Question

每次登录时我都会收到此错误：

 Cannot convert method group 'Save Session' to non-delegate type 'object'. Did you intend to invoke the method?

这里是我的Login1组件代码：

protected void Login1_Authenticate(object sender, AuthenticateEventArgs e)
{
    Boolean blnresult;
    blnresult = false;

    // Pass UserName  and Password from login1 control to an authentication function which will check will check the user name and password from sql server.
    // Then will retrun a true or false value into blnresult variable
    blnresult = Authentication(Login1.UserName, Login1.Password);

    // If blnresult has a true value then authenticate user 
    if (blnresult == true)
    {
        FormsAuthentication.RedirectFromLoginPage(Login1.UserName, true);
        SaveSession();
        // This is the actual statement which will authenticate the user
        e.Authenticated = true;
    }
    else
    {            // If user faild to provide valid user name and password
        ScriptManager.RegisterStartupScript(this.Page, Page.GetType(), "text", "Materialize.toast('הפרטים שהוקשו שגויים.', 4000);", true);
        e.Authenticated = false;
    }

}

SaveSession（）代码：

protected void SaveSession()
{
    var connn = new MySqlConnection(ConfigurationManager.ConnectionStrings["Db"].ConnectionString);

    // Save SessionID in db
    string querySession = "UPDATE Users SET SessionID = @SessionID WHERE Id = @Id";

    MySqlCommand cmdSession = new MySqlCommand(querySession.Replace("'", ""), connn);
    cmdSession.Parameters.AddWithValue("@SessionID", Session.SessionID);
    cmdSession.Parameters.AddWithValue("@Id", GetUserId(Login1.UserName, Login1.Password));
    GlobalFunctions.CheckCon();

    try
    {
        connn.Open();
        cmdSession.ExecuteNonQuery();
    }
    catch { }
    finally
    {
        connn.Close();
    }
    GlobalFunctions.getUserid(GetUserId(Login1.UserName, Login1.Password));

    GlobalFunctions.logged = true;

}

我错过了什么..？我试图找到一个解决方案，但没有解决方案完全指向我的解决方案，我不在任何地方使用委托 - 这个错误来自哪里？谢谢:)）

Answer 1

如果您没有在任何地方使用委托，您可能会看到此错误消息，因为您在SaveSession()的方法调用之后省略了括号。看看你的代码，确保没有括号，SaveSession没有括号。

无法转换方法组＆＃39;保存会话＆＃39;到非委托类型＆＃39;对象＆＃39;。你打算调用这个方法吗？

1 个答案: