具有2个计数器形式和一个主C＃的计数器点击器

本文介绍了具有2个计数器形式和一个主C＃的计数器点击器的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 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.