Okay.
I saw where my error.
I have a grid with Livebindings.
In Livebindings Designer I see the grid with:
"Column [0]" connected with BindSource field "ID"
This field appears on the grid in position 1 (Column [1]) because I have a fixed column.
Why is the Grid.Columns.Name and Grid.Columns.Id are not set automatically when the bindings do?
When I change the column header in the designer that is changed is the header of the previous column :)