Gridviewcheckboxcolumn generating a blank column

Question

I’m creating a form like Radcontrols Winforms Application to make a simple registration of people .

In this form I am using the Telerik Rad Controls

To use the checkbox for each item in the list I used the Gridviewcheckboxcolumn

This is my code for the shipment from Grid

 private void Carrega_Lista()
        {
            GridPessoas.DataSource = Negocio.Pessoa.ConsultarPessoa();
            GridPessoas.EnableFiltering = true;
            GridPessoas.MasterTemplate.ShowFilteringRow = true;
            GridPessoas.AddSelectCheckBoxColumn();
        }

But when adding the GridPessoas.AddSelectCheckBoxColumn();

A blank column is being generated, see the figure below :

Does anyone know how I can solve this ?

Answer 1

Troubleshooting and very simple just enter the command in the builder and not in the Carrega_Lista();

public Principal()
{
  InitializeComponent();
  GridPessoas.AddSelectCheckBoxColumn();
}