C#中调用带参数的类

Question

 
public partial class Route : Form
    {
        public List<string> picCount = new List<string>();
        public Route(string statusInfo)
        {
            InitializeComponent();
            this.listBox1.Focus();
            this.statusInfo = statusInfo;
        }
    }public class ThreadWithState
    {
        public void ThreadProc()
        {
            //这边报错， 没用0个参数          
            Route r = new Route("");
            //请问这边该怎么改？
            r.picCount...
        }
    }
求解决方法

Answer 1

真能想那分明是构造函数   public Post(int Id,string title)
        {
            this.ID = Id;
            this.Title = title;
        }
        public int ID { get; set; }
        public int CategoryID { get; set; }        public string Title { get; set; }
        public string Summary { get; set; }
        public string Alias { get; set; }
        public string Content { get; set; }
        public DateTime CreateTime { get; set; }        public Category Category { get; set; }
        public ICollection<Tag> Tags { get; set; }
        public ICollection<Comment> Coments { get; set; }
    }
    Post post=new Post(1,"title")

Answer 2

public void fangfa() ; 
public gouzao();你那是构造。

Answer 3

 public class Post
    {
        public Post(int Id,string title)
        {
            this.ID = Id;
            this.Title = title;
        }        public int ID { get; set; }
        public int CategoryID { get; set; }        public string Title { get; set; }
        public string Summary { get; set; }
        public string Alias { get; set; }
        public string Content { get; set; }
        public DateTime CreateTime { get; set; }        public Category Category { get; set; }
        public ICollection<Tag> Tags { get; set; }
        public ICollection<Comment> Coments { get; set; }
    }Post post=new Post(1,"title")

Answer 4

Route r = new Route("aaaaaaaaaaa");给构造函数传值

Answer 5

 Route 类 在 Program.cs 里看有没有启动 Application.Run(new  Route("dd"));
如果是这样Application.Run(new  Route());会报错 改成 Application.Run(new  Route(""));

Answer 6

解决办法有2种：
方法一，在Program中的入口实例化构造函数就必须传参： static class Program
    {
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Route());
        }
    }方法二：
  
public partial class Route : Form
    {
        public List<string> picCount = new List<string>();
        public Route(string statusInfo)
        {
            InitializeComponent();
            this.listBox1.Focus();
            this.statusInfo = statusInfo;
        }
    }public class ThreadWithState
    {
        public void ThreadProc()
        {
            //这边报错， 没用0个参数          
            Route r = new Route("");
            //请问这边该怎么改？
            r.picCount...
        }
    }类Route中没有默认的构造函数引起的，只要添加默认的构造函数就可以了。 

Answer 7

public Route(string statusInfo)
        {
            InitializeComponent();
            this.listBox1.Focus();
            this.statusInfo = statusInfo;
        }
自定义构造函数后，当进行实例化时通过该构造函数对其进行初始化，构造函数所带参数也要在相应位置赋值。例： public Route(string statusInfo,int intIndex){} 实例化时Route GetRoute=new Route("open",0) 。参数不能空缺。不知道说得对不对，有误请指正。