.NET在winform中打开PDF而没有外部依赖性

Install-Package Spire.PDF

using Spire.Pdf;

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

        private void btnOpenPdf_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog = new OpenFileDialog();
            openFileDialog.Filter = "PDF files (*.pdf)|*.pdf";
            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                string filePath = openFileDialog.FileName;
                DisplayPdf(filePath);
            }
        }

        private void DisplayPdf(string filePath)
        {
            PdfDocument pdfDocument = new PdfDocument();
            pdfDocument.LoadFromFile(filePath);

            // 创建一个WebBrowser控件来显示PDF
            WebBrowser webBrowser = new WebBrowser();
            webBrowser.Dock = DockStyle.Fill;
            this.Controls.Add(webBrowser);

            // 将PDF转换为HTML并在WebBrowser控件中显示
            string htmlContent = pdfDocument.SaveAsHtml();
            webBrowser.DocumentText = htmlContent;
        }
    }
}