Magento - Dynamic lisbox in module edit entries form

I want to make a dynamic lisbox in the edit form for an entry of a custom table. How to edit the开发者_开发知识库 file "Edit/Tab/Form.php" for this purpose??

Thanks

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Since your question does not say about where you want to add a dynamic listbox if you want to add in the product edit with its options from your custom data source. You must create a product attribute.

You can see this link for detailed procedure.

http://subesh.com.np/2010/01/creating-custom-sourced-multiselect-product-attribute/