需要帮助以获取搜索栏以通过表格视图进行搜索

Question

我试图获取一个搜索栏来搜索表视图的内容，但我无法弄清楚为什么会出现此错误。错误是：“由于未捕获的异常'NSInternalInconsistencyException'而终止应用程序，原因：'无法使标识符为Cell的单元出队-必须为该标识符注册一个笔尖或一个类，或者在情节提要中连接原型单元”。问题是我确实有一个原型单元，并且表格视图可以使用该单元。这仅在我单击搜索栏时发生。

func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String)
    {
        print("at the beginning of search bar")
        if searchBar.text == nil || searchBar.text == ""
        {
            searchIsActive = false
            view.endEditing(true)
            tableView.reloadData()
        }
        else
        {
        searchResuls = names.filter({$0.lowercased().prefix(searchText.count) == searchText.lowercased()})
        searchIsActive = true
            tableView.reloadData()

        }
    }
func searchBarCancelButtonClicked(_ searchBar: UISearchBar)
    {
        searchIsActive = false
        searchBar.text = nil
        tableView.reloadData()
        searchBar.resignFirstResponder()
    }

var names = [String]()

    @IBOutlet weak var searchBar: UISearchBar!

    @IBOutlet weak var tableView: UITableView!

    var searchIsActive = false
    var searchResuls = [String]()

这是在我的表格视图功能中

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
    {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! TableViewCell


        if searchIsActive
        {
            cell.firstNameLabel.text = searchResuls[indexPath.row]
//            cell.firstNameLabel.text = searchResuls[indexPath.row].firstName
//            names.append(studentInfo[indexPath.row].firstName!)
//            cell.lastNameLabel.text = searchResuls[indexPath.row].lastName
//            cell.CourseLabel.text = searchResuls[indexPath.row].course
//            cell.TermYearLabel.text = searchResuls[indexPath.row].term! + ", " + String(studentInfo[indexPath.row].year!)
//
//            //grabbing the image
//            let url = URL(string: searchResuls[indexPath.row].imageURL!)
//            let data = try? Data(contentsOf: url!)
//            cell.ImageView.image = UIImage(data: data!)
        }
        else
        {
            cell.firstNameLabel.text = studentInfo[indexPath.row].firstName
            names.append(studentInfo[indexPath.row].firstName!)
            cell.lastNameLabel.text = studentInfo[indexPath.row].lastName
            cell.CourseLabel.text = studentInfo[indexPath.row].course
            cell.TermYearLabel.text = studentInfo[indexPath.row].term! + ", " + String(studentInfo[indexPath.row].year!)

            //grabbing the image
            let url = URL(string: studentInfo[indexPath.row].imageURL!)
            let data = try? Data(contentsOf: url!)
            cell.ImageView.image = UIImage(data: data!)
        }
        print("these are the names: ", names)
        return cell
    }

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
    {
        if searchIsActive
        {
            return searchResuls.count
        }
        else
        {
            return studentInfo.count
        }
    }