How to work with Datagridviewcheckboxcolumn in c#?

Question

I’m having some difficulty working with the data grid view selection field, I tried to do it this way:

public void Atualizar()
 {
     Stock obj = new Stock();

     for (int A = 0; A < dgv_Entrada.RowCount; A++)
     {

         int ID_Cod = Convert.ToInt32(dgv_Entrada[1, A].Value);

         obj.id_entrada = ID_Cod;
         obj.estado = cb_Estado.Text;
        }

       obj.Actualizar();

  }

When running, when selecting but from a row, it only updates the data of the last selected row.

I’m not getting a check of the selected lines.

Answer 1

The code is wrong.

You’re iterating through all the lines of your datagridview and after you’ve gone through all and arrived at the last you’re called the method obj.Actualizar; that is, it will only update the last because it is she who was saved in the variable.

The correct thing is for you to call this method to each line, ie put inside the loop for:

public void Atualizar()
{
   Stock obj = new Stock();

   for (int A = 0; A < dgv_Entrada.RowCount; A++)
   {
      // Checar se o valor é falso, se for, pula para a próxima linha.
      if(Convert.ToBoolean(dgv_Entrada[/*Nome ou indice coluna checkbox*/, A].Value) == false)
      {
         continue;
      }

      int ID_Cod = Convert.ToInt32(dgv_Entrada[1, A].Value);

      obj.id_entrada = ID_Cod;
      obj.estado = cb_Estado.Text;

      obj.Actualizar();
   }
}