Dan,

To create a property, you must have a 'set' or a 'get' or both.

>Cathi,
>
>I added set and get to PortNumber and now it works. ???
>
>Thanks again,
>Dan
>
>>Hi Dan,
>>
>>Now I understand your question. I reread your original question and I should have figured it out. Just change your syntax to the following:
>>
>>

>>textBox1.DataBindings.Add(new Binding("text", this, "PortNumber"));
>>

>>
>>>Cathi,
>>>
>>>Thanks for answering. I don't think I made it clear what my intentions were. I want to bind the text box to a property of the form. No dataset is involved. I'm sure I've done this before (at least I think I have) but I can't find the code or remember how.
>>>
>>>Thanks,
>>>Dan
>>>
>>>>Hi Dan,
>>>>
>>>>The syntax is the typically the following:
>>>>
>>>>

>>>>textBox1.DataBindings.Add("Text",MyDataSet,"MyTable.PortNumber");
>>>>

>>>>
>>>>>Can anyone help me with a problem of binding a textBox to a form property?
>>>>>
>>>>>I have:
>>>>>
>>>>>textBox1.Bindings.Add(new Binding("text", this, "PortNumber"));
>>>>>
>>>>>I does not seem to work. I've done it before but I can't remember how.
>>>>>
>>>>>Thanks,
>>>>>Dan