Add a variable to a class instance at runtime: Difference between revisions

=={{header|C sharp|C#}}==

{{works with|C sharp|C#|4.0}}

<lang csharp>// ----------------------------------------------------------------------------------------------

//

// Program.cs - DynamicClassVariable

//

// Mikko Puonti, 2013

//

// ----------------------------------------------------------------------------------------------

using System;

using System.Dynamic;

namespace DynamicClassVariable

{

internal static class Program

{

#region Static Members

private static void Main()

{

// To enable late binding, we must use dynamic keyword

// ExpandoObject readily implements IDynamicMetaObjectProvider which allows us to do some dynamic magic

dynamic sampleObj = new ExpandoObject();

// Adding a new property

sampleObj.bar = 1;

Console.WriteLine( "sampleObj.bar = {0}", sampleObj.bar );

// We can also add dynamically methods and events to expando object

// More information: http://msdn.microsoft.com/en-us/library/system.dynamic.expandoobject.aspx

// This sample only show very small part of dynamic language features - there is lot's more

Console.WriteLine( "< Press any key >" );

Console.ReadKey();

}

#endregion

}

}</lang>

{{out}}

<pre>sampleObj.bar = 1

< Press any key ></pre>