How can I return a model with an ActionLink? - asp.net-mvc-4

Question

I'm trying to get a model in a view and pass it to another controller but the model is null when passed to the other controller.
Controller - Here I send the model to render in my view:
[HttpPost]
public PartialViewResult Index(ReportesTabularesViewModel ModeloInput)
{
GetDatosTabularReportInput input = new GetDatosTabularReportInput { IdSensor = ModeloInput.sensor, FechaInicio = ModeloInput.FechaInicio, FechaFinal = ModeloInput.FechaFinal };
ReportesTabularesViewModel Modelo = new ReportesTabularesViewModel();
var Lista = new CaelusReporting.Datos.DatosApp().GetDatosTabularReport(input);
var s = Modelo.Sensores;
ViewBag.Sensores = s;
Modelo.Datos = Lista.GroupBy(x => x.Fecha).Select(y => new DatosViewModel
{
Fecha = y.Key,
EstacionSensorSensorNombre = y.First().EstacionSensorSensorNombre,
Datos = y
}
);
ViewBag.Modelo = ModeloInput;
return PartialView(Modelo);
}
View:
#model CaelusReporting.Web.Models.ViewModels.Datos.ReportesTabularesViewModel
#{
ViewData["temp"] = ViewBag.Modelo;
ViewBag.Title = Model.Datos.Select(y => y.EstacionSensorSensorNombre).FirstOrDefault();
List<CaelusReporting.Sensores.Dto.SensoresDto> sensores = ViewBag.Sensores;
}
<a class="menu-bar" data-toggle="collapse" href="#menu">
<span class="bars"></span>
</a>
<div class="collapse menu" id="menu">
<div class="list-inline">
#using (Ajax.BeginForm("Index", new AjaxOptions { UpdateTargetId = "Update", HttpMethod = "POST", InsertionMode = InsertionMode.Replace }))
{
<label>Sensor: </label>
<select data-placeholder="Escoja las estaciones" class="chosen-select-width" tabindex="8" name="sensor">
#foreach (var item in sensores.Where(x => x.estado == true))
{
<option value=#item.Id>#item.nombre</option>
}
</select>
<label>Fecha de Inicio: </label>
#Html.TextBoxFor(m => m.FechaInicio, null, new { type = "datetime-local", style = "max-width:235px; max-height:20px" })
<label>Fecha de Final: </label>
#Html.TextBoxFor(m => m.FechaFinal, null, new { type = "datetime-local", style = "max-width:235px; max-height:20px" })
<input id="Submit1" type="submit" value="Ver" />
}
Get Report in PDF
Get Report in XLS
Get Report in DOC
Get Report in CSV
</div>
</div>
Another controller - Here I try to import report that is in:
public ActionResult ExportReport(string DocType)
{
ReportesTabularesViewModel test = ViewData["temp"] as ReportesTabularesViewModel;
GetDatosTabularReportInput input = new GetDatosTabularReportInput { IdSensor = test.sensor, FechaInicio = test.FechaInicio, FechaFinal = test.FechaFinal };
var Lista = new CaelusReporting.Datos.DatosApp().GetDatosTabularReport(input);
ReportDocument rd = new ReportDocument();
rd.Load(Path.Combine(Server.MapPath("~/Reportess"), "Reporte.rpt"));
rd.SetDataSource(Lista);
Response.Buffer = false;
Response.ClearContent();
Response.ClearHeaders();
switch (DocType)
{
case "PDF":
rd.Load(Path.Combine(Server.MapPath("~/Reportess"), "Reporte.rpt"));
try
{
Stream stream = rd.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat);
stream.Seek(0, SeekOrigin.Begin);
return File(stream, "application/pdf", "ReportePDF.pdf");
}
catch (Exception ex)
{
throw;
}
case "DOC":
rd.Load(Path.Combine(Server.MapPath("~/Reportess"), "Reporte.rpt"));
try
{
Stream stream = rd.ExportToStream(CrystalDecisions.Shared.ExportFormatType.WordForWindows);
stream.Seek(0, SeekOrigin.Begin);
return File(stream, "application/msword", "ReporteDOC.doc");
}
catch (Exception ex)
{
throw;
}
case "XLS":
rd.Load(Path.Combine(Server.MapPath("~/Reportess"), "Reporte.rpt"));
try
{
Stream stream = rd.ExportToStream(CrystalDecisions.Shared.ExportFormatType.Excel);
stream.Seek(0, SeekOrigin.Begin);
return File(stream, "application/vnd.ms-excel", "ReporteDOC.xls");
}
catch (Exception ex)
{
throw;
}
case "CSV" :
rd.Load(Path.Combine(Server.MapPath("~/Reportess"), ""));
try
{
Stream stream = rd.ExportToStream(CrystalDecisions.Shared.ExportFormatType.CharacterSeparatedValues);
stream.Seek(0, SeekOrigin.Begin);
return File(stream, "text/csv", "ReporteCSV.csv");
}
catch (Exception ex)
{
throw;
}
default:
return null;
}
}

Answer 1

You can not pass ViewData between requests (actions). You need to serialize data somehow, in querysting for example. You can use RouteValueDictionary to do this.
you need to create Model for action ActionResult ExportReport(string DocType) like this:
public class ExportReportModel
{
public string DocType {get; set;}
// all fields which you required from ReportesTabularesViewModel
}
then your action will looks like this ActionResult ExportReport(ExportReportModel model) and you can render such a links:
Get Report in PDF
you can also use anonymous objects, but in case when you have more than 3 parameters I will organize those in some kind of structure.