combobox datasource

[brain2cpu]

It is just wierd, I have something like: ArrayList al1 = .... //filled with some data combobox1.DataSource = al1; it is all OK. BUT, later I have to change the contents of the combobox, so: ArrayList al2 = .... //filled with something else combobox1.DataSource = al2; here cames up with a null DataSource (al2 is correct and no errors are shown). I also tried to get the ArrauList back: ArrayList al = (ArrayList)combobox1.DataSource; al.Add("..."); ..... but nothing changed. What could be wrong ? I would prefer the first approach.

[Colin Angus Mackay]

varadii wrote: What could be wrong ? I've not double checked this, so this may not be right.... When you assign something to the ComboBox.DataSource the ComboBox knows that the source of the data is different and will update its contents accordingly. However if you just add an element to the array the ComboBox knows nothing of this and won't update. So, you have to tell the ComboBox that the array has changed. (Possibly by just assigning the Array back to the datasource) Does this help?

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