数据表未显示在 Razor 页面中

Question

我的 Razor 页面遇到问题，数据表未显示任何数据。有人可以帮我排除故障并解决这个问题吗？

带有标题的表格会显示，但实际数据不会输出。

尝试过： 命名空间 LibraryApp.Pages { 公共类管理：PageModel {

    public List<Signup_data> listUsers = new List<Signup_data>();
   public void OnGet()
   { 
        try
        {
            string connectionString = "Data Source=.\\sqlexpress;Initial Catalog=Library;Integrated Security=True;Trust Server Certificate=True";
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                connection.Open();
                string sql = "SELECT * FROM login";
                using (SqlCommand command = new SqlCommand(sql, connection))
                {
                    using (SqlDataReader reader = command.ExecuteReader())
                    {
                        while (reader.Read())
                        {
                            Signup_data data = new Signup_data();
                            data.id = reader.GetInt32(0);
                            data.firstname = reader.GetString(1);
                            data.lastname = reader.GetString(2);
                            data.email = reader.GetString(3);
                            data.password = reader.GetString(4);

                            listUsers.Add(data);
                        }
                    }
                }
            }
        }
        catch (Exception ex)
        {

        }
       
   }
}

public class Signup_data
{
    public int id;
    public string firstname;
    public string lastname;
    public string email;
    public string password; 
}

}

<!-- DATABASE connection -->
<h2>List of Users</h2>
<a class='btn btn-primary btn-sm' href='/Data/Create'>New user</a>
<table class="table">
    <thead>
        <tr>
            <th>ID</th>
            <th>First Name</th>
            <th>Last Name</th>
            <th>Email</th>
            <th>Password</th>
        </tr>
    </thead>

    <tbody>
@foreach (var data in Model.listUsers)  
{
    <tr>
        <td>@data.id</td>
        <td>@data.firstname</td>
        <td>@data.lastname</td>
        <td>@data.email</td>
        <td>@data.password</td>

        <!-- Buttons-->
        <td>
            <a class="btn btn-primary btn-sm" href="/Data/[email protected]">Edit</a>
            <a class="btn btn-danger btn-sm" href="/Data/[email protected]">Delete</a>
        </td>
    </tr>
}
    </tbody>
    </table>

Answer 1

删除

Trust Server Certificate=True

中的

connectionString

：

string connectionString = "Data Source=.\\sqlexpress;Initial Catalog=Library;Integrated Security=True;";