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Array Class

Provides methods for creating, manipulating, searching, and sorting arrays, thereby serving as the base class for all arrays in the common language runtime.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

[SerializableAttribute]
[ComVisibleAttribute(true)]
public abstract class Array : ICloneable, 
	IList, ICollection, IEnumerable, IStructuralComparable, IStructuralEquatable

The Array type exposes the following members.

  NameDescription
Public propertySupported by the XNA FrameworkIsFixedSizeGets a value indicating whether the Array has a fixed size.
Public propertySupported by the XNA FrameworkIsReadOnlyGets a value indicating whether the Array is read-only.
Public propertySupported by the XNA FrameworkIsSynchronizedGets a value indicating whether access to the Array is synchronized (thread safe).
Public propertySupported by the XNA FrameworkSupported by Portable Class LibraryLengthGets a 32-bit integer that represents the total number of elements in all the dimensions of the Array.
Public propertyLongLengthGets a 64-bit integer that represents the total number of elements in all the dimensions of the Array.
Public propertySupported by the XNA FrameworkSupported by Portable Class LibraryRankGets the rank (number of dimensions) of the Array.
Public propertySupported by the XNA FrameworkSyncRootGets an object that can be used to synchronize access to the Array.
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  NameDescription
Public methodStatic memberAsReadOnly<T>Returns a read-only wrapper for the specified array.
Public methodStatic memberSupported by the XNA FrameworkBinarySearch(Array, Object)Searches an entire one-dimensional sorted Array for a specific element, using the IComparable interface implemented by each element of the Array and by the specified object.
Public methodStatic memberBinarySearch(Array, Object, IComparer)Searches an entire one-dimensional sorted Array for a value using the specified IComparer interface.
Public methodStatic memberBinarySearch(Array, Int32, Int32, Object)Searches a range of elements in a one-dimensional sorted Array for a value, using the IComparable interface implemented by each element of the Array and by the specified value.
Public methodStatic memberSupported by the XNA FrameworkBinarySearch(Array, Int32, Int32, Object, IComparer)Searches a range of elements in a one-dimensional sorted Array for a value, using the specified IComparer interface.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryBinarySearch<T>(T[], T)Searches an entire one-dimensional sorted Array for a specific element, using the IComparable<T> generic interface implemented by each element of the Array and by the specified object.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryBinarySearch<T>(T[], T, IComparer<T>)Searches an entire one-dimensional sorted Array for a value using the specified IComparer<T> generic interface.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryBinarySearch<T>(T[], Int32, Int32, T)Searches a range of elements in a one-dimensional sorted Array for a value, using the IComparable<T> generic interface implemented by each element of the Array and by the specified value.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryBinarySearch<T>(T[], Int32, Int32, T, IComparer<T>)Searches a range of elements in a one-dimensional sorted Array for a value, using the specified IComparer<T> generic interface.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryClearSets a range of elements in the Array to zero, to false, or to null, depending on the element type.
Public methodSupported by the XNA FrameworkCloneCreates a shallow copy of the Array.
Public methodStatic memberConstrainedCopyCopies a range of elements from an Array starting at the specified source index and pastes them to another Array starting at the specified destination index. Guarantees that all changes are undone if the copy does not succeed completely.
Public methodStatic memberConvertAll<TInput, TOutput>Converts an array of one type to an array of another type.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryCopy(Array, Array, Int32)Copies a range of elements from an Array starting at the first element and pastes them into another Array starting at the first element. The length is specified as a 32-bit integer.
Public methodStatic memberCopy(Array, Array, Int64)Copies a range of elements from an Array starting at the first element and pastes them into another Array starting at the first element. The length is specified as a 64-bit integer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryCopy(Array, Int32, Array, Int32, Int32)Copies a range of elements from an Array starting at the specified source index and pastes them to another Array starting at the specified destination index. The length and the indexes are specified as 32-bit integers.
Public methodStatic memberCopy(Array, Int64, Array, Int64, Int64)Copies a range of elements from an Array starting at the specified source index and pastes them to another Array starting at the specified destination index. The length and the indexes are specified as 64-bit integers.
Public methodSupported by the XNA FrameworkCopyTo(Array, Int32)Copies all the elements of the current one-dimensional Array to the specified one-dimensional Array starting at the specified destination Array index. The index is specified as a 32-bit integer.
Public methodCopyTo(Array, Int64)Copies all the elements of the current one-dimensional Array to the specified one-dimensional Array starting at the specified destination Array index. The index is specified as a 64-bit integer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryCreateInstance(Type, Int32)Creates a one-dimensional Array of the specified Type and length, with zero-based indexing.
Public methodStatic memberSupported by the XNA FrameworkCreateInstance(Type, Int32[])Creates a multidimensional Array of the specified Type and dimension lengths, with zero-based indexing. The dimension lengths are specified in an array of 32-bit integers.
Public methodStatic memberCreateInstance(Type, Int64[])Creates a multidimensional Array of the specified Type and dimension lengths, with zero-based indexing. The dimension lengths are specified in an array of 64-bit integers.
Public methodStatic memberCreateInstance(Type, Int32, Int32)Creates a two-dimensional Array of the specified Type and dimension lengths, with zero-based indexing.
Public methodStatic memberCreateInstance(Type, Int32[], Int32[])Creates a multidimensional Array of the specified Type and dimension lengths, with the specified lower bounds.
Public methodStatic memberCreateInstance(Type, Int32, Int32, Int32)Creates a three-dimensional Array of the specified Type and dimension lengths, with zero-based indexing.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Public methodStatic memberExists<T>Determines whether the specified array contains elements that match the conditions defined by the specified predicate.
Protected methodSupported by the XNA FrameworkSupported by Portable Class LibraryFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodStatic memberFind<T>Searches for an element that matches the conditions defined by the specified predicate, and returns the first occurrence within the entire Array.
Public methodStatic memberFindAll<T>Retrieves all the elements that match the conditions defined by the specified predicate.
Public methodStatic memberFindIndex<T>(T[], Predicate<T>)Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the entire Array.
Public methodStatic memberFindIndex<T>(T[], Int32, Predicate<T>)Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the range of elements in the Array that extends from the specified index to the last element.
Public methodStatic memberFindIndex<T>(T[], Int32, Int32, Predicate<T>)Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the first occurrence within the range of elements in the Array that starts at the specified index and contains the specified number of elements.
Public methodStatic memberFindLast<T>Searches for an element that matches the conditions defined by the specified predicate, and returns the last occurrence within the entire Array.
Public methodStatic memberFindLastIndex<T>(T[], Predicate<T>)Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the last occurrence within the entire Array.
Public methodStatic memberFindLastIndex<T>(T[], Int32, Predicate<T>)Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the last occurrence within the range of elements in the Array that extends from the first element to the specified index.
Public methodStatic memberFindLastIndex<T>(T[], Int32, Int32, Predicate<T>)Searches for an element that matches the conditions defined by the specified predicate, and returns the zero-based index of the last occurrence within the range of elements in the Array that contains the specified number of elements and ends at the specified index.
Public methodStatic memberForEach<T>Performs the specified action on each element of the specified array.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryGetEnumeratorReturns an IEnumerator for the Array.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryGetLengthGets a 32-bit integer that represents the number of elements in the specified dimension of the Array.
Public methodGetLongLengthGets a 64-bit integer that represents the number of elements in the specified dimension of the Array.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryGetLowerBoundGets the lower bound of the specified dimension in the Array.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryGetUpperBoundGets the upper bound of the specified dimension in the Array.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryGetValue(Int32)Gets the value at the specified position in the one-dimensional Array. The index is specified as a 32-bit integer.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryGetValue(Int32[])Gets the value at the specified position in the multidimensional Array. The indexes are specified as an array of 32-bit integers.
Public methodGetValue(Int64)Gets the value at the specified position in the one-dimensional Array. The index is specified as a 64-bit integer.
Public methodGetValue(Int64[])Gets the value at the specified position in the multidimensional Array. The indexes are specified as an array of 64-bit integers.
Public methodGetValue(Int32, Int32)Gets the value at the specified position in the two-dimensional Array. The indexes are specified as 32-bit integers.
Public methodGetValue(Int64, Int64)Gets the value at the specified position in the two-dimensional Array. The indexes are specified as 64-bit integers.
Public methodGetValue(Int32, Int32, Int32)Gets the value at the specified position in the three-dimensional Array. The indexes are specified as 32-bit integers.
Public methodGetValue(Int64, Int64, Int64)Gets the value at the specified position in the three-dimensional Array. The indexes are specified as 64-bit integers.
Public methodStatic memberIndexOf(Array, Object)Searches for the specified object and returns the index of the first occurrence within the entire one-dimensional Array.
Public methodStatic memberIndexOf(Array, Object, Int32)Searches for the specified object and returns the index of the first occurrence within the range of elements in the one-dimensional Array that extends from the specified index to the last element.
Public methodStatic memberSupported by the XNA FrameworkIndexOf(Array, Object, Int32, Int32)Searches for the specified object and returns the index of the first occurrence within the range of elements in the one-dimensional Array that starts at the specified index and contains the specified number of elements.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryIndexOf<T>(T[], T)Searches for the specified object and returns the index of the first occurrence within the entire Array.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryIndexOf<T>(T[], T, Int32)Searches for the specified object and returns the index of the first occurrence within the range of elements in the Array that extends from the specified index to the last element.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryIndexOf<T>(T[], T, Int32, Int32)Searches for the specified object and returns the index of the first occurrence within the range of elements in the Array that starts at the specified index and contains the specified number of elements.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryInitializeInitializes every element of the value-type Array by calling the default constructor of the value type.
Public methodStatic memberLastIndexOf(Array, Object)Searches for the specified object and returns the index of the last occurrence within the entire one-dimensional Array.
Public methodStatic memberLastIndexOf(Array, Object, Int32)Searches for the specified object and returns the index of the last occurrence within the range of elements in the one-dimensional Array that extends from the first element to the specified index.
Public methodStatic memberSupported by the XNA FrameworkLastIndexOf(Array, Object, Int32, Int32)Searches for the specified object and returns the index of the last occurrence within the range of elements in the one-dimensional Array that contains the specified number of elements and ends at the specified index.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryLastIndexOf<T>(T[], T)Searches for the specified object and returns the index of the last occurrence within the entire Array.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryLastIndexOf<T>(T[], T, Int32)Searches for the specified object and returns the index of the last occurrence within the range of elements in the Array that extends from the first element to the specified index.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryLastIndexOf<T>(T[], T, Int32, Int32)Searches for the specified object and returns the index of the last occurrence within the range of elements in the Array that contains the specified number of elements and ends at the specified index.
Protected methodSupported by the XNA FrameworkSupported by Portable Class LibraryMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryResize<T>Changes the number of elements of an array to the specified new size.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryReverse(Array)Reverses the sequence of the elements in the entire one-dimensional Array.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibraryReverse(Array, Int32, Int32)Reverses the sequence of the elements in a range of elements in the one-dimensional Array.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibrarySetValue(Object, Int32)Sets a value to the element at the specified position in the one-dimensional Array. The index is specified as a 32-bit integer.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibrarySetValue(Object, Int32[])Sets a value to the element at the specified position in the multidimensional Array. The indexes are specified as an array of 32-bit integers.
Public methodSetValue(Object, Int64)Sets a value to the element at the specified position in the one-dimensional Array. The index is specified as a 64-bit integer.
Public methodSetValue(Object, Int64[])Sets a value to the element at the specified position in the multidimensional Array. The indexes are specified as an array of 64-bit integers.
Public methodSetValue(Object, Int32, Int32)Sets a value to the element at the specified position in the two-dimensional Array. The indexes are specified as 32-bit integers.
Public methodSetValue(Object, Int64, Int64)Sets a value to the element at the specified position in the two-dimensional Array. The indexes are specified as 64-bit integers.
Public methodSetValue(Object, Int32, Int32, Int32)Sets a value to the element at the specified position in the three-dimensional Array. The indexes are specified as 32-bit integers.
Public methodSetValue(Object, Int64, Int64, Int64)Sets a value to the element at the specified position in the three-dimensional Array. The indexes are specified as 64-bit integers.
Public methodStatic memberSupported by the XNA FrameworkSort(Array)Sorts the elements in an entire one-dimensional Array using the IComparable implementation of each element of the Array.
Public methodStatic memberSort(Array, Array)Sorts a pair of one-dimensional Array objects (one contains the keys and the other contains the corresponding items) based on the keys in the first Array using the IComparable implementation of each key.
Public methodStatic memberSupported by the XNA FrameworkSort(Array, IComparer)Sorts the elements in a one-dimensional Array using the specified IComparer.
Public methodStatic memberSupported by the XNA FrameworkSort(Array, Array, IComparer)Sorts a pair of one-dimensional Array objects (one contains the keys and the other contains the corresponding items) based on the keys in the first Array using the specified IComparer.
Public methodStatic memberSort(Array, Int32, Int32)Sorts the elements in a range of elements in a one-dimensional Array using the IComparable implementation of each element of the Array.
Public methodStatic memberSort(Array, Array, Int32, Int32)Sorts a range of elements in a pair of one-dimensional Array objects (one contains the keys and the other contains the corresponding items) based on the keys in the first Array using the IComparable implementation of each key.
Public methodStatic memberSupported by the XNA FrameworkSort(Array, Int32, Int32, IComparer)Sorts the elements in a range of elements in a one-dimensional Array using the specified IComparer.
Public methodStatic memberSupported by the XNA FrameworkSort(Array, Array, Int32, Int32, IComparer)Sorts a range of elements in a pair of one-dimensional Array objects (one contains the keys and the other contains the corresponding items) based on the keys in the first Array using the specified IComparer.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySort<T>(T[])Sorts the elements in an entire Array using the IComparable<T> generic interface implementation of each element of the Array.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySort<T>(T[], IComparer<T>)Sorts the elements in an Array using the specified IComparer<T> generic interface.
Public methodStatic memberSupported by the XNA FrameworkSort<T>(T[], Comparison<T>)Sorts the elements in an Array using the specified Comparison<T>.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySort<T>(T[], Int32, Int32)Sorts the elements in a range of elements in an Array using the IComparable<T> generic interface implementation of each element of the Array.
Public methodStatic memberSupported by the XNA FrameworkSupported by Portable Class LibrarySort<T>(T[], Int32, Int32, IComparer<T>)Sorts the elements in a range of elements in an Array using the specified IComparer<T> generic interface.
Public methodStatic memberSupported by the XNA FrameworkSort<TKey, TValue>(TKey[], TValue[])Sorts a pair of Array objects (one contains the keys and the other contains the corresponding items) based on the keys in the first Array using the IComparable<T> generic interface implementation of each key.
Public methodStatic memberSupported by the XNA FrameworkSort<TKey, TValue>(TKey[], TValue[], IComparer<TKey>)Sorts a pair of Array objects (one contains the keys and the other contains the corresponding items) based on the keys in the first Array using the specified IComparer<T> generic interface.
Public methodStatic memberSupported by the XNA FrameworkSort<TKey, TValue>(TKey[], TValue[], Int32, Int32)Sorts a range of elements in a pair of Array objects (one contains the keys and the other contains the corresponding items) based on the keys in the first Array using the IComparable<T> generic interface implementation of each key.
Public methodStatic memberSupported by the XNA FrameworkSort<TKey, TValue>(TKey[], TValue[], Int32, Int32, IComparer<TKey>)Sorts a range of elements in a pair of Array objects (one contains the keys and the other contains the corresponding items) based on the keys in the first Array using the specified IComparer<T> generic interface.
Public methodSupported by the XNA FrameworkSupported by Portable Class LibraryToStringReturns a string that represents the current object. (Inherited from Object.)
Public methodStatic memberSupported by the XNA FrameworkTrueForAll<T>Determines whether every element in the array matches the conditions defined by the specified predicate.
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  NameDescription
Public Extension MethodAsParallelEnables parallelization of a query. (Defined by ParallelEnumerable.)
Public Extension MethodSupported by Portable Class LibraryAsQueryableConverts an IEnumerable to an IQueryable. (Defined by Queryable.)
Public Extension MethodSupported by the XNA FrameworkSupported by Portable Class LibraryCast<TResult>Casts the elements of an IEnumerable to the specified type. (Defined by Enumerable.)
Public Extension MethodSupported by the XNA FrameworkSupported by Portable Class LibraryOfType<TResult>Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.)
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  NameDescription
Explicit interface implemetationPrivate methodSupported by Portable Class LibraryICollection.CopyToCopies the elements of the Array to another Array, starting at the specified index.
Explicit interface implemetationPrivate propertySupported by the XNA FrameworkSupported by Portable Class LibraryICollection.CountGets the number of elements contained in the Array.
Explicit interface implemetationPrivate propertySupported by Portable Class LibraryICollection.IsSynchronizedGets a value that indicates whether access to the Array is synchronized (thread safe).
Explicit interface implemetationPrivate propertySupported by Portable Class LibraryICollection.SyncRootGets an object that can be used to synchronize access to the Array.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkSupported by Portable Class LibraryIList.AddAdds an item to IList.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkSupported by Portable Class LibraryIList.ClearRemoves all items from the IList.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkSupported by Portable Class LibraryIList.ContainsDetermines whether an element is in the IList.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkSupported by Portable Class LibraryIList.IndexOfDetermines the index of a specific item in the IList.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkSupported by Portable Class LibraryIList.InsertInserts an item to the IList at the specified index.
Explicit interface implemetationPrivate propertySupported by Portable Class LibraryIList.IsFixedSizeGets a value that indicates whether the Array has a fixed size.
Explicit interface implemetationPrivate propertySupported by Portable Class LibraryIList.IsReadOnlyGets a value that indicates whether the Array is read-only.
Explicit interface implemetationPrivate propertySupported by the XNA FrameworkSupported by Portable Class LibraryIList.ItemGets or sets the element at the specified index.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkSupported by Portable Class LibraryIList.RemoveRemoves the first occurrence of a specific object from the IList.
Explicit interface implemetationPrivate methodSupported by the XNA FrameworkSupported by Portable Class LibraryIList.RemoveAtRemoves the IList item at the specified index.
Explicit interface implemetationPrivate methodIStructuralComparable.CompareToDetermines whether the current collection object precedes, occurs in the same position as, or follows another object in the sort order.
Explicit interface implemetationPrivate methodIStructuralEquatable.EqualsDetermines whether an object is equal to the current instance.
Explicit interface implemetationPrivate methodIStructuralEquatable.GetHashCodeReturns a hash code for the current instance.
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The Array class is the base class for language implementations that support arrays. However, only the system and compilers can derive explicitly from the Array class. Users should employ the array constructs provided by the language.

An element is a value in an Array. The length of an Array is the total number of elements it can contain. The rank of an Array is the number of dimensions in the Array. The lower bound of a dimension of an Array is the starting index of that dimension of the Array; a multidimensional Array can have different bounds for each dimension. An array can have a maximum of 32 dimensions.

Important noteImportant

In the .NET Framework version 2.0, the Array class implements the System.Collections.Generic.IList<T>, System.Collections.Generic.ICollection<T>, and System.Collections.Generic.IEnumerable<T> generic interfaces. The implementations are provided to arrays at run time, and therefore are not visible to the documentation build tools. As a result, the generic interfaces do not appear in the declaration syntax for the Array class, and there are no reference topics for interface members that are accessible only by casting an array to the generic interface type (explicit interface implementations). The key thing to be aware of when you cast an array to one of these interfaces is that members which add, insert, or remove elements throw NotSupportedException.

Type objects provide information about array type declarations. Array objects with the same array type share the same Type object.

Type.IsArray and Type.GetElementType might not return the expected results with Array because if an array is cast to the type Array, the result is an object, not an array. That is, typeof(System.Array).IsArray returns false, and typeof(System.Array).GetElementType returns null.

Unlike most classes, Array provides the CreateInstance method, instead of public constructors, to allow for late bound access.

The Array.Copy method copies elements not only between arrays of the same type but also between standard arrays of different types; it handles type casting automatically.

Some methods, such as CreateInstance, Copy, CopyTo, GetValue, and SetValue, provide overloads that accept 64-bit integers as parameters to accommodate large capacity arrays. LongLength and GetLongLength return 64-bit integers indicating the length of the array.

The Array is not guaranteed to be sorted. You must sort the Array prior to performing operations (such as BinarySearch) that require the Array to be sorted.

Using an Array object of pointers in native code is not supported and will throw a NotSupportedException for several methods.

The following code example shows how Array.Copy copies elements between an array of type integer and an array of type Object.


public class SamplesArray  {

   public static void Main()  {

      // Creates and initializes a new integer array and a new Object array.
      int[] myIntArray = new int[5] { 1, 2, 3, 4, 5 };
      Object[] myObjArray = new Object[5] { 26, 27, 28, 29, 30 };

      // Prints the initial values of both arrays.
      Console.WriteLine( "Initially," );
      Console.Write( "integer array:" );
      PrintValues( myIntArray );
      Console.Write( "Object array: " );
      PrintValues( myObjArray );

      // Copies the first two elements from the integer array to the Object array.
      System.Array.Copy( myIntArray, myObjArray, 2 );

      // Prints the values of the modified arrays.
      Console.WriteLine( "\nAfter copying the first two elements of the integer array to the Object array," );
      Console.Write( "integer array:" );
      PrintValues( myIntArray );
      Console.Write( "Object array: " );
      PrintValues( myObjArray );

      // Copies the last two elements from the Object array to the integer array.
      System.Array.Copy( myObjArray, myObjArray.GetUpperBound(0) - 1, myIntArray, myIntArray.GetUpperBound(0) - 1, 2 );

      // Prints the values of the modified arrays.
      Console.WriteLine( "\nAfter copying the last two elements of the Object array to the integer array," );
      Console.Write( "integer array:" );
      PrintValues( myIntArray );
      Console.Write( "Object array: " );
      PrintValues( myObjArray );
   }


   public static void PrintValues( Object[] myArr )  {
      foreach ( Object i in myArr )  {
         Console.Write( "\t{0}", i );
      }
      Console.WriteLine();
   }

   public static void PrintValues( int[] myArr )  {
      foreach ( int i in myArr )  {
         Console.Write( "\t{0}", i );
      }
      Console.WriteLine();
   }
}
/* 
This code produces the following output.

Initially,
integer array:  1       2       3       4       5
Object array:   26      27      28      29      30

After copying the first two elements of the integer array to the Object array,
integer array:  1       2       3       4       5
Object array:   1       2       28      29      30

After copying the last two elements of the Object array to the integer array,
integer array:  1       2       3       29      30
Object array:   1       2       28      29      30
*/


The following code example creates and initializes an Array and displays its properties and its elements.


public class SamplesArray2{

   public static void Main()  {

      // Creates and initializes a new three-dimensional Array of type Int32.
      Array myArr = Array.CreateInstance( typeof(Int32), 2, 3, 4 );
      for ( int i = myArr.GetLowerBound(0); i <= myArr.GetUpperBound(0); i++ )
         for ( int j = myArr.GetLowerBound(1); j <= myArr.GetUpperBound(1); j++ )
            for ( int k = myArr.GetLowerBound(2); k <= myArr.GetUpperBound(2); k++ )  {
               myArr.SetValue( (i*100)+(j*10)+k, i, j, k );
            }

      // Displays the properties of the Array.
      Console.WriteLine( "The Array has {0} dimension(s) and a total of {1} elements.", myArr.Rank, myArr.Length );
      Console.WriteLine( "\tLength\tLower\tUpper" );
      for ( int i = 0; i < myArr.Rank; i++ )  {
         Console.Write( "{0}:\t{1}", i, myArr.GetLength(i) );
         Console.WriteLine( "\t{0}\t{1}", myArr.GetLowerBound(i), myArr.GetUpperBound(i) );
      }

      // Displays the contents of the Array.
      Console.WriteLine( "The Array contains the following values:" );
      PrintValues( myArr );
   }


   public static void PrintValues( Array myArr )  {
      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( "\t{0}", myEnumerator.Current );
      }
      Console.WriteLine();
   }
}
/* 
This code produces the following output.

The Array has 3 dimension(s) and a total of 24 elements.
    Length    Lower    Upper
0:    2    0    1
1:    3    0    2
2:    4    0    3
The Array contains the following values:
    0    1    2    3
    10    11    12    13
    20    21    22    23
    100    101    102    103
    110    111    112    113
    120    121    122    123
*/


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

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.

Public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

This implementation does not provide a synchronized (thread safe) wrapper for an Array; however, .NET Framework classes based on Array provide their own synchronized version of the collection using the SyncRoot property.

Enumerating through a collection is intrinsically not a thread-safe procedure. Even when a collection is synchronized, other threads can still modify the collection, which causes the enumerator to throw an exception. To guarantee thread safety during enumeration, you can either lock the collection during the entire enumeration or catch the exceptions resulting from changes made by other threads.

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