private void button1_Click(object sender, EventArgs e)
 {
     Funcoes function =new Funcoes();
     List<remag_salario_minimo> salario = new List<remag_salario_minimo>();
     if (this.radioButtonTodos.Checked)
     {
         salario = function.GetSalarioMinimo();
     }
     else
     {
         salario = function.GetSalarioMinimo(Convert.ToDateTime(this.TextBoxDataI.Text), Convert.ToDateTime(this.TextBoxDataF.Text));
     }
     RptSalarioMinimo report = new RptSalarioMinimo(salario);
     report.ShowPreview();
 }