NameObjectCollectionBase.BaseGetAllValues Method

Definition

Namespace:

System.Collections.Specialized

Assembly:

System.Collections.Specialized.dll

Returns an array that contains all the values in the NameObjectCollectionBase instance.

Overloads

BaseGetAllValues()	Returns an Object array that contains all the values in the NameObjectCollectionBase instance.
BaseGetAllValues(Type)	Returns an array of the specified type that contains all the values in the NameObjectCollectionBase instance.

BaseGetAllValues()

Source:

NameObjectCollectionBase.cs

Returns an Object array that contains all the values in the NameObjectCollectionBase instance.

protected:
 cli::array <System::Object ^> ^ BaseGetAllValues();

protected object?[] BaseGetAllValues ();

member this.BaseGetAllValues : unit -> obj[]

Protected Function BaseGetAllValues () As Object()

Returns

Object[]

An Object array that contains all the values in the NameObjectCollectionBase instance.

Examples

The following code example uses BaseGetAllKeys and BaseGetAllValues to get an array of the keys or an array of the values.

#using <System.dll>
using namespace System;
using namespace System::Collections;
using namespace System::Collections::Specialized;

public ref class MyCollection : public NameObjectCollectionBase  {

private:
   DictionaryEntry^ _de;

   // Gets a key-and-value pair (DictionaryEntry) using an index.
public:
   property DictionaryEntry^ default[ int ]  {
      DictionaryEntry^ get(int index)  {
         _de->Key = this->BaseGetKey( index );
         _de->Value = this->BaseGet( index );
         return( _de );
      }
   }

   // Adds elements from an IDictionary into the new collection.
   MyCollection( IDictionary^ d )  {

      _de = gcnew DictionaryEntry();

      for each ( DictionaryEntry^ de in d )  {
         this->BaseAdd( (String^) de->Key, de->Value );
      }
   }

   // Gets a String array that contains all the keys in the collection.
   property array<String^>^ AllKeys {
      array<String^>^ get()  {
         return( this->BaseGetAllKeys() );
      }
   }

   // Gets an Object array that contains all the values in the collection.
   property Array^ AllValues  {
      Array^ get()  {
         return( this->BaseGetAllValues() );
      }
   }

   // Gets a String array that contains all the values in the collection.
   property array<String^>^ AllStringValues  {
      array<String^>^ get()  {
         return( (array<String^>^) this->BaseGetAllValues( System::String::typeid ) );
      }
   }
};

public ref class SamplesNameObjectCollectionBase  {

public:
   static void Main()  {

      // Creates and initializes a new MyCollection instance.
      IDictionary^ d = gcnew ListDictionary();
      d->Add( "red", "apple" );
      d->Add( "yellow", "banana" );
      d->Add( "green", "pear" );
      MyCollection^ myCol = gcnew MyCollection( d );
      Console::WriteLine( "Initial state of the collection (Count = {0}):", myCol->Count );
      PrintKeysAndValues( myCol );

      // Displays the list of keys.
      Console::WriteLine( "The list of keys:" );
      for each ( String^ s in myCol->AllKeys )  {
         Console::WriteLine( "   {0}", s );
      }

      // Displays the list of values of type Object.
      Console::WriteLine( "The list of values (Object):" );
      for each ( Object^ o in myCol->AllValues )  {
         Console::WriteLine( "   {0}", o->ToString() );
      }

      // Displays the list of values of type String.
      Console::WriteLine( "The list of values (String):" );
      for each ( String^ s in myCol->AllValues )  {
         Console::WriteLine( "   {0}", s );
      }
   }

public:
   static void PrintKeysAndValues( MyCollection^ myCol )  {
      for ( int i = 0; i < myCol->Count; i++ )  {
         Console::WriteLine( "[{0}] : {1}, {2}", i, myCol[i]->Key, myCol[i]->Value );
      }
   }
};

int main()
{
    SamplesNameObjectCollectionBase::Main();
}

/*
This code produces the following output.

Initial state of the collection (Count = 3):
[0] : red, apple
[1] : yellow, banana
[2] : green, pear
The list of keys:
   red
   yellow
   green
The list of values (Object):
   apple
   banana
   pear
The list of values (String):
   apple
   banana
   pear

*/

using System;
using System.Collections;
using System.Collections.Specialized;

public class MyCollection : NameObjectCollectionBase  {

   private DictionaryEntry _de = new DictionaryEntry();

   // Gets a key-and-value pair (DictionaryEntry) using an index.
   public DictionaryEntry this[ int index ]  {
      get  {
         _de.Key = this.BaseGetKey( index );
         _de.Value = this.BaseGet( index );
         return( _de );
      }
   }

   // Adds elements from an IDictionary into the new collection.
   public MyCollection( IDictionary d )  {
      foreach ( DictionaryEntry de in d )  {
         this.BaseAdd( (String) de.Key, de.Value );
      }
   }

   // Gets a String array that contains all the keys in the collection.
   public String[] AllKeys  {
      get  {
         return( this.BaseGetAllKeys() );
      }
   }

   // Gets an Object array that contains all the values in the collection.
   public Array AllValues  {
      get  {
         return( this.BaseGetAllValues() );
      }
   }

   // Gets a String array that contains all the values in the collection.
   public String[] AllStringValues  {
      get  {
         return( (String[]) this.BaseGetAllValues( typeof(System.String) ) );
      }
   }
}

public class SamplesNameObjectCollectionBase  {

   public static void Main()  {

      // Creates and initializes a new MyCollection instance.
      IDictionary d = new ListDictionary();
      d.Add( "red", "apple" );
      d.Add( "yellow", "banana" );
      d.Add( "green", "pear" );
      MyCollection myCol = new MyCollection( d );
      Console.WriteLine( "Initial state of the collection (Count = {0}):", myCol.Count );
      PrintKeysAndValues( myCol );

      // Displays the list of keys.
      Console.WriteLine( "The list of keys:" );
      foreach ( String s in myCol.AllKeys )  {
         Console.WriteLine( "   {0}", s );
      }

      // Displays the list of values of type Object.
      Console.WriteLine( "The list of values (Object):" );
      foreach ( Object o in myCol.AllValues )  {
         Console.WriteLine( "   {0}", o.ToString() );
      }

      // Displays the list of values of type String.
      Console.WriteLine( "The list of values (String):" );
      foreach ( String s in myCol.AllValues )  {
         Console.WriteLine( "   {0}", s );
      }
   }

   public static void PrintKeysAndValues( MyCollection myCol )  {
      for ( int i = 0; i < myCol.Count; i++ )  {
         Console.WriteLine( "[{0}] : {1}, {2}", i, myCol[i].Key, myCol[i].Value );
      }
   }
}


/*
This code produces the following output.

Initial state of the collection (Count = 3):
[0] : red, apple
[1] : yellow, banana
[2] : green, pear
The list of keys:
   red
   yellow
   green
The list of values (Object):
   apple
   banana
   pear
The list of values (String):
   apple
   banana
   pear

*/

Imports System.Collections
Imports System.Collections.Specialized

Public Class MyCollection
   Inherits NameObjectCollectionBase

   Private _de As New DictionaryEntry()

   ' Gets a key-and-value pair (DictionaryEntry) using an index.
   Default Public ReadOnly Property Item(index As Integer) As DictionaryEntry
      Get
         _de.Key = Me.BaseGetKey(index)
         _de.Value = Me.BaseGet(index)
         Return _de
      End Get
   End Property

   ' Adds elements from an IDictionary into the new collection.
   Public Sub New(d As IDictionary)
      Dim de As DictionaryEntry
      For Each de In  d
         Me.BaseAdd(CType(de.Key, String), de.Value)
      Next de
   End Sub

   ' Gets a String array that contains all the keys in the collection.
   Public ReadOnly Property AllKeys() As String()
      Get
         Return Me.BaseGetAllKeys()
      End Get
   End Property

   ' Gets an Object array that contains all the values in the collection.
   Public ReadOnly Property AllValues() As Array
      Get
         Return Me.BaseGetAllValues()
      End Get
   End Property

   ' Gets a String array that contains all the values in the collection.
   Public ReadOnly Property AllStringValues() As String()
      Get
         Return CType(Me.BaseGetAllValues(GetType(String)), String())
      End Get
   End Property

End Class


Public Class SamplesNameObjectCollectionBase   

   Public Shared Sub Main()

      ' Creates and initializes a new MyCollection instance.
      Dim d As New ListDictionary()
      d.Add("red", "apple")
      d.Add("yellow", "banana")
      d.Add("green", "pear")
      Dim myCol As New MyCollection(d)
      Console.WriteLine("Initial state of the collection (Count = {0}):", myCol.Count)
      PrintKeysAndValues(myCol)

      ' Displays the list of keys.
      Console.WriteLine("The list of keys:")
      Dim s As String
      For Each s In  myCol.AllKeys
         Console.WriteLine("   {0}", s)
      Next s

      ' Displays the list of values of type Object.
      Console.WriteLine("The list of values (Object):")
      Dim o As Object
      For Each o In  myCol.AllValues
         Console.WriteLine("   {0}", o.ToString())
      Next o

      ' Displays the list of values of type String.
      Console.WriteLine("The list of values (String):")
      For Each s In  myCol.AllValues
         Console.WriteLine("   {0}", s)
      Next s

   End Sub

   Public Shared Sub PrintKeysAndValues(myCol As MyCollection)
      Dim i As Integer
      For i = 0 To myCol.Count - 1
         Console.WriteLine("[{0}] : {1}, {2}", i, myCol(i).Key, myCol(i).Value)
      Next i
   End Sub

End Class


'This code produces the following output.
'
'Initial state of the collection (Count = 3):
'[0] : red, apple
'[1] : yellow, banana
'[2] : green, pear
'The list of keys:
'   red
'   yellow
'   green
'The list of values (Object):
'   apple
'   banana
'   pear
'The list of values (String):
'   apple
'   banana
'   pear

Remarks

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

BaseGetAllValues(Type)

Source:

NameObjectCollectionBase.cs

Returns an array of the specified type that contains all the values in the NameObjectCollectionBase instance.

protected:
 cli::array <System::Object ^> ^ BaseGetAllValues(Type ^ type);

protected object?[] BaseGetAllValues (Type type);

member this.BaseGetAllValues : Type -> obj[]

Protected Function BaseGetAllValues (type As Type) As Object()

Parameters

type

Type

A Type that represents the type of array to return.

Returns

Object[]

An array of the specified type that contains all the values in the NameObjectCollectionBase instance.

Exceptions

ArgumentNullException

type is null.

ArgumentException

type is not a valid Type.

Remarks

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

See also

• Type