Hi,
I am trying to created a gridview which has multiple merged headers as attached in the image. I am trying to achieve this using Interaction.Behaviour under
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
xmlns:ColumnHeaderGroups="clr-namespace:ColumnHeaderGroups"
Now the issue is, i have done only with 2 levels of header. in this i am unable to bring the Rating Guidelines (merged header) below the normal header columns.
Please help me in achieving the whole header.
Please advise.