Stephen,

>Since you are probably the who is going to answer my question, I might as well ask you directly. I have a combo box on my form and I have some code in the SelectedIndexChanged event. In this code I do something with the SelectValue property of the combo box. I bind both the BindingValueSourceMember and BindingSourceValueMember to an integer key in the table. SelectedIndexChanged event got fired when the form initialize, at this point SelectedValue contains a DataRow (this first row of my bound table). After the form initialized, when I change the selection on the combo box, SelectedIndexChanged event got fired again with SelectedValue containing the correct integer key.

You made a good choice to check the type. However, proving as usual she has a very large brain <s>, Cathi's made a good suggestion...I'll simply move the setting of the BindingSource below the setting of the ValueMember and DisplayMember in mmBindingStrategy.BindData() so you won't have to perform the type check in future versions of MM .NET.

Regards,