This topic has not yet been rated - Rate this topic

NameObjectCollectionBase.BaseGetAllValues Method

.NET Framework 1.1

Other Versions

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

Overload List

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

[Visual Basic] Overloads Protected Function BaseGetAllValues() As Object()

[C#] protected object[] BaseGetAllValues();

[C++] protected: Object* BaseGetAllValues() __gc[];

[JScript] protected function BaseGetAllValues() : Object[];

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

[Visual Basic] Overloads Protected Function BaseGetAllValues(Type) As Object()

[C#] protected object[] BaseGetAllValues(Type);

[C++] protected: Object* BaseGetAllValues(Type*) __gc[];

[JScript] protected function BaseGetAllValues(Type) : Object[];

Example

[Visual Basic, C#, C++] The following code example uses BaseGetAllKeys and BaseGetAllValues to get an array of the keys or an array of the values.

[Visual Basic, C#, C++] Note This example shows how to use one of the overloaded versions of BaseGetAllValues. For other examples that might be available, see the individual overload topics.

[Visual Basic] 
Imports System
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 'New

   ' 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(Type.GetType("System.String")), [String]())
      End Get
   End Property

End Class 'MyCollection


Public Class SamplesNameObjectCollectionBase   

   Public Shared Sub Main()

      ' Creates and initializes a new MyCollection instance.
      Dim d = 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 'Main

   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 'PrintKeysAndValues

End Class 'SamplesNameObjectCollectionBase 


'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


[C#] 
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( Type.GetType( "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

*/

[C++] 
#using <mscorlib.dll>
#using <system.dll>

using namespace System;
using namespace System::Collections;
using namespace System::Collections::Specialized;

public __gc class MyCollection : public NameObjectCollectionBase
{
private:
   DictionaryEntry _de;

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

public:
   // Adds elements from an IDictionary* into the new collection.
   MyCollection(IDictionary* d) 
   {
      IEnumerator* myEnum = d->GetEnumerator();
      while (myEnum->MoveNext()) 
      {
         DictionaryEntry* de = __try_cast<DictionaryEntry*>(myEnum->Current);
         this->BaseAdd(__try_cast<String*>(de->Key), de->Value);
      }
   }

   // Gets a String array that contains all the keys in the collection.
   __property String* get_AllKeys()[]
   {
      return(this->BaseGetAllKeys());
   }

   // Gets an Object array that contains all the values in the collection.
   __property Object* get_AllValues()[]
   {
      return(this->BaseGetAllValues());
   }

   // Gets a String array that contains all the values in the collection.
   __property String* get_AllStringValues()[]
   {
      return((String*[]) this->BaseGetAllValues(Type::GetType(S"System::String")));
   }

};

void PrintKeysAndValues(MyCollection* myCol)
{
   for (int i = 0; i < myCol->Count; i++)
   {
      Console::WriteLine(S"->Item[ {0}] : {1}, {2}", __box(i), myCol->Item[i].Key, myCol->Item[i].Value);
   }
}

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

   // Displays the list of keys.
   Console::WriteLine(S"The list of keys:");
   IEnumerator* myEnum1 = myCol->AllKeys->GetEnumerator();
   while (myEnum1->MoveNext())
   {
      String* s = __try_cast<String*>(myEnum1->Current);

      Console::WriteLine(S" {0}", s);
   }

   // Displays the list of values of type Object.
   Console::WriteLine(S"The list of values (Object):");
   IEnumerator* myEnum2 = myCol->AllValues->GetEnumerator();
   while (myEnum2->MoveNext())
   {
      Object* o = __try_cast<Object*>(myEnum2->Current);

      Console::WriteLine(S" {0}", o);
   }

   // Displays the list of values of type String.
   Console::WriteLine(S"The list of values (String):");
   IEnumerator* myEnum3 = myCol->AllValues->GetEnumerator();
   while (myEnum3->MoveNext())
   {
      String* s = __try_cast<String*>(myEnum3->Current);

      Console::WriteLine(S" {0}", s);
   }
}


/*
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

*/

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button in the upper-left corner of the page.

NameObjectCollectionBase.BaseGetAllValues Method

Overload List

Example

See Also