This documentation is archived and is not being maintained.
NameObjectCollectionBase.BaseSet Method (String, Object)
Visual Studio 2010
Sets the value of the first entry with the specified key in the NameObjectCollectionBase instance, if found; otherwise, adds an entry with the specified key and value into the NameObjectCollectionBase instance.
Assembly: System (in System.dll)
Parameters
- name
- Type: System.String
The String key of the entry to set. The key can be null.
- value
- Type: System.Object
The Object that represents the new value of the entry to set. The value can be null.
| Exception | Condition |
|---|---|
| NotSupportedException | The collection is read-only. |
The following code example uses BaseSet to set the value of a specific element.
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 */
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Show: