//SINGLETON - C#
using NUnit.Framework;
[TestFixture()]
public class SingletonTest
{
[Test()]
public void ObjectsAreTheSameTest()
{
DeploymentInfo firstDeployment = Singleton<DeploymentInfo>.UniqueInstance;
DeploymentInfo secondDeployment = Singleton<DeploymentInfo>.UniqueInstance;
Assert.AreSame(firstDeployment, secondDeployment);
}
}
//Singleton Pattern
//Generic Version
public class Singleton<T> where T : class, new()
{
private Singleton()
{
}
private class SingletonCreator
{
static SingletonCreator()
{
}
// Private object instantiated with private constructor
static internal readonly T instance = new T();
}
public static T UniqueInstance {
get { return SingletonCreator.instance; }
}
}
'SINGLETON - VB.NET
Imports NUnit.Framework
<TestFixture()> _
Public Class SingletonTest
<Test()> _
Public Sub ObjectsAreTheSameTest()
Dim firstDeployment As DeploymentInfo = Singleton(Of DeploymentInfo).UniqueInstance
Dim secondDeployment As DeploymentInfo = Singleton(Of DeploymentInfo).UniqueInstance
Assert.AreSame(firstDeployment, secondDeployment)
End Sub
End Class
'Singleton Pattern
'Generic Version
Public Class Singleton(Of T As {Class, New})
Private Sub New()
End Sub
Private Class SingletonCreator
Shared Sub New()
End Sub
' Private object instantiated with private constructor
Friend Shared ReadOnly instance As New T()
End Class
Public Shared ReadOnly Property UniqueInstance() As T
Get
Return SingletonCreator.instance
End Get
End Property
End Class
Rick Strahl posted his session slides and samples from his ASP.NET Connections. Really good presentations.
http://west-wind.com/weblog/posts/336745.aspx
LINQPad lets you interactively query SQL databases in a modern query language: LINQ. Kiss goodbye to SQL Management Studio!
http://www.linqpad.net/Visual LINQ Query Builder
http://code.msdn.microsoft.com/vlinq/
