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我想创建一个方法,让我的应用程序等待 X 秒,然后继续执行一行脚本。例如,在阅读了许多类似的帮助主题后,这是我目前拥有的代码:

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

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
        {
        public Form1()
        {
            InitializeComponent();

            methods.WriteTextToScreen(label1, "Hello!");
            methods.sleepFor(1);
            methods.WriteTextToScreen(label1, "Welcome!");
            methods.sleepFor(1);
            methods.WriteTextToScreen(label1, "Allo!");
        }

        public class methods
        {
            public static int timeSlept;

            public static void WriteTextToScreen(Label LabelName, string text)
            {

                LabelName.Text = text;
            }


            public static void sleepFor(int seconds)
            {
                timeSlept = 0;

                System.Timers.Timer newTimer = new System.Timers.Timer();
                newTimer.Interval = 1000;
                newTimer.AutoReset = true;

                newTimer.Elapsed += new     System.Timers.ElapsedEventHandler(newTimer_Elapsed);

            newTimer.Start();

            while (timeSlept < seconds)
            {
                Application.DoEvents();
            }

            Application.DoEvents();

        }

        public static void newTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            timeSlept = IncreaseTimerValues(ref timeSlept);
            Application.DoEvents();
        }

        public static int IncreaseTimerValues(ref int x)
        {
            int returnThis = x + 1;
            return returnThis;
        }

    }

}
}

我想要做的是让我的程序执行 methods.WriteTextToScreen(label1, "Hello!") 然后等待 1 秒钟,然后以同样的方式继续。问题是我显示文本的表单根本不显示,直到它写上“Allo!” 到屏幕上,所以它第一次出现时就已经这么说了。我做错了什么,还是没有办法做到这一点?

4

1 回答 1

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表单在构建之前不会显示,即运行 Form1 中的所有代码。有关表单构造函数的信息,请参见此处:http: //msdn.microsoft.com/en-us/library/system.windows.forms.form.form.aspx

要解决您的问题,您可以将 writeTextToScreen 和 sleep 代码移动到加载方法的表单中。请参阅http://msdn.microsoft.com/en-us/library/system.windows.forms.form.onload.aspx

于 2013-06-01T17:53:02.210 回答