c# – 公共课 – “由于其保护等级而无法访问.只能处理公共类型.“

概述我正在做一个测试项目,以了解一个对象的 XML序列化,我得到一个奇怪的运行时错误： namespace SerializeTest{public partial class Form1 : Form{ public Form1() { InitializeComponent(); } private void Form1_Load(obje 我正在做一个测试项目,以了解一个对象的 XML序列化,我得到一个奇怪的运行时错误：

namespace SerializeTest{public partial class Form1 : Form{    public Form1()    {        InitializeComponent();    }    private voID Form1_Load(object sender,EventArgs e)    {    }    private voID serializeConnection(Conn connection)    {        XmlSerializer serializer = new XmlSerializer(typeof(Conn));        TextWriter textWriter = new StreamWriter(@"serialized.xml");        serializer.Serialize(textWriter,connection);        textWriter.Close();    }    static List<Conn> deserializeConnection()    {        XmlSerializer deserializer = new XmlSerializer(typeof(List<Conn>));        TextReader textReader = new StreamReader(@"serialized.xml");        List<Conn> connectionList;        connectionList = (List<Conn>)deserializer.Deserialize(textReader);        textReader.Close();        return connectionList;    }    private voID btnSerialize_Click(object sender,EventArgs e)    {        Conn conn = getConnection();        serializeConnection(conn);    }    private Conn getConnection()    {        Conn connection = new Conn();        connection.connectionname = txtname.Text;        connection.address = txtAddress.Text;        connection.height = 2542;        connection.wIDth = 4254;        connection.password = txtPassword.Text;        connection.smartSizing = false;        connection.username = txtUsername.Text;        connection.port = 474;        return connection;    }    private voID btnDeserialize_Click(object sender,EventArgs e)    {        int count = deserializeConnection().Count;        lblStatus.Text = "Count: " + count;    }}class Conn{    public Conn()    {    }    public string connectionname { get; set; }    public int height { get; set; }    public int wIDth { get; set; }    public string address { get; set; }    public string username { get; set; }    public string password { get; set; }    public int port { get; set; }    public bool smartSizing { get; set; }}}

课堂是公开的 – 我不明白可能导致这个错误.任何帮助将不胜感激.

解决方法

The Class is public

不,这不对.这是宣言：

class Conn{    ...}

您尚未指定任何访问修饰符,因此默认为内部(假设它是非嵌套的).只是因为它有一个公共构造函数没有公开.您需要明确公开公开：

public class Conn{    ...}

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