private void btnEmpleado_Click(object sender, EventArgs e)
{
bindingSource1.Clear();
reportViewer1.LocalReport.DataSources.Clear();
reportViewer1.LocalReport.ReportEmbeddedResource = "SisVentaPresentacion.Informes.RptObtenerVentaEmplea.rdlc";
bindingSource1.DataSource = ope.ObtenerVentaEmpleado((int)cboEmpleado.SelectedValue);
reportViewer1.LocalReport.DataSources.Add(new ReportDataSource("DataSet1", bindingSource1));
this.reportViewer1.RefreshReport();
}