Use DynamicResource because the resource is defined in an external file and will not be resolved until runtime.

The ListView in WPF is so different to the Forms one. :~ Maybe the problem is how to iterate inside the ListView items. Here it is:

        GridView grid = source.View as GridView;
        if (grid == null)
        {
            //Sorry, only for GridView views
            return;
        }
        foreach (GridViewColumn col in grid.Columns)
        {
            //value of header is col.Header
        }
        foreach (Object item in source.Items)
        {
            PropertyInfo\[\] dataFields = item.GetType().GetProperties();
            int i = 0;
            foreach (GridViewColumn col in grid.Columns)
            {
                try
                {
                    //Get the name of field displayed on grid
                    string strPath = ((Binding)col.DisplayMemberBinding).Path.Path;
                    //Get the field value
                    object propValue = GetValue(item, source.Items, strPath);
                    //Value of cell is propValue
                }
                catch (Exception)
                {
                }
            }
        }

I think it will be easier to export (to excel, pdf or anything) from here.