Managing multiple forms

[john sutor]

I have a main form in a project that launches other forms. How do I ensure
that the same form does not get launched twice without killing the orignal
form. I other words I need a method to manage multiple forms in an app.

Thanks

John

 

[Nicholas Paldino [.NET/C# MVP]]

John,

Have the forms register themselves in a Hashtable that is static on a
class. When you want to create a new form or view an existing one, check
the hashtable. If the form is in the hashtable, then use that, otherwise,
create a new one and use that. Just make sure that if you create a new
form, you add it to the hashtable.

As for what you key the hashtable on, if all of your forms are different
types, then key on the type of the form. The value is always the instance
of the form.

Hope this helps.