Empty/blank 在 C# 空项目 (.Net) 中形成 window

Question

我需要一些帮助，因为我不知道我的新项目有什么问题！

我在 VS 2019 中启动了一个新的空项目 (.NET)，添加了相同的引用来创建表单并在其上绘制不同的控件，如按钮、标签等。 . 一切对我来说都很好，但我没有得到 warning/error。当我运行我的项目时，它显示了我预期的表格，但它是空的...表格上没有按钮或标签，只有白色的空白 window [见图]。

我不熟悉空项目，所以可能我错过了一些东西..我试图输入 "InitializeComponent()" 到 class 构造函数但是我收到错误 “错误 CS0103 当前上下文中不存在名称 'InitializeComponent'”.. 我不使用设计器，因为这是一个空项目而且它不是附带它（我不需要它！），所以我想我不需要这个方法？

这是帮助定位问题的代码和图片。可能只是某个地方的菜鸟错误，但我无法弄清楚。请帮忙！

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace FileManager
{
    class EntryPoint
    {
        static void Main(string[] args)
        {            
            Manager manager = new Manager();
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing;

namespace FileManager
{
    public class Manager
    {
        public Form WindowMain { get; set; }
        public ListView ViewArea { get; set; }
        public ImageList IconList { get; set; }
        public Button Back_btn { get; set; }
        public TextBox Path_tbx { get; set; }
        public Label FileNameTxt_lbl { get; set; }

        public Manager()
        {
            //InitializeComponent(); << Drop Error CS0103

            WindowMain = new Form
            {
                StartPosition = FormStartPosition.CenterScreen,
                FormBorderStyle = FormBorderStyle.Sizable,
                Size = new Size(960, 540),
                Text = "FileManager"
            };

            ViewArea = new ListView
            {
                SmallImageList = IconList,
                LargeImageList = IconList,
                View = View.LargeIcon
            };

            IconList = new ImageList
            {
                ImageSize = new Size(48, 48),
                ColorDepth = ColorDepth.Depth32Bit
            };

            Back_btn = new Button
            {
                Location = new Point(100, 100),
                Text = "Back"
            };

            FileNameTxt_lbl = new Label
            {
                Text = "File Name:"
            };

            Application.Run(WindowMain);
        }
    }
}

Answer 1

我建议您创建一个 Windows 表单应用程序而不是空项目。通过示例学习会更容易。

InitializeComponent 是必需的方法。请检查带有注释的自动生成的文件：

partial class Form1
{
    /// <summary>
    /// Required designer variable.
    /// </summary>
    private System.ComponentModel.IContainer components = null;

    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    #region Windows Form Designer generated code

    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
        this.components = new System.ComponentModel.Container();
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(800, 450);
        this.Text = "Form1";
    }

    #endregion
}

然后 InitializeComponent 必须在构造函数中调用，如

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

Answer 2

我找到了我的问题的解决方案！在我的窗体上显示控件非常简单...我应该将我的每个控件（按钮等）添加到我的窗体对象 (WindowMain) 的控件集合中，如此简单！

这是我的固定代码：

namespace FileManager
{
    public class Manager
    {
        public Form WindowMain { get; set; }
        public ListView ViewArea { get; set; }
        public ImageList IconList { get; set; }
        public Button Back_btn { get; set; }
        public TextBox Path_tbx { get; set; }
        public Label FileNameTxt_lbl { get; set; }

        public Manager()
        {
            WindowMain = new Form
            {
                StartPosition = FormStartPosition.CenterScreen,
                FormBorderStyle = FormBorderStyle.Sizable,
                Size = new Size(960, 540),
                Text = "FileManager"
            };

            ViewArea = new ListView
            {
                SmallImageList = IconList,
                LargeImageList = IconList,
                View = View.LargeIcon
            };

            IconList = new ImageList
            {
                ImageSize = new Size(48, 48),
                ColorDepth = ColorDepth.Depth32Bit
            };

            Back_btn = new Button
            {
                Location = new Point(100, 100),
                Text = "Back"
            };

            FileNameTxt_lbl = new Label
            {
                Text = "File Name:"
            };
            
            // These lines need to fix:
            WindowMain.Controls.Add(ViewArea);
            WindowMain.Controls.Add(Back_btn);
            WindowMain.Controls.Add(FileNameTxt_lbl);

            Application.Run(WindowMain);
        }
    }
}

Empty/blank 在 C# 空项目 (.Net) 中形成 window

Empty/blank form window in C# Empty Project (.Net)

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