How to delete a record in MVC 5 web application using repository pattern and have a business logic layer

//In your Business Logic layer write this code following code

//Getting a record by Id first
public PatientDataModel GetById(string id)
{

using (var patientRep = new PatientRepository())
{


PatientDataModel patient = patientRep.GetById(id);
var pat = new PatientViewModel();

if (patient != null)
{
pat.IdNo = patient.IdNo;
pat.FirstName = patient.FirstName;
pat.LastName = patient.LastName;
pat.Gender = patient.Gender;
pat.Email = patient.Email;
pat.CellPhoneNo = patient.CellPhoneNo;
pat.Address = patient.Address;
}
return patient;
}
}

public void Delete(PatientViewModel model)
        {
            using (var patientRep = new PatientRepository())
            {
                var patient = new PatientDataModel();
                patient = patientRep.GetById(model.IdNo);
                if (patient != null)
                {

                    patientRep.Delete(patient);

                }
            }

        }

//Then in your controller write this code

[HttpGet]
public ActionResult Delete(string id)
{
var patientb = new PatientBusiness().GetById((id));
return View(patientb);
}
[HttpPost]
public ActionResult Delete(PatientViewModel model)
{
var patientb = new PatientBusiness();
try
{
if (ModelState.IsValid)
{
patientb.Delete(model);

return RedirectToAction("Index");
}
}
catch (Exception)
{

ModelState.AddModelError("", "Unable to Edit your profile.Try again, and if the problem persists see your system administrator.");
}
return RedirectToAction("Index");
}

//Then create a view

@model DutClinicData.PatientDataModel

@{
ViewBag.Title = "Delete";
Layout = "~/Views/Shared/_Layout.cshtml";
}

Delete

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//Anyone can improve this answer