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    copied!<p>Your method should return <code>List&lt;SelectListItem&gt;</code> instead of <code>List&lt;SelectList&gt;</code>:</p> <pre><code>public List&lt;SelectListItem&gt; SelectDoctoronEdit(int id) { Gema_Doctor[] doctorList; doctorList = gema_Doctor.GetDoctor().ToArray(); List&lt;Gema_Doctor&gt; listDoctor = new List&lt;Gema_Doctor&gt;(doctorList); List&lt;SelectListItem&gt; dropItems = new List&lt;SelectListItem&gt;(); RDM_Patient patientsSelect = rdm_Patient.GetPatient().First(c =&gt; c.PatientID == id); dropItems.Add(new SelectListItem { Text = "--Select--", Value = "" }); foreach (Gema_Doctor doctorValues in listDoctor) { RDM_Patient patients = rdm_Patient.GetPatient().First(c =&gt; c.PatientID == id); if (patients.DoctorID == doctorValues.Dr_Id) { dropItems.Add(new SelectListItem { Text = doctorValues.Dr_Name, Value = doctorValues.Dr_Id.ToString(), Selected = true }); } else { dropItems.Add(new SelectListItem { Text = doctorValues.Dr_Name, Value = doctorValues.Dr_Id.ToString(), Selected = false }); } } return new SelectList(dropItems, "Value", "Text", patientsSelect.DoctorID); } </code></pre> <p>or if you prefer a <code>SelectList</code> directly:</p> <pre><code>public SelectList SelectDoctoronEdit(int id) { Gema_Doctor[] doctorList; doctorList = gema_Doctor.GetDoctor().ToArray(); List&lt;Gema_Doctor&gt; listDoctor = new List&lt;Gema_Doctor&gt;(doctorList); List&lt;SelectListItem&gt; dropItems = new List&lt;SelectListItem&gt;(); RDM_Patient patientsSelect = rdm_Patient.GetPatient().First(c =&gt; c.PatientID == id); dropItems.Add(new SelectListItem { Text = "--Select--", Value = "" }); foreach (Gema_Doctor doctorValues in listDoctor) { RDM_Patient patients = rdm_Patient.GetPatient().First(c =&gt; c.PatientID == id); if (patients.DoctorID == doctorValues.Dr_Id) { dropItems.Add(new SelectListItem { Text = doctorValues.Dr_Name, Value = doctorValues.Dr_Id.ToString(), Selected = true }); } else { dropItems.Add(new SelectListItem { Text = doctorValues.Dr_Name, Value = doctorValues.Dr_Id.ToString(), Selected = false }); } } return dropItems; } </code></pre>
 

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