Command event to insert file

Hello community

I'm facing an issue creating the command method to insert data in grid. 

I have the following Select method in BLL.

public List GetAllFiles(int IDRecursoHumano = 0)
{
try
{
using (GestaoProjectosEntities lt = new GestaoProjectosEntities())
{
var query = lt.ListagemTimesheets.Include("RecursoHumano").Include("EstadoTimesheet").AsQueryable();
if (IDRecursoHumano > 0)
query = query.Where(a => a.IDRecursoHumano == IDRecursoHumano);
return query.ToList();}
}
catch (Exception ex)
{
//
log.Error("BLL => GetAllFiles:" + ex.Message);return new List();
}
}

And i used the following struture for the Edit operation. I was trying to use a similar one to insert operations, but i am not finding the way to properly do it.

if (e.CommandName == "EditItem")
{
    try
    {
        divUC.Visible = true; //divUC
        e.Canceled = true;

        int idtimesheet = int.Parse(e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex]["ID"].ToString());
        ListagemTimesheet timesheet = listagembll.GetFileByID(idtimesheet);
        EditTimesheet.Objecto = timesheet;
        EditTimesheet.DataBind();
    }
    catch (System.Exception)
    {
    }
}

if (e.CommandName == "InsertItem")
{
    List idtimesheet = new List();

    try
    {
        divUC.Visible = true; //divUC
        e.Canceled = true;

        //int idtimesheet = int.Parse(e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex]["ID"].ToString());

        ListagemTimesheet timesheet = listagembll.GetFileByID(idtimesheet);
        EditTimesheet.Objecto = timesheet;
        EditTimesheet.DataBind();
    }
}

Any ideas?