To achieve your requirement, you can use RadGridView control with two items in its ItemsSource. The columns are automatically generated by default, so if you replace the ItemsSource with a data set containing different fields, the columns will be generated accordingly. Also, you can customize the cells so that the first row has comboboxes and the second one simple text field, by using the CellTemplateSelector property of the columns. You can get the automatically generated columns in order to set their selector via the AutoGeneratingColumns event of RadGridView. Here are some resources that you can check:
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