We use long time RadGridView with ItemsSource as System.Data.DataTable.DefaultView
In newest update 2021.2.615 column names with Case sensitive difference (orig. [reg_dat]) make Binding error
<telerik:GridViewDataColumn Header="Reg.date" DataMemberBinding="{Binding [Reg_dat]}" />
Cannot obtain IDataErrorInfo.Error[[Reg_dat]] from source of type System.Data.DataRowView - System.ArgumentException 'Column '[Reg_dat]' does not belong to table .' BindingExpression:Path=[Reg_dat]; DataItem='DataRowView' (HashCode=51788984); target element is 'GridViewCell' (Name=''); target property is 'ValueChangedListener' (type 'Object')
It is Telerik mistake?