C# Alert弹出框自动关闭实例

以下是一个 C# Alert 弹出框自动关闭的示例：

using System;
using System.Windows.Forms;
using System.Threading;

public class Program
{
    static void Main()
    {
        // 创建一个 Alert 弹出框
        var alert = new Alert("这是一个自动关闭的弹出框", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);

        // 启动一个新线程，等待 3 秒后关闭弹出框
        new Thread(() =>
        {
            Thread.Sleep(3000);
            alert.Invoke(new Action(() => alert.Close()));
        }).Start();

        // 显示 Alert 弹出框
        alert.ShowDialog();
    }
}

public class Alert : Form
{
    public Alert(string message, string caption, MessageBoxButtons buttons, MessageBoxIcon icon)
    {
        Text = caption;
        FormBorderStyle = FormBorderStyle.FixedDialog;
        MaximizeBox = false;
        MinimizeBox = false;
        ShowInTaskbar = false;
        StartPosition = FormStartPosition.CenterScreen;
        Icon = SystemIcons.Information;
        ControlBox = false;

        var label = new Label
        {
            Text = message,
            AutoSize = true,
            Location = new System.Drawing.Point(10, 10)
        };
        Controls.Add(label);

        var okButton = new Button
        {
            DialogResult = DialogResult.OK,
            Text = "确定",
            Location = new System.Drawing.Point(140, 60)
        };
        Controls.Add(okButton);

        AcceptButton = okButton;
        DialogResult = DialogResult.OK;
    }
}

这个示例创建了一个 Alert 弹出框，并在启动一个新线程后等待 3 秒后自动关闭弹出框。你可以根据需要修改线程等待时间。