templateService.Parse not able to parese Tuple used in view(MVC) - asp.net-mvc

Question

I am trying to parse a .cshtml with tuple and tuple used for acces two models in the view same time, but it is not working throwing error, but if I am using only one model than same this is wotking.
Here is my code:
Controller:
var deviceModel = new DevicesInformationDataViewModel { };
var eventModel = new EventsInformationDataViewModel{ };
var templateFolderPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "Views\\EmailTemplates");
var emailTemplatePath = Path.Combine(templateFolderPath, "EmailTemplates.cshtml");
var templateService = new TemplateService();
var emailHtmlBody = "";
string email = data[1];
ViewBag.info = data[0];
if (data[0] == "DeviceInfo")
{
deviceModel.Address = data[2];
deviceModel.Description = data[3];
deviceModel.eDescription = data[4];
deviceModel.Fault = data[5];
deviceModel.Type = data[6];
deviceModel.TypeCode = Int32.Parse(data[7]);
deviceModel.DriftCompensation = Int32.Parse(data[8]);
deviceModel.AlarmSensitivity = data[9];
deviceModel.Status = data[10];
emailHtmlBody = templateService.Parse(System.IO.File.ReadAllText(emailTemplatePath), deviceModel, ViewBag.info, null);
}
View:
If using like this, not working:
#model Tuple<DevicesInformationDataViewModel,EventsInformationDataViewModel>
but if using like this, it is working:
#model DevicesInformationDataViewModel
Can any body tell me what I am doing wrong and please tell me how can I resolve
this issue?