CSharpTest.Net
AddOrUpdate(TKey,Converter<TKey,TValue>,KeyValueUpdate<TKey,TValue>) Method
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CSharpTest.Net.Library Assembly > CSharpTest.Net.Collections Namespace > SynchronizedDictionary<TKey,TValue> Class > AddOrUpdate Method : AddOrUpdate(TKey,Converter<TKey,TValue>,KeyValueUpdate<TKey,TValue>) Method

key
fnCreate
fnUpdate

Glossary Item Box

Adds a key/value pair to the IDictionary if the key does not already exist, or updates a key/value pair if the key already exists.

Syntax

Visual Basic (Declaration) 
Public Overloads Function AddOrUpdate( _
   ByVal key As TKey, _
   ByVal fnCreate As Converter(Of TKey,TValue), _
   ByVal fnUpdate As CSharpTest.Net.Collections.KeyValueUpdate(Of TKey,TValue) _
) As TValue
C# 
public TValue AddOrUpdate( 
   TKey key,
   Converter<TKey,TValue> fnCreate,
   CSharpTest.Net.Collections.KeyValueUpdate<TKey,TValue> fnUpdate
)

Parameters

key
fnCreate
fnUpdate

Example

Library/Library.Test/TestSynchronizedCollections.cs

C#Copy Code
SynchronizedDictionary<int, string> data =
    new SynchronizedDictionary<int, string>(new Dictionary<int, string>());
Assert.AreEqual("a", data.AddOrUpdate(1, "a", (k, v) => k.ToString()));
Assert.AreEqual("1", data.AddOrUpdate(1, "a", (k, v) => k.ToString()));

Assert.AreEqual("b", data.AddOrUpdate(2, k => "b", (k, v) => k.ToString()));
Assert.AreEqual("2", data.AddOrUpdate(2, k => "b", (k, v) => k.ToString()));
VB.NETCopy Code
Dim data As New SynchronizedDictionary(Of Integer, String)(New Dictionary(Of Integer, String)())
Assert.AreEqual("a", data.AddOrUpdate(1, "a", Function(k, v) k.ToString()))
Assert.AreEqual("1", data.AddOrUpdate(1, "a", Function(k, v) k.ToString()))

Assert.AreEqual("b", data.AddOrUpdate(2, Function(k) "b", Function(k, v) k.ToString()))
Assert.AreEqual("2", data.AddOrUpdate(2, Function(k) "b", Function(k, v) k.ToString()))

Requirements

Target Platforms: Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7

See Also

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