Export (0) Print
Expand All

NameObjectCollectionBase.BaseGetAllValues Method ()

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

Namespace: System.Collections.Specialized
Assembly: System (in system.dll)

protected Object[] BaseGetAllValues ()
protected Object[] BaseGetAllValues ()
protected function BaseGetAllValues () : Object[]
Not applicable.

Return Value

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

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

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

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

*/

import System.* ;
import System.Collections.* ;
import System.Collections.Specialized.* ;

public class MyCollection extends NameObjectCollectionBase
{
    private DictionaryEntry _de =  new DictionaryEntry();

    // Gets a key-and-value pair (DictionaryEntry) using an index.
    /** @property 
     */
    public DictionaryEntry get_Item(int index)
    {
        _de.set_Key(this.BaseGetKey(index));
        _de.set_Value(this.BaseGet(index));
        return _de ;
    } //get_Item

    // Adds elements from an IDictionary into the new collection.
    public MyCollection(IDictionary d)
    {        
        IDictionaryEnumerator objEnum = d.GetEnumerator();

        while (objEnum.MoveNext()) {        
            DictionaryEntry de = (DictionaryEntry)objEnum.get_Current();
            this.BaseAdd(((String)(de.get_Key())), de.get_Value());
            
        }
    } //MyCollection

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

    // Gets an Object array that contains all the values in the collection.
    /** @property 
     */
    public Array get_AllValues()
    {
        return this.BaseGetAllValues() ;
    } //get_AllValues

    // Gets a String array that contains all the values in the collection.
    /** @property
     */
    public String[] get_AllStringValues()
    {
        return ((String[])(this.BaseGetAllValues(Type.GetType("System.String"))));
    } //get_AllStringValues
} //MyCollection


public class SamplesNameObjectCollectionBase
{
    public static void main(String[] args)
    {        
        // 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}):",
            System.Convert.ToString(myCol.get_Count()));
        PrintKeysAndValues(myCol);
        
        // Displays the list of keys.
        Console.WriteLine("The list of keys:");
        
        String str = new String();

        for (int iCtr = 0; iCtr < myCol.get_Count(); iCtr++) {        
            str = myCol.get_AllKeys()[iCtr];
            Console.WriteLine("   {0}", str);
        }
        
        // Displays the list of values of type Object.
        Console.WriteLine("The list of values (Object):");

        Object obj = new Object();

        for (int iCtr=0; iCtr < myCol.get_Count(); iCtr++) {        
            obj = System.Convert.ToString(myCol.get_AllValues().get_Item(iCtr));
            Console.WriteLine("   {0}", System.Convert.ToString(obj));
        }
        
        // Displays the list of values of type String.
        Console.WriteLine("The list of values (String):");
        
        for (int iCtr =0; iCtr < myCol.get_AllValues().get_Count(); iCtr++) {        
            str = System.Convert.ToString(myCol.get_AllValues().get_Item(iCtr));
            Console.WriteLine("   {0}", str);
        }
    } //main

    public static void PrintKeysAndValues(MyCollection myCol)
    {
        for (int i = 0; i < myCol.get_Count(); i++) {        
            Console.WriteLine("[{0}] : {1}, {2}",System.Convert.ToString(i),
                myCol.get_Item(i).get_Key(), myCol.get_Item(i).get_Value());
        } 
    } //PrintKeysAndValues
} //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

*/

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, 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.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

Community Additions

ADD
Show:
© 2014 Microsoft