InvalidProgramException：无效的 IL 代码（postgres db 和 unity）

Question

早上好， 我试图用我的统一应用程序读取 postgres 数据库。但是当用户尝试输入他的登录名时，会出现以下错误；

InvalidProgramException：IL 代码无效 Npgsql.NpgsqlCommand:get_Parameters(): IL_0000: ret

（包装器远程调用与检查） Npgsql.NpgsqlCommand:get_Parameters () PersonManager.SelectPerson （System.String 角色，System.String 电子邮件）（在 资产/脚本/PersonManager.cs:23) Customer.SignIn (UnityEngine.GameObject obj) (在 Assets/Scripts/Customer.cs:25) UnityEngine.Events.InvokableCall1[UnityEngine.GameObject].Invoke (System.Object[] args) (at /Users/builduser/buildslave/unity/build/Runtime/Export/UnityEvent.cs:188) UnityEngine.Events.CachedInvokableCall1[UnityEngine.GameObject].Invoke （System.Object[] 参数）（在 /Users/builduser/buildslave/unity/build/Runtime/Export/UnityEvent.cs:306） UnityEngine.Events.InvokableCallList.Invoke (System.Object[] 参数）（在 /Users/builduser/buildslave/unity/build/Runtime/Export/UnityEvent.cs:634） UnityEngine.Events.UnityEventBase.Invoke（System.Object[] 参数） （在 /Users/builduser/buildslave/unity/build/Runtime/Export/UnityEvent.cs:769) UnityEngine.Events.UnityEvent.Invoke () (在 /Users/builduser/buildslave/unity/build/Runtime/Export/UnityEvent_0.cs:53) UnityEngine.UI.Button.Press () (在 /Users/builduser/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:35) UnityEngine.UI.Button.OnPointerClick （UnityEngine.EventSystems.PointerEventData eventData）（在 /Users/builduser/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/UI/Core/Button.cs:44) UnityEngine.EventSystems.ExecuteEvents.Execute (IPointerClickHandler 处理程序，UnityEngine.EventSystems.BaseEventData eventData）（在 /Users/builduser/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:52) UnityEngine.EventSystems.ExecuteEvents.Execute[IPointerClickHandler] （UnityEngine.GameObject 目标，UnityEngine.EventSystems.BaseEventData eventData，UnityEngine.EventSystems.EventFunction`1 函子）（在 /Users/builduser/buildslave/unity/build/Extensions/guisystem/UnityEngine.UI/EventSystem/ExecuteEvents.cs:269） UnityEngine.EventSystems.EventSystem:Update()

我不认为问题出在我的 c# 代码上，因为当我从终端尝试不同的方法时，它可以工作！！意味着代码没有统一就可以正常工作。所以当我按下登录按钮时，它会调用以下方法：

public void SignIn(GameObject obj)
    {
        company = new Company ("localhost", "kitbox", "bluebeel");
        Person person = company.PersonManager.SelectPerson("customer", obj.GetComponent<InputField> ().text);
        if (person != null)
        {
            StateManager.Instance.person = person;
            ScenesManager.OnChanges ("Intro");
        }
        else
        {
            GameObject.Find ("SignInEmailErrorPanel").GetComponent<Image> ().color = new Color(227, 78, 103, 1);
        }
    }

如你所见，它只调用另一个类的一个方法，所以这是代码；

public class Company{

    [...]

    private NpgsqlConnection Init(string host, string db, string user)
    {
        string connectionString;
        connectionString = "Host=" + host + ";" + "Database=" +
            db + ";" + "Username=" + user + ";";

        NpgsqlConnection conn = new NpgsqlConnection (connectionString);

        return conn;
    }

    public Company(string host, string db, string user)
    {
        try
        {
            this.connection = Init(host, db, user);
        }
        catch (Exception e)
        {
            throw e;
        }
        this.personManager = new PersonManager(this.connection);
    }
[...]
}

public class PersonManager {

    private NpgsqlConnection connection;
    private NpgsqlCommand command;

        public PersonManager(NpgsqlConnection conn)
        {
            this.connection = conn;
        }

        public Person SelectPerson(string role, string email)
        {
            Person person = null;
            string select = SelectRole(role);
            this.connection.Open();
            this.command = new NpgsqlCommand(select, this.connection);
            this.command.Parameters.Add(new NpgsqlParameter("email", NpgsqlDbType.Varchar)).Value = email;

            NpgsqlDataReader reader = this.command.ExecuteReader();
            while (reader.Read())
            {
                person = new Person(role, (string)reader["name"], (string)reader["address"], (string)reader["phone"], (string)reader["email"], (string)reader["password"]);
                person.Id = (int)reader["id"];
            }
            reader.Close();
            this.connection.Close();

            return person;

        }
}

在项目文件夹中，我在 Assets 中有一个“插件”文件夹，其中包含 Unity 在开始时加载的 Npgsql.dll 和 System.Data.dll。

所以我被卡住了，不知道问题出在哪里。提前感谢您的未来回答

Answer 1

我觉得你最好自己在Unity3D下编译Npgsql。 Npgsql 是open-sourced。你得到的Npgsql.dll可能包含不兼容的内容，因为它不是由Unity3D构建的。