Hinweis
Für den Zugriff auf diese Seite ist eine Autorisierung erforderlich. Sie können versuchen, sich anzumelden oder das Verzeichnis zu wechseln.
Für den Zugriff auf diese Seite ist eine Autorisierung erforderlich. Sie können versuchen, das Verzeichnis zu wechseln.
Bestimmt, ob SortedList einen bestimmten Wert enthält.
Namespace: System.Collections
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Overridable Function ContainsValue ( _
value As Object _
) As Boolean
'Usage
Dim instance As SortedList
Dim value As Object
Dim returnValue As Boolean
returnValue = instance.ContainsValue(value)
public virtual bool ContainsValue (
Object value
)
public:
virtual bool ContainsValue (
Object^ value
)
public boolean ContainsValue (
Object value
)
public function ContainsValue (
value : Object
) : boolean
Parameter
- value
Der in SortedList zu suchende Wert. Der Wert kann NULL (Nothing in Visual Basic) sein.
Rückgabewert
true, wenn die SortedList ein Element mit dem angegebenen value enthält, andernfalls false.
Hinweise
Die Werte der Elemente von SortedList werden unter Verwendung der Equals-Methode mit dem angegebenen Wert verglichen.
Diese Methode führt eine lineare Suche aus. Die durchschnittliche Ausführungszeit ist somit proportional zu Count. Das heißt, diese Methode ist eine O(n)-Operation, wobei n gleich Count ist.
Beispiel
Im folgenden Beispiel wird gezeigt, wie das Vorhandensein eines bestimmten Elements in SortedList geprüft wird.
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(2, "two")
mySL.Add(4, "four")
mySL.Add(1, "one")
mySL.Add(3, "three")
mySL.Add(0, "zero")
' Displays the values of the SortedList.
Console.WriteLine("The SortedList contains the following values:")
PrintIndexAndKeysAndValues(mySL)
' Searches for a specific key.
Dim myKey As Integer = 2
Dim msg As String
If mySL.ContainsKey(myKey) Then
msg = "in the SortedList"
Else
msg = "NOT in the SortedList"
End If
Console.WriteLine("The key ""{0}"" is {1}.", myKey, msg)
myKey = 6
If mySL.ContainsKey(myKey) Then
msg = "in the SortedList"
Else
msg = "NOT in the SortedList"
End If
Console.WriteLine("The key ""{0}"" is {1}.", myKey, msg)
' Searches for a specific value.
Dim myValue As String = "three"
If mySL.ContainsValue(myValue) Then
msg = "in the SortedList"
Else
msg = "NOT in the SortedList"
End If
Console.WriteLine("The value ""{0}"" is {1}.", myValue, msg)
myValue = "nine"
If mySL.ContainsValue(myValue) Then
msg = "in the SortedList"
Else
msg = "NOT in the SortedList"
End If
Console.WriteLine("The value ""{0}"" is {1}.", myValue, msg)
End Sub
Public Shared Sub PrintIndexAndKeysAndValues(myList As SortedList)
Console.WriteLine(ControlChars.Tab & "-INDEX-" & ControlChars.Tab & _
"-KEY-" & ControlChars.Tab & "-VALUE-")
Dim i As Integer
For i = 0 To myList.Count - 1
Console.WriteLine(ControlChars.Tab & "[{0}]:" & ControlChars.Tab & _
"{1}" & ControlChars.Tab & "{2}", i, myList.GetKey(i), _
myList.GetByIndex(i))
Next i
Console.WriteLine()
End Sub
End Class
' This code produces the following output.
'
' The SortedList contains the following values:
' -INDEX- -KEY- -VALUE-
' [0]: 0 zero
' [1]: 1 one
' [2]: 2 two
' [3]: 3 three
' [4]: 4 four
'
' The key "2" is in the SortedList.
' The key "6" is NOT in the SortedList.
' The value "three" is in the SortedList.
' The value "nine" is NOT in the SortedList.
using System;
using System.Collections;
public class SamplesSortedList {
public static void Main() {
// Creates and initializes a new SortedList.
SortedList mySL = new SortedList();
mySL.Add( 2, "two" );
mySL.Add( 4, "four" );
mySL.Add( 1, "one" );
mySL.Add( 3, "three" );
mySL.Add( 0, "zero" );
// Displays the values of the SortedList.
Console.WriteLine( "The SortedList contains the following values:" );
PrintIndexAndKeysAndValues( mySL );
// Searches for a specific key.
int myKey = 2;
Console.WriteLine( "The key \"{0}\" is {1}.", myKey, mySL.ContainsKey( myKey ) ? "in the SortedList" : "NOT in the SortedList" );
myKey = 6;
Console.WriteLine( "The key \"{0}\" is {1}.", myKey, mySL.ContainsKey( myKey ) ? "in the SortedList" : "NOT in the SortedList" );
// Searches for a specific value.
String myValue = "three";
Console.WriteLine( "The value \"{0}\" is {1}.", myValue, mySL.ContainsValue( myValue ) ? "in the SortedList" : "NOT in the SortedList" );
myValue = "nine";
Console.WriteLine( "The value \"{0}\" is {1}.", myValue, mySL.ContainsValue( myValue ) ? "in the SortedList" : "NOT in the SortedList" );
}
public static void PrintIndexAndKeysAndValues( SortedList myList ) {
Console.WriteLine( "\t-INDEX-\t-KEY-\t-VALUE-" );
for ( int i = 0; i < myList.Count; i++ ) {
Console.WriteLine( "\t[{0}]:\t{1}\t{2}", i, myList.GetKey(i), myList.GetByIndex(i) );
}
Console.WriteLine();
}
}
/*
This code produces the following output.
The SortedList contains the following values:
-INDEX- -KEY- -VALUE-
[0]: 0 zero
[1]: 1 one
[2]: 2 two
[3]: 3 three
[4]: 4 four
The key "2" is in the SortedList.
The key "6" is NOT in the SortedList.
The value "three" is in the SortedList.
The value "nine" is NOT in the SortedList.
*/
#using <system.dll>
using namespace System;
using namespace System::Collections;
void PrintIndexAndKeysAndValues( SortedList^ myList )
{
Console::WriteLine( "\t-INDEX-\t-KEY-\t-VALUE-" );
for ( int i = 0; i < myList->Count; i++ )
{
Console::WriteLine( "\t[{0}]:\t{1}\t{2}", i, myList->GetKey( i ), myList->GetByIndex( i ) );
}
Console::WriteLine();
}
int main()
{
// Creates and initializes a new SortedList.
SortedList^ mySL = gcnew SortedList;
mySL->Add( 2, "two" );
mySL->Add( 4, "four" );
mySL->Add( 1, "one" );
mySL->Add( 3, "three" );
mySL->Add( (int^)0, "zero" );
// Displays the values of the SortedList.
Console::WriteLine( "The SortedList contains the following values:" );
PrintIndexAndKeysAndValues( mySL );
// Searches for a specific key.
int myKey = 2;
Console::WriteLine( "The key \"{0}\" is {1}.", myKey, mySL->ContainsKey( myKey ) ? (String^)"in the SortedList" : "NOT in the SortedList" );
myKey = 6;
Console::WriteLine( "The key \"{0}\" is {1}.", myKey, mySL->ContainsKey( myKey ) ? (String^)"in the SortedList" : "NOT in the SortedList" );
// Searches for a specific value.
String^ myValue = "three";
Console::WriteLine( "The value \"{0}\" is {1}.", myValue, mySL->ContainsValue( myValue ) ? (String^)"in the SortedList" : "NOT in the SortedList" );
myValue = "nine";
Console::WriteLine( "The value \"{0}\" is {1}.", myValue, mySL->ContainsValue( myValue ) ? (String^)"in the SortedList" : "NOT in the SortedList" );
}
/*
This code produces the following output.
The SortedList contains the following values:
-INDEX- -KEY- -VALUE-
[0]: 0 zero
[1]: 1 one
[2]: 2 two
[3]: 3 three
[4]: 4 four
The key "2" is in the SortedList.
The key "6" is NOT in the SortedList.
The value "three" is in the SortedList.
The value "nine" is NOT in the SortedList.
*/
import System.*;
import System.Collections.*;
public class SamplesSortedList
{
public static void main(String[] args)
{
// Creates and initializes a new SortedList.
SortedList mySL = new SortedList();
mySL.Add((Int32)2, "two");
mySL.Add((Int32)4, "four");
mySL.Add((Int32)1, "one");
mySL.Add((Int32)3, "three");
mySL.Add((Int32)0, "zero");
// Displays the values of the SortedList.
Console.WriteLine("The SortedList contains the following values:");
PrintIndexAndKeysAndValues(mySL);
// Searches for a specific key.
int myKey = 2;
Console.WriteLine("The key \"{0}\" is {1}.",
System.Convert.ToString(myKey),
(mySL.ContainsKey((Int32)myKey)) ?
"in the SortedList" : "NOT in the SortedList");
myKey = 6;
Console.WriteLine("The key \"{0}\" is {1}.",
System.Convert.ToString(myKey),
(mySL.ContainsKey((Int32)myKey)) ?
"in the SortedList" : "NOT in the SortedList");
// Searches for a specific value.
String myValue = "three";
Console.WriteLine("The value \"{0}\" is {1}.", myValue,
(mySL.ContainsValue(myValue)) ?
"in the SortedList" : "NOT in the SortedList");
myValue = "nine";
Console.WriteLine("The value \"{0}\" is {1}.", myValue,
(mySL.ContainsValue(myValue)) ?
"in the SortedList" : "NOT in the SortedList");
} //main
public static void PrintIndexAndKeysAndValues(SortedList myList)
{
Console.WriteLine("\t-INDEX-\t-KEY-\t-VALUE-");
for (int i = 0; i < myList.get_Count(); i++) {
Console.WriteLine("\t[{0}]:\t{1}\t{2}",
System.Convert.ToString(i),
System.Convert.ToString(myList.GetKey(i)),
System.Convert.ToString(myList.GetByIndex(i)));
}
Console.WriteLine();
} //PrintIndexAndKeysAndValues
} //SamplesSortedList
/*
This code produces the following output.
The SortedList contains the following values:
-INDEX- -KEY- -VALUE-
[0]: 0 zero
[1]: 1 one
[2]: 2 two
[3]: 3 three
[4]: 4 four
The key "2" is in the SortedList.
The key "6" is NOT in the SortedList.
The value "three" is in the SortedList.
The value "nine" is NOT in the SortedList.
*/
Plattformen
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile für Pocket PC, Windows Mobile für Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.
Versionsinformationen
.NET Framework
Unterstützt in: 2.0, 1.1, 1.0
.NET Compact Framework
Unterstützt in: 2.0
Siehe auch
Referenz
SortedList-Klasse
SortedList-Member
System.Collections-Namespace
ContainsKey
IndexOfValue
Weitere Ressourcen
Durchführen kulturunabhängiger Zeichenfolgenoperationen in Auflistungen