I would like to debug in to WPF source code to find why the MultiColumnCombobox SelectedIndex becomes -1. The binding value is 0 and for the control is becomes -1.
I would like to debug in to WPF source code to find why the MultiColumnCombobox SelectedIndex becomes -1. The binding value is 0 and for the control is becomes -1.
In parallel, maybe you can also give the code details in some programming forum. Perhaps the issue can be solved by other people too without WPF source.
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