NameObjectCollectionBase.BaseSet Método
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Establece el valor de una entrada en la instancia NameObjectCollectionBase.
| BaseSet(Int32, Object) |
Establece el valor de la entrada que se encuentra en el índice especificado de la instancia NameObjectCollectionBase. |
| BaseSet(String, Object) |
Establece el valor de la primera entrada con la clave especificada de la instancia NameObjectCollectionBase, si la encuentra; en caso contrario, agrega una entrada con la clave y el valor especificados a la instancia NameObjectCollectionBase. |
En el ejemplo de código siguiente se usa BaseSet para establecer el valor de un elemento específico.
#using <System.dll>
using namespace System;
using namespace System::Collections;
using namespace System::Collections::Specialized;
public ref class MyCollection : public NameObjectCollectionBase {
// Gets or sets the value at the specified index.
public:
property Object^ default[ int ] {
Object^ get(int index) {
return( this->BaseGet( index ) );
}
void set( int index, Object^ value ) {
this->BaseSet( index, value );
}
}
// Gets or sets the value associated with the specified key.
property Object^ default[ String^ ] {
Object^ get(String^ key) {
return( this->BaseGet( key ) );
}
void set( String^ key, Object^ value ) {
this->BaseSet( key, value );
}
}
// Gets a String array that contains all the keys in the collection.
property array<String^>^ AllKeys {
array<String^>^ get() {
return( this->BaseGetAllKeys() );
}
}
// Adds elements from an IDictionary into the new collection.
MyCollection( IDictionary^ d ) {
for each ( DictionaryEntry^ de in d ) {
this->BaseAdd( (String^) de->Key, de->Value );
}
}
};
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:" );
PrintKeysAndValues2( myCol );
Console::WriteLine();
// Sets the value at index 1.
myCol[1] = "sunflower";
Console::WriteLine( "After setting the value at index 1:" );
PrintKeysAndValues2( myCol );
Console::WriteLine();
// Sets the value associated with the key "red".
myCol["red"] = "tulip";
Console::WriteLine( "After setting the value associated with the key \"red\":" );
PrintKeysAndValues2( myCol );
}
static void PrintKeysAndValues2( MyCollection^ myCol ) {
for each ( String^ s in myCol->AllKeys ) {
Console::WriteLine( "{0}, {1}", s, myCol[s] );
}
}
};
int main()
{
SamplesNameObjectCollectionBase::Main();
}
/*
This code produces the following output.
Initial state of the collection:
red, apple
yellow, banana
green, pear
After setting the value at index 1:
red, apple
yellow, sunflower
green, pear
After setting the value associated with the key "red":
red, tulip
yellow, sunflower
green, pear
*/
using System;
using System.Collections;
using System.Collections.Specialized;
public class MyCollection : NameObjectCollectionBase {
// Gets or sets the value at the specified index.
public Object this[ int index ] {
get {
return( this.BaseGet( index ) );
}
set {
this.BaseSet( index, value );
}
}
// Gets or sets the value associated with the specified key.
public Object this[ String key ] {
get {
return( this.BaseGet( key ) );
}
set {
this.BaseSet( key, value );
}
}
// Gets a String array that contains all the keys in the collection.
public String[] AllKeys {
get {
return( this.BaseGetAllKeys() );
}
}
// 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 );
}
}
}
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:" );
PrintKeysAndValues2( myCol );
Console.WriteLine();
// Sets the value at index 1.
myCol[1] = "sunflower";
Console.WriteLine( "After setting the value at index 1:" );
PrintKeysAndValues2( myCol );
Console.WriteLine();
// Sets the value associated with the key "red".
myCol["red"] = "tulip";
Console.WriteLine( "After setting the value associated with the key \"red\":" );
PrintKeysAndValues2( myCol );
}
public static void PrintKeysAndValues2( MyCollection myCol ) {
foreach ( String s in myCol.AllKeys ) {
Console.WriteLine( "{0}, {1}", s, myCol[s] );
}
}
}
/*
This code produces the following output.
Initial state of the collection:
red, apple
yellow, banana
green, pear
After setting the value at index 1:
red, apple
yellow, sunflower
green, pear
After setting the value associated with the key "red":
red, tulip
yellow, sunflower
green, pear
*/
Imports System.Collections
Imports System.Collections.Specialized
Public Class MyCollection
Inherits NameObjectCollectionBase
' Gets or sets the value at the specified index.
Default Public Property Item(index As Integer) As [Object]
Get
Return Me.BaseGet(index)
End Get
Set
Me.BaseSet(index, value)
End Set
End Property
' Gets or sets the value associated with the specified key.
Default Public Property Item(key As [String]) As [Object]
Get
Return Me.BaseGet(key)
End Get
Set
Me.BaseSet(key, value)
End Set
End Property
' 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
' 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
End Class
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:")
PrintKeysAndValues2(myCol)
Console.WriteLine()
' Sets the value at index 1.
myCol(1) = "sunflower"
Console.WriteLine("After setting the value at index 1:")
PrintKeysAndValues2(myCol)
Console.WriteLine()
' Sets the value associated with the key "red".
myCol("red") = "tulip"
Console.WriteLine("After setting the value associated with the key ""red"":")
PrintKeysAndValues2(myCol)
End Sub
Public Shared Sub PrintKeysAndValues2(myCol As MyCollection)
Dim s As [String]
For Each s In myCol.AllKeys
Console.WriteLine("{0}, {1}", s, myCol(s))
Next s
End Sub
End Class
'This code produces the following output.
'
'Initial state of the collection:
'red, apple
'yellow, banana
'green, pear
'
'After setting the value at index 1:
'red, apple
'yellow, sunflower
'green, pear
'
'After setting the value associated with the key "red":
'red, tulip
'yellow, sunflower
'green, pear
- Source:
- NameObjectCollectionBase.cs
- Source:
- NameObjectCollectionBase.cs
- Source:
- NameObjectCollectionBase.cs
Establece el valor de la entrada que se encuentra en el índice especificado de la instancia NameObjectCollectionBase.
protected:
void BaseSet(int index, System::Object ^ value);protected void BaseSet (int index, object value);protected void BaseSet (int index, object? value);member this.BaseSet : int * obj -> unitProtected Sub BaseSet (index As Integer, value As Object)Parámetros
- index
- Int32
El índice basado en cero de la entrada que se va a establecer.
- value
- Object
Object que representa el nuevo valor de la entrada que se va a establecer. El valor puede ser null.
Excepciones
La colección es de solo lectura.
index está fuera del intervalo válido de índices de la colección.
Comentarios
Este método es una operación O(1).
Consulte también
Se aplica a
.NET 9 y otras versiones
| Producto | Versiones |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
| UWP | 10.0 |
- Source:
- NameObjectCollectionBase.cs
- Source:
- NameObjectCollectionBase.cs
- Source:
- NameObjectCollectionBase.cs
Establece el valor de la primera entrada con la clave especificada de la instancia NameObjectCollectionBase, si la encuentra; en caso contrario, agrega una entrada con la clave y el valor especificados a la instancia NameObjectCollectionBase.
protected:
void BaseSet(System::String ^ name, System::Object ^ value);protected void BaseSet (string name, object value);protected void BaseSet (string? name, object? value);member this.BaseSet : string * obj -> unitProtected Sub BaseSet (name As String, value As Object)Parámetros
- value
- Object
Object que representa el nuevo valor de la entrada que se va a establecer. El valor puede ser null.
Excepciones
La colección es de solo lectura.
Comentarios
Si la colección contiene varias entradas con la clave especificada, este método establece solo la primera entrada. Para establecer los valores de las entradas posteriores con la misma clave, use el enumerador para recorrer en iteración la colección y comparar las claves.
Este método es una operación O(1).
Consulte también
Se aplica a
.NET 9 y otras versiones
| Producto | Versiones |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
| UWP | 10.0 |
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