ArraySegment Generic Structure
Assembly: mscorlib (in mscorlib.dll)
ArraySegment is a wrapper around an array that delimits a range of elements in that array. Multiple ArraySegment instances can refer to the same original array and can overlap.
The Array property returns the entire original array, not a copy of the array; therefore, changes made to the array returned by the Array property are made to the original array.
The original array must be one-dimensional and must have zero-based indexing.
The following code example passes an ArraySegment structure to a method.
using namespace System; namespace Sample { public ref class SampleArray { public: static void Work() { // Create and initialize a new string array. array <String^>^ words = {"The", "quick", "brown", "fox", "jumps", "over", "the", "lazy", "dog"}; // Display the initial contents of the array. Console::WriteLine("The first array segment" " (with all the array's elements) contains:"); PrintIndexAndValues(words); // Define an array segment that contains the entire array. ArraySegment<String^> segment(words); // Display the contents of the ArraySegment. Console::WriteLine("The first array segment" " (with all the array's elements) contains:"); PrintIndexAndValues(segment); // Define an array segment that contains the middle five // values of the array. ArraySegment<String^> middle(words, 2, 5); // Display the contents of the ArraySegment. Console::WriteLine("The second array segment" " (with the middle five elements) contains:"); PrintIndexAndValues(middle); // Modify the fourth element of the first array // segment segment.Array[3] = "LION"; // Display the contents of the second array segment // middle. Note that the value of its second element // also changed. Console::WriteLine("After the first array segment" " is modified,the second array segment" " now contains:"); PrintIndexAndValues(middle); Console::ReadLine(); } static void PrintIndexAndValues(ArraySegment<String^>^ segment) { for (int i = segment->Offset; i < (segment->Offset + segment->Count); i++) { Console::WriteLine(" [{0}] : {1}", i, segment->Array[i]); } Console::WriteLine(); } static void PrintIndexAndValues(array<String^>^ words) { for (int i = 0; i < words->Length; i++) { Console::WriteLine(" [{0}] : {1}", i, words[i]); } Console::WriteLine(); } }; } int main() { Sample::SampleArray::Work(); return 0; } /* This code produces the following output. The original array initially contains: [0] : The [1] : quick [2] : brown [3] : fox [4] : jumps [5] : over [6] : the [7] : lazy [8] : dog The first array segment (with all the array's elements) contains: [0] : The [1] : quick [2] : brown [3] : fox [4] : jumps [5] : over [6] : the [7] : lazy [8] : dog The second array segment (with the middle five elements) contains: [2] : brown [3] : fox [4] : jumps [5] : over [6] : the After the first array segment is modified, the second array segment now contains: [2] : brown [3] : LION [4] : jumps [5] : over [6] : the */
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.