高级安装程序:安装进度对话框中的自定义逻辑(ProgressDlg)

public class ProgressDlg : Form
{
    private ProgressBar progressBar;
    private Label progressLabel;
    private Button cancelButton;

    public ProgressDlg()
    {
        InitializeComponent();
    }

    private void InitializeComponent()
    {
        this.progressBar = new ProgressBar();
        this.progressLabel = new Label();
        this.cancelButton = new Button();

        // 设置控件属性
        this.progressBar.Minimum = 0;
        this.progressBar.Maximum = 100;
        this.progressLabel.Text = "0%";
        this.cancelButton.Text = "Cancel";

        // 添加控件到窗体
        this.Controls.Add(this.progressBar);
        this.Controls.Add(this.progressLabel);
        this.Controls.Add(this.cancelButton);

        // 设置布局
        this.flowLayoutPanel1 = new FlowLayoutPanel();
        this.flowLayoutPanel1.Controls.Add(this.progressBar);
        this.flowLayoutPanel1.Controls.Add(this.progressLabel);
        this.flowLayoutPanel1.Controls.Add(this.cancelButton);

        this.ClientSize = new Size(300, 100);
        this.FormBorderStyle = FormBorderStyle.FixedDialog;
        this.MaximizeBox = false;
        this.MinimizeBox = false;
        this.StartPosition = FormStartPosition.CenterScreen;
        this.Text = "Installation Progress";
    }

    public void UpdateProgress(int percentage)
    {
        if (percentage < 0 || percentage > 100)
            throw new ArgumentOutOfRangeException(nameof(percentage));

        this.progressBar.Value = percentage;
        this.progressLabel.Text = $"{percentage}%";
    }

    public event EventHandler CancelRequested;

    private void cancelButton_Click(object sender, EventArgs e)
    {
        CancelRequested?.Invoke(this, EventArgs.Empty);
    }
}

public class CustomInstaller : Installer
{
    private ProgressDlg progressDlg;

    protected override void OnBeforeInstall(IDictionary savedState)
    {
        base.OnBeforeInstall(savedState);
        progressDlg = new ProgressDlg();
        progressDlg.CancelRequested += ProgressDlg_CancelRequested;
        progressDlg.Show();
    }

    protected override void OnAfterInstall(IDictionary savedState)
    {
        base.OnAfterInstall(savedState);
        progressDlg.Close();
    }

    private void UpdateProgress(int percentage)
    {
        if (progressDlg != null && !progressDlg.IsDisposed)
        {
            progressDlg.UpdateProgress(percentage);
        }
    }

    private void ProgressDlg_CancelRequested(object sender, EventArgs e)
    {
        // 处理取消请求
        throw new OperationCanceledException("Installation canceled by user.");
    }

    public override void Install(IDictionary stateSaver)
    {
        try
        {
            for (int i = 0; i <= 100; i++)
            {
                UpdateProgress(i);
                Thread.Sleep(100); // 模拟安装过程
            }
        }
        catch (OperationCanceledException)
        {
            // 处理取消操作
        }
    }
}