public void ExportToExcel(string filterNombre, string filterApellidos, string filterTipoTitulacion,
                                  string filterTipoIdentificacion, string filterNumeroIdentificacion, string filterTipoTecnologia, string filterCentro,
                                  string filterEmail, string filterTelefono, string filterCentroEducativoId, string filterAnioRegresado, string filterNivelIdioma)
        {
            IDictionary <string, string> CustomFilters = new Dictionary <string, string> {
                { "Nombre", filterNombre },
                { "Apellidos", filterApellidos },
                { "TipoTitulacion", filterTipoTitulacion },
                { "TipoIdentificacion", filterTipoIdentificacion },
                { "NumeroIdentificacion", filterNumeroIdentificacion },
                { "TipoTecnologia", filterTipoTecnologia },
                { "CentroSearch", filterCentro },
                { "Email", filterEmail },
                { "Telefono", filterTelefono },
                { "CentroEducativoId", filterCentroEducativoId },
                { "AnioRegresado", filterAnioRegresado },
                { "NivelIdioma", filterNivelIdioma }
            };

            var request = new DataTableRequest
            {
                CustomFilters = CustomFilters
            };
            var response = _candidatoService.GetCandidatosExportToExcel(request);

            var grid = new System.Web.UI.WebControls.GridView
            {
                DataSource = response.CandidatoRowExportToExcelViewModel
            };

            grid.DataBind();
            Response.ClearContent();
            string filename = string.Format("Listado_de_Candidatos_{0}", DateTime.Now.ToShortDateString() + ".xls");

            Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", filename));
            Response.ContentType = "application/excel";
            StringWriter   sw  = new StringWriter();
            HtmlTextWriter htw = new HtmlTextWriter(sw);

            grid.RenderControl(htw);
            Response.Write(sw.ToString());
            Response.End();
        }