只添加检查的项目从checklistbox到ListView控件

Question

我的情况：

我有Form1一个人口checklistbox控制。 然后我有一个listView控制Form2。

我希望用户能够检查0123B上的checklistbox上的项目，然后点击Form1上的按钮打开Form2。

Form2包含listView控制，我想仅在检查了Form1从checklistbox项目来填充。

我试图

namespace Boodschappenlijst 
{ 
    public partial class Form1 : Form 
    { 
     public Form1() 
     { 
      InitializeComponent(); 
     } 

    public static string[] strKruideniersw = new string[] { Boodschappenlijst.producten[0], Boodschappenlijst.producten[1], Boodschappenlijst.producten[2] }; 
    public static string[] strVerswaren = new string[] { Boodschappenlijst.producten[3], Boodschappenlijst.producten[4], Boodschappenlijst.producten[5] }; 
    public static string[] strVerzorgingspr = new string[] { Boodschappenlijst.producten[6], Boodschappenlijst.producten[7], Boodschappenlijst.producten[8], Boodschappenlijst.producten[9] }; 

    public static List<string> kruidenierswList = new List<string>(strKruideniersw); 
    public static List<string> verswarenList = new List<string>(strVerswaren); 
    public static List<string> verzproductenList = new List<string>(strVerzorgingspr); 

    public static string[] strKruidenierswCh; 

    public void Form1_Load(object sender, EventArgs e) 
    { 
     clbKruidenierswaren.Items.AddRange(strKruideniersw); 
     clbVerswaren.Items.AddRange(strVerswaren); 
     clbVerzproducten.Items.AddRange(strVerzorgingspr); 
     strKruidenierswCh = clbKruidenierswaren.CheckedItems; 
    } 

    // TODO 
    // public string kruidenierswChecked = clbKruidenierswaren.CheckedItems; 


    private void button1_Click(object sender, EventArgs e) 
    { 
     // Create a new instance of the Form2 class 
     Form2 form2 = new Form2(); 

     // Show the settings form 
     form2.Show(); 
    } 
} 

public abstract class Boodschappenlijst : Form1 
{ 
    public static string[] producten = new string[] { "Peper", "Zout", "Kruidnagel", "Sla", "Komkommer", "Tomaten", "Tandpasta", "Shampoo", "Wax", "Deodorant" }; 

    // Not working.. clbKruidenierswaren is not static. 
    List<string> items = clbKruidenierswaren.CheckedItems.Cast<string>().ToList(); 

    // Make form1 controls accessible for other classes? 
    // Form1 form1 = Application.OpenForms.OfType<Form1>().FirstOrDefault(); 



} 
} 

但我得到的错误

一个字段初始不能引用非静态字段，方法或属性“Form1.clbKruidenierswaren”。

你能指点我的解决方案吗？

Answer 1

问题是你传递UI对象，你应该传递数据。这里有一个Form的例子，可以在施工过程中给出数据。

public class BaseForm : Form 
{ 
    public object InitialisationData { get; set; } 
} 

public partial class MagicForm : BaseForm 
{ 
    public string MyBindableGuy; 

    public MagicForm() 
    { 
     InitializeComponent(); 

     MyBindableGuy = InitialisationData as string; 
    } 
} 

，并打开它：

var myForm = new MagicForm(); 
myForm.InitialisationData = "Hi, I'm a string."; 
myForm.Show(); 

Answer 2

你应该做一个构造函数这样的类：

类本身：

public class Boodschappenlijst 
{ 
    public static string[] producten { get; set; } = new string[] { "Peper", "Zout", "Kruidnagel", "Sla", "Komkommer", "Tomaten", "Tandpasta", "Shampoo", "Wax", "Deodorant" }; 
    private List<string> Items { get; set; } 

    public Boodschappenlijst(List<string> items)// << Constructor 
    { 
     Items = items; 
    } 
} 

然后再做一个实例类如下：

在地方（？表格）您有clbKruidenierswaren：

Boodschappenlijst boodschappenLijst = 
      new Boodschappenlijst(clbKruidenierswaren.CheckedItems.Cast<string>().ToList()); 

Answer 3

public partial class Form1 : Form 
{ 
    // Todo declare the variables 
    private List<string> kruidenierswList; 
    private List<string> verswarenList; 
    private List<string> verzproductenList; 

    public Form1() 
    { 
     InitializeComponent(); 

     // call the instance once and add that to the variable lijst 
     Boodschappenlijst lijst = Boodschappenlijst.Instance; // <- @ others on S/O this is just used as information I know I could do a new as well. 

     // initialize the variables 
     kruidenierswList = new List<string>() { lijst.Products[0], lijst.Products[1], lijst.Products[2] }; 
     verswarenList = new List<string>() { lijst.Products[3], lijst.Products[4], lijst.Products[5] }; 
     verzproductenList = new List<string>() { lijst.Products[6], lijst.Products[7], lijst.Products[8], lijst.Products[9] }; 
    } 

    public void Form1_Load(object sender, EventArgs e) 
    { 
     // populate the checklist boxes 
     clbKruidenierswaren.Items.AddRange(kruidenierswList.ToArray()); 
     clbVerswaren.Items.AddRange(verswarenList.ToArray()); 
     clbVerzproducten.Items.AddRange(verzproductenList.ToArray()); 
    } 

    private void button1_Click(object sender, EventArgs e) 
    { 
     // Create a new instance of the Form2 class 
     Form2 form2 = new Form2(); 

     // Show the settings form 
     form2.Show(); 
    } 
} 

public class Boodschappenlijst 
{ 
    private static Boodschappenlijst instance; 

    public string[] Products 
    { 
     get; 
     private set; 
    } 

    private Boodschappenlijst() 
    { 
     Products = new string[] { "Peper", "Zout", "Kruidnagel", "Sla", "Komkommer", "Tomaten", "Tandpasta", "Shampoo", "Wax", "Deodorant" }; 
    } 

    public static Boodschappenlijst Instance 
    { 
     get 
     { 
      // singleton initialization => look for design pattern - singleton <- Design patterns can brighten your day. 
      // 
      return instance == null ? instance = new Boodschappenlijst() : instance; 
     } 
    } 
}