C# gGetAllEmployees（）@RamishaFarrukh可能您试图将GetAllEmployees（）的结果赋给不是System.Collection.Generic.List类型的变量，这就是错误发生的原因。请在调用GetAllEmployee

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g

GetAllEmployees（）

@RamishaFarrukh可能您试图将

GetAllEmployees（）

的结果赋给不是

System.Collection.Generic.List

类型的变量，这就是错误发生的原因。请在调用

GetAllEmployees（）

@RamishaFarrukh的地方共享您的代码。如果我看不到导致错误的代码，我将无能为力。

public class Employees
        {
            public String emp_id { get; set; }
            public String emp_name { get; set; }
            public String u_name { get; set; }
            public String pass { get; set; }
            public String mail { get; set; }
            public String address { get; set; }
            public String city { get; set; }
            public String dob { get; set; }
            public String cnic { get; set; }
            public String designation { get; set; }
            public String ph_no { get; set; }
        }
        public class @object
        {
            public static List<Employees> GetAllEmployees()
            {
                List<Employee> listemp = new List<Employee>();
                string cs = ConfigurationManager.ConnectionStrings[@"Data Source = localhost; Initial Catalog=fms; User=root; Pooling=false; Integrated Security = false"].ConnectionString;
                using (MySqlConnection con = new MySqlConnection(cs))
                {
                    MySqlCommand cmd = new MySqlCommand("Select * from emp", con);
                    con.Open();
                    MySqlDataReader dr = cmd.ExecuteReader();
                    while (dr.Read())
                    {
                        Employees em = new Employees();
                        em.emp_id = dr[0].ToString();
                        em.emp_name = dr[1].ToString();
                        em.u_name = dr[2].ToString();
                        em.pass = dr[3].ToString();
                        em.mail = dr[4].ToString();
                        em.address = dr[5].ToString();
                        em.city = dr[6].ToString();
                        em.dob = dr[7].ToString();
                        em.cnic = dr[8].ToString();
                        em.designation = dr[9].ToString();
                        em.ph_no = dr[10].ToString();
                    }
                    listemp.Add(em);
                }
            }

        }

  public static List<Employees> GetAllEmployees()
            {
                List<Employee> listemp = new List<Employee>();
                string cs = ConfigurationManager.ConnectionStrings[@"Data Source = localhost; Initial Catalog=fms; User=root; Pooling=false; Integrated Security = false"].ConnectionString;
                using (MySqlConnection con = new MySqlConnection(cs))
                {
                    MySqlCommand cmd = new MySqlCommand("Select * from emp", con);
                    con.Open();
                    MySqlDataReader dr = cmd.ExecuteReader();
                    while (dr.Read())
                    {
                        Employees em = new Employees();
                        em.emp_id = dr[0].ToString();
                        em.emp_name = dr[1].ToString();
                        em.u_name = dr[2].ToString();
                        em.pass = dr[3].ToString();
                        em.mail = dr[4].ToString();
                        em.address = dr[5].ToString();
                        em.city = dr[6].ToString();
                        em.dob = dr[7].ToString();
                        em.cnic = dr[8].ToString();
                        em.designation = dr[9].ToString();
                        em.ph_no = dr[10].ToString();
                        listemp.Add(em);
                    }

                }
               return listemp;
            }

public static List<Employees> GetAllEmployees()
{
     List<Employee> listemp = new List<Employee>();
     string cs = ConfigurationManager.ConnectionStrings[@"Data Source = localhost; Initial Catalog=fms; User=root; Pooling=false; Integrated Security = false"].ConnectionString;
     using (MySqlConnection con = new MySqlConnection(cs))
     {
         MySqlCommand cmd = new MySqlCommand("Select * from emp", con);
         con.Open();
         MySqlDataReader dr = cmd.ExecuteReader();
         while (dr.Read())
         {
             Employees em = new Employees();
             em.emp_id = dr[0].ToString();
             em.emp_name = dr[1].ToString();
             em.u_name = dr[2].ToString();
             em.pass = dr[3].ToString();
             em.mail = dr[4].ToString();
             em.address = dr[5].ToString();
             em.city = dr[6].ToString();
             em.dob = dr[7].ToString();
             em.cnic = dr[8].ToString();
             em.designation = dr[9].ToString();
             em.ph_no = dr[10].ToString();

             listemp.Add(em);
         }  
     }

    return listemp;
}

return listemp