c# - 如何在 C# 中逐行读取 PDF 文件？

Question

在我的 Windows 8 应用程序中，我想逐行阅读 PDF，然后我想分配一个字符串数组。我该怎么做？

    public StringBuilder addd= new StringBuilder();
    string[] array;

    private async void btndosyasec_Click(object sender, RoutedEventArgs e)
    {
        FileOpenPicker openPicker = new FileOpenPicker();
        openPicker.ViewMode = PickerViewMode.List;
        openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
        openPicker.FileTypeFilter.Add(".pdf");

        StorageFile file = await openPicker.PickSingleFileAsync();



        if (file != null)
        {

            PdfReader reader = new PdfReader((await file.OpenReadAsync()).AsStream());

            for (int page = 1; page <= reader.NumberOfPages; page++)
            {

                addd.Append(PdfTextExtractor.GetTextFromPage(reader, page));
                string tmp= PdfTextExtractor.GetTextFromPage(reader, page);

                array[page] = tmp.ToString();

                reader.Close();
            }
        }
    }

Answer 1

您好，我也遇到了这个问题，我使用了这段代码，它有效。

您将需要对 iTextSharp 库的引用。

using iTextSharp.text.pdf;
using iTextSharp.text.pdf.parser;

PdfReader reader = new PdfReader(@"D:\test pdf\Blood Journal.pdf");
int intPageNum = reader.NumberOfPages;
string[] words;
string line;

    for (int i = 1; i <= intPageNum; i++)
    {
        text = PdfTextExtractor.GetTextFromPage(reader, i, new LocationTextExtractionStrategy());

        words = text.Split('\n');
        for (int j = 0, len = words.Length; j < len; j++)
        {
            line = Encoding.UTF8.GetString(Encoding.UTF8.GetBytes(words[j]));
        }
    }

words 数组包含 pdf 文件行