Place all code in the init event of the form:

SELECT userid,name FROM users ;
INTO ARRAY puric
This.ComboBox1.RowSourceType = 5
This.ComboBox1.RowSource = "puric"

I am not sure of it behaves 100%.

Why not using SQL as RowSourceType property instead of an ARRAY. With SQL, you can Requery the Combobox which is necessary especially if the data content is dynamic.

>I place a code at init method of the form to creat a array eg.
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>Then at the form, I have a combo box, record source = puric, and source type = array.
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>The problem is when the form fire 1st time, system give me a error msg the :puric is not an array.
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>Why?
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>Thank in advance.