How to access the "real" object behind cells in DataRow

I wanna associate a custom object to each cell in a DataTable's DataRow so that, on the events I get from the DataGridView, I can customize coloring and other behavior. So, when I add a new row, I do the following:

  DataRow oRow = dtItens.NewRow();
  oRow["CodFamilia"] = new ClsCelula(TipoCelula.tcMostrar, "", Color.White);
  oRow["Familia"] = new ClsCelula(TipoCelula.tcMostrar, "", Color.White);
  oRow["Item"] = new ClsCelula(TipoCelula.tcMostrar, "", Color.White);
  oRow["Descricao"] = new ClsCelula(TipoCelula.tcMostrar, "", Color.White);
  oRow["Referencia"] = new ClsCelula(TipoCelula.tcMostrar, "Saldo Inicial", Color.Aqua);
  dtItens.Rows.Add(oRow);

On the DataGridView's CellFormatting 开发者_Go百科event, I want to get my ClsCelula object to read it's properties, like below:

Object oCelula = dtItens.Rows[e.RowIndex][e.ColumnIndex];
if (oCelula != null)
{
  if (oCelula is ClsCelula)
  {
    ClsCelula oValorCelula = (ClsCelula)oCelula;
    e.CellStyle.BackColor = oValorCelula.Cor;
  }
}

However, this doesn't work, since probably the code is calling ToString() when I read the Row/Column index, so oCelula is always a System.String. Is there any way around this? How can I access the "real" object?

Since you are working from an object model, there seems to be no need to use DataTable here all - just set the DataSource to a List<T> (or better: BindingList<T>) and away you go! DataGridView is perfectly happy binding to objects, and the underlying object is just .DataBoundItem on each row.

Note - for two-way data-binding (i.e. If you want the grid to update when you edit an object directly through code) you might want to use BindingList<T> and implement INotifyPropertyChanged - but this isn't necessary if you just want to display a list and edit items via the grid.

Several options here:

• create DataTable from your own DataColumn objects, and specify the each column object type as ClsCelula. You'll have problems formatting it for the grid, in this case.
• create second invisible i.e. shadow column for each object created, then in it put the index of the object in some Dictionary<int, ClsCelula> or such, where index would be some kind of autoincrement number you will have to create and maintain.
• do what Marc says in the comment. That is the best thing you can do here.

I found such thing in my code: dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value. You might have to cast that to a particular type.

Old question, but anyway:

DataGridRecord obj = (DataGridRecord)Rows[args.RowIndex].DataBoundItem;