当我更新时，更新将适用于所有建议，而不仅仅是一个建议，我怀疑只有第一个建议会传递给dal。例如，如果有2条建议（“ suggestionid1”和“ suggestionid2”），则当我将建议ID 1从y更新为n时，建议id 2也将从y更新为n。
@model WEB_P02_Team3.Models.Suggestion
@{
ViewData["Title"] = "AcknowledgeSuggestion";
Layout = "~/Views/Shared/_StudentLayout.cshtml";
}
<h2>AcknowledgeSuggestion</h2>
<hr />
@if ((ViewData["StudentSuggestion"] as List<Suggestion>).Count > 0)
{
<tbody>
<form asp-action="AcknowledgeSuggestion" , asp-controller="Student">
<fieldset class="FormContent">
<div class="form-group row">
<div>
@*<input asp-for="SuggestionID" type="hidden" />
<input type="hidden" asp-for="SuggestionID" class="form-control" />*@
<input type="hidden" asp-for="SuggestionID" />
<input type="hidden" asp-for="StudentID" />
<input type="hidden" asp-for="LecturerID" />
<label asp-for="Status"
class="col-sm-3 col-form-label"></label>
<div class="col-sm-9 col-md-5">
@foreach (var suggestion in ViewData["AcknowledgeSuggestion"]
as List<string>)
{
<label>
<input asp-for="Status" type="radio" value="@suggestion" />
@suggestion
</label>
}
</div>
</div>
<div class="form-group row">
<div class="col-sm-9 offset-sm-3">
<input type="submit" value="Save"
class="btn btn-primary" />
</div>
</div>
</form>
</tbody>
}
else
{
<span style="color:red"> No suggestion to acknowledge!</span>
}
<a asp-action="Index">Back to List</a>
@model IEnumerable<WEB_P02_Team3.Models.Suggestion>
@{
ViewData["Title"] = "ViewSuggestion";
Layout = "~/Views/Shared/_StaffLayout.cshtml";
}
<h2>ViewSuggestion</h2>
<h4>Suggestion</h4>
<hr />
@if (Model.ToList().Count > 0)
{
<tbody>
<table style="width:100%; border: 1px solid black;">
<tr>
<th>@Html.DisplayNameFor(model => model.SuggestionID)</th>
<th>@Html.DisplayNameFor(model => model.LecturerID)</th>
<th>@Html.DisplayNameFor(model => model.StudentID)</th>
<th>@Html.DisplayNameFor(model => model.Description)</th>
<th>@Html.DisplayNameFor(model => model.Status)</th>
<th>@Html.DisplayNameFor(model => model.DateCreated)</th>
</tr>
@foreach (var item in Model)
{
<tr>
<td>@item.SuggestionID.ToString()</td>
<td>@item.LecturerID.ToString()</td>
<td>@item.StudentID.ToString()</td>
<td>@item.Description.ToString()</td>
<td>@item.Status.ToString()</td>
<td>@item.DateCreated.ToString()</td>
</tr>
}
</table>
</tbody>
}
else
{
<span style="color:red"> No record found!</span>
}
//GET:Student/AchknowledgeSuggestion
public ActionResult AcknowledgeSuggestion(int? id)
{
if ((HttpContext.Session.GetString("Role") == null) ||
(HttpContext.Session.GetString("Role") != "Student"))
{
//Return to listing page, not allowed to edit
return RedirectToAction("Index", "Welcome");
}
if (id == null) //Query string parameter not provided
{
id = (HttpContext.Session.GetInt32("StudentID"));
}
List<Suggestion> studentSuggestionList = suggestionContext.StudentSuggestionList(id.Value);
//List<Suggestion> suggestionStatusList = new List<Suggestion>();
List<string> statusSuggestionList = new List<string>();
statusSuggestionList.Add("Y");
statusSuggestionList.Add("N");
//List<Suggestion> suggestionList = suggestionContext.GetAllSuggestion();
ViewData["AcknowledgeSuggestion"] = statusSuggestionList;
ViewData["StudentSuggestion"] = studentSuggestionList;
/*if (studentSuggestionList.Count == 0)
{
return RedirectToAction("ViewSuggestion");
}*/
Suggestion suggestion = suggestionContext.GetStudentSuggestionDetails(id.Value);
//suggestion.StudentID = int.Parse(HttpContext.Session.GetString("StudentID"));
return View(suggestion);
}
//POST:Student/AchknowledgeSuggestion
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult AcknowledgeSuggestion(Suggestion suggestion)
{
if (ModelState.IsValid)
{
//Update staff record to database
suggestionContext.Achknowledge(suggestion);
return RedirectToAction("ViewSuggestion");
}
//Input validation fails, return to the view
//to display error message
return View(suggestion);
}
public List<Suggestion> StudentSuggestionList(int studentID)
{
SqlCommand cmd = new SqlCommand(
"SELECT * FROM Suggestion WHERE StudentID=@selectedStudentID", conn);
//Instantiate a DataAdapter object and pass the
//SqlCommand object created as parameter.
cmd.Parameters.AddWithValue("@selectedStudentID", studentID);
SqlDataAdapter da = new SqlDataAdapter(cmd);
//Create a DataSet object to contain records get from database
DataSet result = new DataSet();
//Open a database connection
conn.Open();
//Use DataAdapter, which execute the SELECT SQL through its
//SqlCommand object to fetch data to a table "StudentDetails"
//in DataSet "result".
da.Fill(result, "SuggestionDetails");
//Close the database connection
conn.Close();
//Transferring rows of data in DataSet’s table to “Student” objects
List<Suggestion> StudentSuggestionList = new List<Suggestion>();
if (result.Tables["SuggestionDetails"].Rows.Count > 0)
{
// Fill Skill Set Object with values from the DataSet
DataTable table = result.Tables["SuggestionDetails"];
// No errors occurs
for (int i = 0; i < table.Rows.Count; i++)
{
Suggestion suggestion = new Suggestion();
suggestion.StudentID = studentID;
if (!DBNull.Value.Equals(table.Rows[i]["SuggestionID"]))
suggestion.SuggestionID = Convert.ToInt32(table.Rows[i]["SuggestionID"]);
if (!DBNull.Value.Equals(table.Rows[i]["LecturerID"]))
suggestion.LecturerID = Convert.ToInt32(table.Rows[i]["LecturerID"]);
if (!DBNull.Value.Equals(table.Rows[i]["StudentID"]))
suggestion.StudentID = Convert.ToInt32(table.Rows[i]["StudentID"]);
if (!DBNull.Value.Equals(table.Rows[i]["Description"]))
suggestion.Description = table.Rows[i]["Description"].ToString();
if (!DBNull.Value.Equals(table.Rows[i]["Status"]))
suggestion.Status = table.Rows[i]["Status"].ToString();
if (!DBNull.Value.Equals(table.Rows[i]["DateCreated"]))
suggestion.DateCreated = Convert.ToDateTime(table.Rows[i]["DateCreated"]);
StudentSuggestionList.Add(suggestion);
}
}
//else
//{
// return null; // There is no existing record found in the database
//}
return StudentSuggestionList;
}
public int Achknowledge(Suggestion suggestion)
{
//Instantiate a SqlCommand object, supply it with SQL statement UPDATE
//and the connection object for connecting to the database.
SqlCommand cmd = new SqlCommand
("UPDATE Suggestion SET Status=@status WHERE StudentID = @selectedStudentID ", conn);
//Define the parameters used in SQL statement, value for each parameter
//is retrieved from the respective property of “staff” object.
cmd.Parameters.AddWithValue("@status", suggestion.Status);
//cmd.Parameters.AddWithValue("@studentID", suggestion.StudentID);
cmd.Parameters.AddWithValue("@selectedStudentID", suggestion.StudentID);
//cmd.Parameters.AddWithValue("@selectedSuggestionID", suggestion.SuggestionID);
//Open a database connection.
conn.Open();
//ExecuteNonQuery is used for UPDATE and DELETE
int update = cmd.ExecuteNonQuery();
//Close the database connection.
conn.Close();
return update;
}
public Suggestion GetStudentSuggestionDetails(int studentID)
{
SqlCommand cmd = new SqlCommand(
"SELECT * FROM Suggestion WHERE StudentID=@selectedStudentID", conn);
//Instantiate a DataAdapter object and pass the
//SqlCommand object created as parameter.
cmd.Parameters.AddWithValue("@selectedStudentID", studentID);
SqlDataAdapter da = new SqlDataAdapter(cmd);
//Create a DataSet object to contain records get from database
DataSet result = new DataSet();
//Open a database connection
conn.Open();
//Use DataAdapter, which execute the SELECT SQL through its
//SqlCommand object to fetch data to a table "StudentDetails"
//in DataSet "result".
da.Fill(result, "SuggestionDetails");
//Close the database connection
conn.Close();
//Transferring rows of data in DataSet’s table to “Student” objects
Suggestion suggestion = new Suggestion();
if (result.Tables["SuggestionDetails"].Rows.Count > 0)
{
suggestion.StudentID = studentID;
// Fill Skill Set Object with values from the DataSet
DataTable table = result.Tables["SuggestionDetails"];
if (!DBNull.Value.Equals(table.Rows[0]["SuggestionID"]))
suggestion.SuggestionID = Convert.ToInt32(table.Rows[0]["SuggestionID"]);
if (!DBNull.Value.Equals(table.Rows[0]["LecturerID"]))
suggestion.LecturerID = Convert.ToInt32(table.Rows[0]["LecturerID"]);
if (!DBNull.Value.Equals(table.Rows[0]["StudentID"]))
suggestion.StudentID = Convert.ToInt32(table.Rows[0]["StudentID"]);
if (!DBNull.Value.Equals(table.Rows[0]["Description"]))
suggestion.Description = table.Rows[0]["Description"].ToString();
if (!DBNull.Value.Equals(table.Rows[0]["Status"]))
suggestion.Status = table.Rows[0]["Status"].ToString();
if (!DBNull.Value.Equals(table.Rows[0]["DateCreated"]))
suggestion.DateCreated = Convert.ToDateTime(table.Rows[0]["DateCreated"]);
return suggestion; // No errors occurs
}
else
{
return null; // There is no existing record found in the database
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.ComponentModel.DataAnnotations;
namespace WEB_P02_Team3.Models
{
public class Suggestion
{
[Display(Name = "Suggestion ID")]
public int SuggestionID { get; set; }
[Display(Name = "Lecturer ID")]
public int LecturerID { get; set; }
[Display(Name = "Student ID")]
public int StudentID { get; set; }
[StringLength (3000, ErrorMessage ="Maximum 2000 characters" )]
public string Description { get; set; }
public string Status { get; set; }
[DataType(DataType.DateTime)]
public DateTime DateCreated { get; set; }
}
}