具有2个计数器形式和一个主C＃的计数器点击器 [英] Counter clicker with 2 counter form and one main C#

问题描述

这适用于排队系统。当单击下一个按钮时，它位于frmCounter1和frmCounter2中，必须在主要形式的首选文本框中处理增量编号。



我有什么试过：

 // counter1 
 namespace QueuingSystem 
 {
 public partial class Counter1 ：表格
 {
 int count = 0; 
主视图=新Main（）; 
 public Counter1（）
 {
 InitializeComponent（）; 
} 
 
 private void btnNext1_Click（object sender，EventArgs e）
 {
 count ++; 
 label1.Text = count.ToString（）; 
 view.label4.Text = count.ToString（）; 
} 
 
 private void Counter1_Load（object sender，EventArgs e）
 {
 view.Show（）; 
} 
} 
} 

 // counter2 
 namespace QueuingSystem 
 {
 public partial class Counter2：Form 
 {
 int count = 0; 
主视图=新Main（）; 
 public Counter2（）
 {
 InitializeComponent（）; 
} 
 private void btnNext2_Click（object sender，EventArgs e）
 {
 count ++; 
 label1.Text = count.ToString（）; 
 view.label5.Text = count.ToString（）; 
} 
 
 private void Counter2_Load（object sender，EventArgs e）
 {
 view.Show（）; 
} 
} 
} 

解决方案

而不是使用正常方式的事件，你也可以简单地将你的计数变量放在程序中作为静态变量。

然后你可以简单地引用它as： Program.count 在表单中，例如：

使用System; 
使用System.Windows.Forms; 
 
 namespace QueuingSystem 
 {
 static class Program 
 {
 public static int count = 123; 
 
 ///< summary> 
 ///应用程序的主要入口点。 
 ///< / summary> 
 [STAThread] 
 static void Main（）
 {
 Application.EnableVisualStyles（）; 
 Application.SetCompatibleTextRenderingDefault（false）; 
 Application.Run（new Form1（））; 
} 
} 
} 

并在您的表格中：

使用System.Windows.Forms的; 
 
 namespace QueuingSystem 
 {
 public partial class Form1：Form 
 {
 public Form1（）
 {
 InitializeComponent（） ; 
 this.Text = Program.count.ToString（）; 
} 
} 
} 

摆脱对主表单的引用，这是一个坏主意 - 而且它不会起作用，因为它是表单的不同实例，而不是你正在显示的那个。



相反，使用事件来告诉主表单中的孩子表格做了一些事情，需要注意：在两种表格之间传递信息，第2部分：儿童到家长 [ ^ ]

它可能看起来很复杂，但它并不是真的 - 它是完全相同的机制，你一直用它来处理按钮，文本框和你的其他一切形式。

this is for a queuing system. When the next button is clicked which is in frmCounter1 and frmCounter2 the increment number must be processed in their preferred textbox which is in main form.

What I have tried:

//counter1
namespace QueuingSystem
{
    public partial class Counter1 : Form
    {
        int count = 0;
        Main view = new Main();
        public Counter1()
        {
            InitializeComponent();
        }
        
        private void btnNext1_Click(object sender, EventArgs e)
        {
            count++;
            label1.Text = count.ToString();
            view.label4.Text = count.ToString();
        }

        private void Counter1_Load(object sender, EventArgs e)
        {
            view.Show();
        }
    }
}

//counter2
namespace QueuingSystem
{
    public partial class Counter2 : Form
    {
        int count = 0;
        Main view = new Main();
        public Counter2()
        {
            InitializeComponent();
        }
        private void btnNext2_Click(object sender, EventArgs e)
        {
            count++;
            label1.Text = count.ToString();
            view.label5.Text = count.ToString();
        }

        private void Counter2_Load(object sender, EventArgs e)
        {
            view.Show();
        }
    }
}

解决方案

Instead of using events, which is the normal way, you can also simply put your count variable in Program as a Static variable.
Then your can simply refer to it as: Program.count in your forms, example:

using System;
using System.Windows.Forms;

namespace QueuingSystem
{
    static class Program
    {
        public static int count = 123;

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

And in your Form:

using System.Windows.Forms;

namespace QueuingSystem
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            this.Text = Program.count.ToString();
        }
    }
}

Get rid of the reference to your main form, that's a bad idea - and it won't work as that's a different instance of the form, not the one you are displaying.

Instead, use Events to "tell" the Main form that the child form has done something and needs attention: Transferring information between two forms, Part 2: Child to Parent[^]
It may look complicated, but it isn't really - it's exactly the same mechanism, you use all the time to process the buttons, text boxes, and everything else on your forms.

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