I create the Forms but now i want to open this forms using ADDon.here add on is created without integrated with VB.Net.
As far as I am aware, unless you are using the UDO default form, it is not possible to add a form to Business One without using the UI API.
You will have to manually create the Add-On and use this to add the form and it's functionality to Business One. There's an example provided with the SDK -> C:\Program Files\SAP\SAP Business One SDK\Samples\COM UI\VB.NET\03.SimpleForm.
If you do not wish to use VB.NET another supported lanaguage is C#.
Sorry I can't be more helpful,
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