;
         }
         Console.Write("{0}{1}", mySeparator, myEnumerator.Current);
      }
      Console.WriteLine();
   }
}
/*
This code produces the following output.

The target Array contains the following (before and after copying):
 The quick brown fox jumps over the lazy dog
 The quick brown fox jumps over three napping cats in the barn
*/

Public Class SamplesArray    
    
    Public Shared Sub Main()
        
        ' Creates and initializes two new Arrays.
        Dim mySourceArray As Array = Array.CreateInstance(GetType(String), 6)
        mySourceArray.SetValue("three", 0)
        mySourceArray.SetValue("napping", 1)
        mySourceArray.SetValue("cats", 2)
        mySourceArray.SetValue("in", 3)
        mySourceArray.SetValue("the", 4)
        mySourceArray.SetValue("barn", 5)
        Dim myTargetArray As Array = Array.CreateInstance(GetType(String), 15)
        myTargetArray.SetValue("The", 0)
        myTargetArray.SetValue("quick", 1)
        myTargetArray.SetValue("brown", 2)
        myTargetArray.SetValue("fox", 3)
        myTargetArray.SetValue("jumps", 4)
        myTargetArray.SetValue("over", 5)
        myTargetArray.SetValue("the", 6)
        myTargetArray.SetValue("lazy", 7)
        myTargetArray.SetValue("dog", 8)
        
        ' Displays the values of the Array.
        Console.WriteLine("The target Array contains the following" _
           & "(before and after copying):")
        PrintValues(myTargetArray, " "c)
        
        ' Copies the source Array to the target Array, starting at index 6.
        mySourceArray.CopyTo(myTargetArray, 6)
        
        ' Displays the values of the Array.
        PrintValues(myTargetArray, " "c)
    End Sub    
    
    Public Shared Sub PrintValues(myArr As Array, mySeparator As Char)
        Dim myEnumerator As System.Collections.IEnumerator = _
           myArr.GetEnumerator()
        Dim i As Integer = 0
        Dim cols As Integer = myArr.GetLength((myArr.Rank - 1))
        While myEnumerator.MoveNext()
            If i < cols Then
                i += 1
            Else
                Console.WriteLine()
                i = 1
            End If
            Console.Write("{0}{1}", mySeparator, myEnumerator.Current)
        End While
        Console.WriteLine()
    End Sub
End Class

' This code produces the following output.
' 
' The target Array contains the following (before and after copying):
'  The quick brown fox jumps over the lazy dog      
'  The quick brown fox jumps over three napping cats in the barn

Nell'esempio di codice seguente viene illustrato come copiare un oggetto Array in un altro Array con un limite inferiore diverso da zero. Si noti che l'intera origine Array viene copiata, inclusi gli elementi vuoti che sovrascrivono gli elementi esistenti nella destinazione Array.

open System

let printIndexAndValues (myArray: Array) =
    for i = myArray.GetLowerBound 0 to myArray.GetUpperBound 0 do
        printfn $"\t[{i}]:\t{myArray.GetValue i}"

// Creates and initializes the source Array.
let myArrayZero = Array.zeroCreate 3
myArrayZero[0] <- "zero"
myArrayZero[1] <- "one"

// Displays the source Array.
printfn "The array with lower bound=0 contains:"
printIndexAndValues myArrayZero

// Creates and initializes the target Array.
let myArrLen = [| 4 |]
let myArrLow = [| 2 |]
let myArrayTwo = Array.CreateInstance(typeof<string>, myArrLen, myArrLow)
myArrayTwo.SetValue("two", 2)
myArrayTwo.SetValue("three", 3)
myArrayTwo.SetValue("four", 4)
myArrayTwo.SetValue("five", 5)

// Displays the target Array.
printfn "The array with lower bound=2 contains:"
printIndexAndValues myArrayTwo

// Copies from the array with lower bound=0 to the array with lower bound=2.
myArrayZero.CopyTo(myArrayTwo, 3)

// Displays the modified target Array.
printfn "\nAfter copying to the target array from index 3:"
printIndexAndValues myArrayTwo


// This code produces the following output.
//     The array with lower bound=0 contains:
//         [0]:    zero
//         [1]:    one
//         [2]:
//     The array with lower bound=2 contains:
//         [2]:    two
//         [3]:    three
//         [4]:    four
//         [5]:    five
//     
//     After copying to the target array from index 3:
//         [2]:    two
//         [3]:    zero
//         [4]:    one
//         [5]:

using System;

public class SamplesArray2
{

   public static void Main()
   {
      // Creates and initializes the source Array.
      Array myArrayZero=Array.CreateInstance(typeof(string), 3);
      myArrayZero.SetValue("zero", 0);
      myArrayZero.SetValue("one", 1);

      // Displays the source Array.
      Console.WriteLine("The array with lower bound=0 contains:");
      PrintIndexAndValues(myArrayZero);

      // Creates and initializes the target Array.
      int[] myArrLen = { 4 };
      int[] myArrLow = { 2 };
      Array myArrayTwo=Array.CreateInstance(typeof(string), myArrLen, myArrLow);
      myArrayTwo.SetValue("two", 2);
      myArrayTwo.SetValue("three", 3);
      myArrayTwo.SetValue("four", 4);
      myArrayTwo.SetValue("five", 5);

      // Displays the target Array.
      Console.WriteLine("The array with lower bound=2 contains:");
      PrintIndexAndValues(myArrayTwo);

      // Copies from the array with lower bound=0 to the array with lower bound=2.
      myArrayZero.CopyTo(myArrayTwo, 3);

      // Displays the modified target Array.
      Console.WriteLine("\nAfter copying to the target array from index 3:");
      PrintIndexAndValues(myArrayTwo);
   }

   public static void PrintIndexAndValues(Array myArray)
   {
      for (int i = myArray.GetLowerBound(0); i <= myArray.GetUpperBound(0); i++)
         Console.WriteLine("\t[{0}]:\t{1}", i, myArray.GetValue(i));
   }
}
/*
This code produces the following output.

The array with lower bound=0 contains:
    [0]:    zero
    [1]:    one
    [2]:
The array with lower bound=2 contains:
    [2]:    two
    [3]:    three
    [4]:    four
    [5]:    five

After copying to the target array from index 3:
    [2]:    two
    [3]:    zero
    [4]:    one
    [5]:
*/

Public Class SamplesArray2    
    
    Public Shared Sub Main()
        ' Creates and initializes the source Array.
        Dim myArrayZero As Array = Array.CreateInstance(GetType(String), 3)
        myArrayZero.SetValue("zero", 0)
        myArrayZero.SetValue("one", 1)
        
        ' Displays the source Array.
        Console.WriteLine("The array with lower bound=0 contains:")
        PrintIndexAndValues(myArrayZero)
        
        ' Creates and initializes the target Array.
        Dim myArrLen As Integer() = {4}
        Dim myArrLow As Integer() = {2}
        Dim myArrayTwo As Array = Array.CreateInstance(GetType(String), _
           myArrLen, myArrLow)
        myArrayTwo.SetValue("two", 2)
        myArrayTwo.SetValue("three", 3)
        myArrayTwo.SetValue("four", 4)
        myArrayTwo.SetValue("five", 5)
        
        ' Displays the target Array.
        Console.WriteLine("The array with lower bound=2 contains:")
        PrintIndexAndValues(myArrayTwo)
        
        ' Copies from the array with lower bound=0 to the array with lower bound=2.
        myArrayZero.CopyTo(myArrayTwo, 3)
        
        ' Displays the modified target Array.
        Console.WriteLine(ControlChars.Cr + "After copying to the target array from " _
           + "index 3:")
        PrintIndexAndValues(myArrayTwo)
    End Sub
    
    Public Shared Sub PrintIndexAndValues(myArray As Array)
        Dim i As Integer
        For i = myArray.GetLowerBound(0) To myArray.GetUpperBound(0)
            Console.WriteLine(ControlChars.Tab + "[{0}]:" + ControlChars.Tab _
               + "{1}", i, myArray.GetValue(i))
        Next i
    End Sub
End Class

' This code produces the following output.
' 
' The array with lower bound=0 contains:
'     [0]:    zero
'     [1]:    one
'     [2]:    
' The array with lower bound=2 contains:
'     [2]:    two
'     [3]:    three
'     [4]:    four
'     [5]:    five
' 
' After copying to the target array from index 3:
'     [2]:    two
'     [3]:    zero
'     [4]:    one
'     [5]:

public:
 virtual void CopyTo(Array ^ array, int index);

public void CopyTo(Array array, int index);

public virtual void CopyTo(Array array, int index);

abstract member CopyTo : Array * int -> unit
override this.CopyTo : Array * int -> unit

Public Sub CopyTo (array As Array, index As Integer)

Public Overridable Sub CopyTo (array As Array, index As Integer)

public:
 void CopyTo(Array ^ array, long index);

public:
 virtual void CopyTo(Array ^ array, long index);

public void CopyTo(Array array, long index);

[System.Runtime.InteropServices.ComVisible(false)]
public virtual void CopyTo(Array array, long index);

[System.Runtime.InteropServices.ComVisible(false)]
public void CopyTo(Array array, long index);

member this.CopyTo : Array * int64 -> unit

[<System.Runtime.InteropServices.ComVisible(false)>]
abstract member CopyTo : Array * int64 -> unit
override this.CopyTo : Array * int64 -> unit

[<System.Runtime.InteropServices.ComVisible(false)>]
member this.CopyTo : Array * int64 -> unit

Public Sub CopyTo (array As Array, index As Long)

Public Overridable Sub CopyTo (array As Array, index As Long)