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Changing ultracombo's datasource causes crash
posted

Anyone know why i get the following error when I try to programmatically (vb.net) change the datasource of my ultrawingrid.ultracombo?
Error: "Object reference not set to an instance of an object."

I'm using a custom class as my datasource and I am getting the class from another combobox's active row.  This is a strange setup, the reason behind this is that i want to change the datasource of comboB depending on what the user selects in ComboA.  It works for one change, but when I try to change it to something else I get the above error.


p.s. the object in the ComboA is set to a data type of object because since the class changes, the type will change too, is this part of the problem? is there a way to completely reset the  infragistics combobox or something?

any help will be greatly appreciated!


Infragistics V5.1.01
vb.net 2003 v 7.1.6030
.NET framework 1.1.4322 SP1