动态创建按钮的保存功能

Question

我想保存用户在程序执行过程中创建的文本和单个按钮功能。为此，我使用 Properties.Settings.Default 和我创建的 ButtonStringCollection 集合。

我尝试使用另一个表格来填写，但我来到了InputBox。关闭程序后，它会“忘记”创建的按钮的所有文本，并且需要重新输入它们，并且没有什么可以阻止更改值。我希望保留这些值，但我不知道可以使用什么机制。 所有代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Runtime.Serialization.Formatters.Soap;
using System.IO;
using System.Collections.Specialized;
using Microsoft.VisualBasic;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {

        int x1 = 10;
        public string name;
        public Form1()
        {
            InitializeComponent();

            if (Properties.Settings.Default.ButtonStringCollection == null)
                Properties.Settings.Default.ButtonStringCollection = new StringCollection();
        }      

        private void make_Book(int x, int y)
        {
            name = Interaction.InputBox("Enter Name", "", "", 300,300);
            Form2 form2 = new Form2();
            Button book1 = new Button();
           // book1.Name = name;
            book1.Text = name;
            book1.Height = 50;
            book1.Width = 70;
            book1.Location = new Point(44 + x, 19 + y);
            //book1.Click += new EventHandler(myClickHandler);
            flowLayoutPanel1.Controls.Add(book1);
            
        }
        private void make_BookButtonAndStore(int x, int y)
        {
            make_Book(x, y);

            Properties.Settings.Default.ButtonStringCollection.Add(String.Format("{0};{1};{2}", x, y, name));
            Properties.Settings.Default.Save();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            foreach (string line in Properties.Settings.Default.ButtonStringCollection)
            {
                if (!String.IsNullOrWhiteSpace(line))
                {
                    // The line will be in format x;y;name
                    string[] parts = line.Split(';');
                    if (parts.Length >= 3)
                    {
                        int x = Convert.ToInt32(parts[0]);
                        int y = Convert.ToInt32(parts[1]);

                        make_Book(x, y);
                    }
                }
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
          //  Form2 form2 = new Form2();
          //  form2.Show();
           // form2.ShowDialog();
            make_BookButtonAndStore(x1 += 80, 20);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (flowLayoutPanel1.Controls.Count > 0)
            {
                flowLayoutPanel1.Controls.RemoveAt(0);
                Properties.Settings.Default.ButtonStringCollection.RemoveAt(0);
                Properties.Settings.Default.Save();
            }
            else
                MessageBox.Show("На панеле больше нет кнопок");
        }
    }
}

Answer 1

创建一个文件来存储所有按钮数据。序列化值得学习，对于未来的项目也是如此。

下载 NuGet 包 Newtonsoft.Json，并创建一个类来处理该问题：

using Newtonsoft.Json;

[JsonObject(MemberSerialization.OptIn)]
public class myButton : Button
{
    //... 
    //..
    // Create your own button...
    //..
}

public static class Buttons
{
    private static string defaultPath = @$"{Directory.GetCurrentDirectory()}\buttons\myButtonList.obj";

    private static JsonSerializerSettings serializerSettings = new JsonSerializerSettings()
    {
        NullValueHandling = NullValueHandling.Include,
        Formatting = Formatting.Indented,
        ReferenceLoopHandling = ReferenceLoopHandling.Ignore
    };

    public static List<myButton> ButtonList { get; private set; } = new List<myButton>();

    public static List<myButton> TryLoading(string? Path = null) 
    {
        Path ??= defaultPath;

        if(File.Exists(@Path))
        {
            try
            {
                string FileContent = File.ReadAllText(Path);
                ButtonList = JsonConvert.DeserializeObject<List<myButton>>(FileContent, serializerSettings) ?? [];
            }
            catch (Exception ex)
            {
                throw new Exception("Loading failed", ex);
            }
        }
        return ButtonList;
    }

    public static bool Save(string? Path = null)
    {
        Path ??= defaultPath;
        try
        {
            if (!Directory.Exists(Path))
            {
                Directory.CreateDirectory(Path.Substring(0, Path.LastIndexOf("\\")-1));
            }
            string Jsonstring = JsonConvert.SerializeObject(ButtonList, serializerSettings);

            File.WriteAllText(Path, Jsonstring);
            return true;
        }
        catch (Exception ex)
        {
            throw new Exception("Save failed", ex);
        }
    }
}

表格1：

private void Form1_Load(object sender, EventArgs e)
{
    if (Tools.Buttons.TryLoading().Count > 0)
    {
        Tools.Buttons.ButtonList.ForEach(x =>
        {
            myFlowPanel.Controls.Add(x);
        });
    }
}

所有按钮数据都将被很好地格式化（即）：

[
  {
    "Name": "aaaa",
    "Text": "btn_aaaa",
    "Location": "54, 29",
    "Size": "70, 50"
  }
]