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Old May 17th, 2006, 07:17 AM
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How to create a class of which only single instance be created?

Bijgupt
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Old May 17th, 2006, 07:26 AM
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With the following code:

private static SingletonClass instance = null;
private static object lockObj = new object();

private SingletonClass()
{}//constructor

public static SingletonClass Instance
{
    get
    {
        lock(lockObj)
        {
            if(instance == null)
                instance = new SingletonClass();
            return instance;
        }
    }
}

you can only use the one instance.

To use it simply use the property:
SingletonClass.Instance.WhateverMethod();

The first time you use it, the instance is initialized. All following uses will use the same instance.

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Old May 17th, 2006, 07:49 AM
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Thank you so much. I was searching the solution for long time. Now i got what i wanted. Tahnks again.

Bijgupt
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Old May 17th, 2006, 07:54 AM
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My pleasure.

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Old May 18th, 2006, 04:27 AM
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I want to create an object during runtime. The problem is that i want to supply object name at runtime. That is whatever the name user supply, object of that name should be created.How can i do this?

Bijgupt
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Old May 18th, 2006, 05:36 AM
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Please start a new thread for a new question.
Look at the Activator class, you'll need the assembly name and type.

--

Joe (Microsoft MVP - XML)
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