Export (0) Print
Expand All

SortedList.GetKeyList Method

Gets the keys in the SortedList.

[Visual Basic]
Public Overridable Function GetKeyList() As IList
[C#]
public virtual IList GetKeyList();
[C++]
public: virtual IList* GetKeyList();
[JScript]
public function GetKeyList() : IList;

Return Value

An IList containing the keys in the SortedList.

Remarks

The returned IList is a read-only view of the keys of the SortedList. Modifications made to the underlying SortedList are immediately reflected in the IList.

The elements of the returned IList are sorted in the same order as the keys of the SortedList.

Similar to Keys, but returns an IList instead of an ICollection.

Example

[Visual Basic, C#, C++] The following example shows how to get one or all the keys or values in the SortedList.

[Visual Basic] 
Imports System
Imports System.Collections
Imports Microsoft.VisualBasic

Public Class SamplesSortedList
        
    Public Shared Sub Main()
        
        ' Creates and initializes a new SortedList.
        Dim mySL As New SortedList()
        mySL.Add(1.3, "fox")
        mySL.Add(1.4, "jumped")
        mySL.Add(1.5, "over")
        mySL.Add(1.2, "brown")
        mySL.Add(1.1, "quick")
        mySL.Add(1.0, "The")
        mySL.Add(1.6, "the")
        mySL.Add(1.8, "dog")
        mySL.Add(1.7, "lazy")
        
        ' Gets the key and the value based on the index.
        Dim myIndex As Integer = 3
        Console.WriteLine("The key   at index {0} is {1}.", myIndex, _
           mySL.GetKey(myIndex))
        Console.WriteLine("The value at index {0} is {1}.", myIndex, _
           mySL.GetByIndex(myIndex))
        
        ' Gets the list of keys and the list of values.
        Dim myKeyList As IList = mySL.GetKeyList()
        Dim myValueList As IList = mySL.GetValueList()
        
        ' Prints the keys in the first column and the values in the second column.
        Console.WriteLine(ControlChars.Tab & "-KEY-" & ControlChars.Tab & _
           "-VALUE-")
        Dim i As Integer
        For i = 0 To mySL.Count - 1
            Console.WriteLine(ControlChars.Tab & "{0}" & ControlChars.Tab & _
               "{1}", myKeyList(i), myValueList(i))
        Next i
    End Sub
End Class

' This code produces the following output.
' 
' The key   at index 3 is 1.3.
' The value at index 3 is fox.
'     -KEY-    -VALUE-
'     1    The
'     1.1    quick
'     1.2    brown
'     1.3    fox
'     1.4    jumped
'     1.5    over
'     1.6    the
'     1.7    lazy
'     1.8    dog

[C#] 
using System;
using System.Collections;
public class SamplesSortedList  {

   public static void Main()  {

      // Creates and initializes a new SortedList.
      SortedList mySL = new SortedList();
      mySL.Add( 1.3, "fox" );
      mySL.Add( 1.4, "jumped" );
      mySL.Add( 1.5, "over" );
      mySL.Add( 1.2, "brown" );
      mySL.Add( 1.1, "quick" );
      mySL.Add( 1.0, "The" );
      mySL.Add( 1.6, "the" );
      mySL.Add( 1.8, "dog" );
      mySL.Add( 1.7, "lazy" );

      // Gets the key and the value based on the index.
      int myIndex=3;
      Console.WriteLine( "The key   at index {0} is {1}.", myIndex, mySL.GetKey( myIndex ) );
      Console.WriteLine( "The value at index {0} is {1}.", myIndex, mySL.GetByIndex( myIndex ) );

      // Gets the list of keys and the list of values.
      IList myKeyList = mySL.GetKeyList();
      IList myValueList = mySL.GetValueList();

      // Prints the keys in the first column and the values in the second column.
      Console.WriteLine( "\t-KEY-\t-VALUE-" );
      for ( int i = 0; i < mySL.Count; i++ )
         Console.WriteLine( "\t{0}\t{1}", myKeyList[i], myValueList[i] );
   }
}
/* 
This code produces the following output.

The key   at index 3 is 1.3.
The value at index 3 is fox.
    -KEY-    -VALUE-
    1    The
    1.1    quick
    1.2    brown
    1.3    fox
    1.4    jumped
    1.5    over
    1.6    the
    1.7    lazy
    1.8    dog
*/ 

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

using namespace System;
using namespace System::Collections;

int main()  {

   // Creates and initializes a new SortedList.
   SortedList* mySL = new SortedList();
   mySL->Add( __box(1.3), S"fox" );
   mySL->Add( __box(1.4), S"jumped" );
   mySL->Add( __box(1.5), S"over" );
   mySL->Add( __box(1.2), S"brown" );
   mySL->Add( __box(1.1), S"quick" );
   mySL->Add( __box(1.0), S"The" );
   mySL->Add( __box(1.6), S"the" );
   mySL->Add( __box(1.8), S"dog" );
   mySL->Add( __box(1.7), S"lazy" );

   // Gets the key and the value based on the index.
   int myIndex=3;
   Console::WriteLine( S"The key   at index {0} is {1}.", __box(myIndex), mySL->GetKey( myIndex ) );
   Console::WriteLine( S"The value at index {0} is {1}.", __box(myIndex), mySL->GetByIndex( myIndex ) );

   // Gets the list of keys and the list of values.
   IList* myKeyList = mySL->GetKeyList();
   IList* myValueList = mySL->GetValueList();

   // Prints the keys in the first column and the values in the second column.
   Console::WriteLine( S"\t-KEY-\t-VALUE-" );
   for ( int i = 0; i < mySL->Count; i++ )
      Console::WriteLine( S"\t{0}\t{1}", myKeyList->Item[i], myValueList->Item[i] );
}

/*
This code produces the following output.

The key   at index 3 is 1.3.
The value at index 3 is fox.
        -KEY-   -VALUE-
        1       The
        1.1     quick
        1.2     brown
        1.3     fox
        1.4     jumped
        1.5     over
        1.6     the
        1.7     lazy
        1.8     dog
*/

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

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

SortedList Class | SortedList Members | System.Collections Namespace | IList | GetValueList | Keys

Show:
© 2014 Microsoft