Hello,

How to make mdi and child form for this code?

TIA

>Larry,
>
>I ran the code through a converter and here are the results:
>
>

>Class frmClients
>   Private Shared m_instance As frmClients
>
>   Shared Function Instance(parent As Form) As frmClients
>      If m_instance Is Nothing Then
>         m_instance = New frmClients(parent)
>      End If
>      Return m_instance
>   End Function 'Instance
>
>   Private Sub New(parent As Form)
>      ...
>   End Sub 'New
>End Class 'frmClients '
>

>
>Then elsewhere in your code to call the form
>

>frmClient.Instance(this).Show
>

>
>
>>Hi,
>>im using VB.NET im not familiar in CS
>>
>>TIA
>>
>>>Larry,
>>>
>>>One approach is to use the Singleton design pattern. Here is a link to an article that describes this:
>>>
>>>http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnbda/html/singletondespatt.asp
>>>
>>>Here is an example about how to limit your form to only one instance:
>>>
>>>1. Make the constructor of your form private.
>>>2. Add a private static variable to your form, that is the type of your form.
>>>3. Add a public static read-only property to your form that is the type of your form.
>>>4. In the get method of this property, if the static variable is null, create a new instance of the form. Then return the static variable.
>>>
>>>Instead of a property, you can use a function.
>>>
>>>

>>>class frmClients
>>>{
>>>#Region " Singleton Pattern "
>>>    static frmClients m_instance;
>>>    static frmClients Instance(Form parent)
>>>    {
>>>        if (m_instance == null)
>>>            m_instance = new frmClients(parent);
>>>        return m_instance;
>>>    }
>>>    private frmClients(Form parent)
>>>    {
>>>        ...
>>>    }
>>>#End Region
>>>}
>>>

>>>
>>>Then elsewhere in your code to call the form
>>>

>>>frmClient.Instance(this).Show;
>>>

>>>
>>>IMPORTANT: Handle either the Closed or Closing event of frmClients by setting m_instance to null in Closed.
>>>
>>>
>>>>Hi,
>>>>
>>>>I have mdi form and inside of the mdi form i have menu name "Form1" when i click the menu "Form1" the child form1 will popup as a child..but when i again the menu "Form1" the child form1 will popup again..
>>>>
>>>>how to control the form1 child to activate only once and detect if they are still activated...
>>>>
>>>>TIA
>>>>
>>>>Larry Santos