全能PDF:Pdfium.Net SDK 2023-03-18 Crack

1.  
   /// <summary>
2.  
   /// Create PDF Document on The Fly in C# using Pdfium.Net SDK Library
3.  
   /// </summary>
4.  
   public void CreatePdf()
5.  
   {
6.  
   // The PDF coordinate system origin is at the bottom left corner of the page.
7.  
   // The X-axis is pointing to the right. The Y-axis is pointing in upward direction.
8.  
   // The sizes and coordinates in this method are given in the inches.
9.  
    
10.  
    // Step 1: Initialize PDF library and create empty document
11.  
    // Return value: PdfDocument main class
12.  
    PdfCommon.Initialize();
13.  
    var doc = PdfDocument.CreateNew(); // Create a PDF document
14.  
     
15.  
    // Step 2: Add new page
16.  
    // Arguments: page width: 8.27", page height: 11.69", Unit of measure: inches
17.  
    // The PDF unit of measure is point. There are 72 points in one inch.
18.  
    var page = doc.Pages.InsertPageAt(doc.Pages.Count, 8.27f * 72, 11.69f * 72);
19.  
     
20.  
    // Step 3: Add graphics and text contents to the page
21.  
    // Insert image from file using standart System.Drawing.Bitmap class
22.  
    using (PdfBitmap logo = PdfBitmap.FromFile(@"e:\63\logo_square.png"))
23.  
    {
24.  
    PdfImageObject imageObject = PdfImageObject.Create(doc, logo, 0, 0);
25.  
    //image resolution is 300 DPI and location is 1.69 x 10.0 inches.
26.  
    imageObject.Matrix = new FS_MATRIX(logo.Width * 72 / 300, 0, 0, logo.Height * 72 / 300, 1.69 * 72, 10.0 * 72);
27.  
    page.PageObjects.Add(imageObject);
28.  
    }
29.  
     
30.  
    // Create fonts used for text objects
31.  
    PdfFont calibryBold = PdfFont.CreateFont(doc, "CalibriBold");
32.  
    // Insert text objects at 7.69"; 11.02" and font size is 25
33.  
    PdfTextObject textObject = PdfTextObject.Create("Sample text", 1.69f * 72, 11.02f * 72, calibryBold, 25);
34.  
    textObject.FillColor = FS_COLOR.Black;
35.  
    page.PageObjects.Add(textObject);
36.  
     
37.  
    // Step 5: Generate page content and save pdf file
38.  
    // argument: PDF file name
39.  
    page.GenerateContent();
40.  
    doc.Save(@"e:\63\sample_document.pdf", SaveFlags.NoIncremental);
41.  
    }

如何使用 C# 以编程方式从一组图像生成 PDF

1.  
   /// <summary>
2.  
   /// Generate PDF document From Multiple Images in C# using PDF Library
3.  
   /// </summary>
4.  
   public void GeneratePdf()
5.  
   {
6.  
   //Initialize C# PDF Library
7.  
   PdfCommon.Initialize();
8.  
   //Create a PDF document
9.  
   using (var doc = PdfDocument.CreateNew())
10.  
    {
11.  
    //Read images
12.  
    var files = System.IO.Directory.GetFiles(@"c:\Images\", "*.*",
13.  
    System.IO.SearchOption.AllDirectories);
14.  
    foreach (var file in files)
15.  
    {
16.  
    //Create empty PdfBitmap
17.  
    using (PdfBitmap pdfBitmap = PdfBitmap.FromFile(file))
18.  
    {
19.  
    //Create Image object
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    var imageObject = PdfImageObject.Create(doc, pdfBitmap, 0, 0);
21.  
    //Calculate size of image in PDF points
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    var size = CalculateSize(pdfBitmap.Width, pdfBitmap.Height);
23.  
    //Add empty page to PDF document
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    var page = doc.Pages.InsertPageAt(doc.Pages.Count, size);
25.  
    //Insert image to newly created page
26.  
    page.PageObjects.Add(imageObject);
27.  
    //set image matrix
28.  
    imageObject.Matrix = new FS_MATRIX(size.Width, 0, 0, size.Height, 0, 0);
29.  
    //Generate PDF page content to content stream
30.  
    page.GenerateContent();
31.  
    }
32.  
    }
33.  
    // Save PDF document as "saved.pdf" in no incremental mode
34.  
    doc.Save(@"c:\test.pdf", SaveFlags.NoIncremental);
35.  
    }
36.  
    }
37.  
    /// <summary>
38.  
    /// The function takes width and height of the bitmap in pixels as well as
39.  
    /// horizontal and vertical DPI and calculates the size of the PDF page.
40.  
    /// To understand the conversion you should know the following:
41.  
    /// One inch contains exactly 72 PDF points;
42.  
    /// DPI of the scanned image may vфry and depends on scanning resolution
43.  
    /// <summary>
44.  
    private FS_SIZEF CalculateSize(int width, int height, float dpiX=300, float dpiY=300)
45.  
    {
46.  
    return new FS_SIZEF()
47.  
    {
48.  
    Width = width * 72 / dpiX,
49.  
    Height = height * 72 / dpiY
50.  
    };
51.  
    }

此示例展示了如何使用简单的 C# 代码和 PDF 库从一堆扫描图像生成 PDF 文档。

1.  
   public void OnPrintClick()
2.  
   {
3.  
   if (PdfViewer.Document.FormFill != null)
4.  
   PdfViewer.Document.FormFill.ForceToKillFocus();
5.  
    
6.  
   //create an instance of PrintDocument class
7.  
   var printDoc = new PdfPrintDocument(PdfViewer.Document); // create an instance of Print document class that is used for printing PDF document.
8.  
    
9.  
   //Create a standard print dialog box
10.  
    var dlg = new PrintDialog();
11.  
    dlg.AllowCurrentPage = true;
12.  
    dlg.AllowSomePages = true;
13.  
    dlg.UseEXDialog = true;
14.  
    //sets the PrintDocument used to obtain PrinterSettings.
15.  
    dlg.Document = printDoc;
16.  
    //show PrinterDialog and print pdf document
17.  
    if (dlg.ShowDialog() == DialogResult.OK)
18.  
    printDoc.Print(); // C# Print PDF
19.  
    }

1.  
   /// <summary>
2.  
   /// Read PDF File and Extract Text From it in C#
3.  
   /// </summary>public void ExtractText()
4.  
   {
5.  
   //Initialize the SDK library
6.  
   //You have to call this function before you can call any PDF processing functions.
7.  
   PdfCommon.Initialize();
8.  
    
9.  
   //Open and load a PDF document from a file.
10.  
    using (var doc = PdfDocument.Load(@"c:\test001.pdf")) // C# Read PDF File
11.  
    {
12.  
    foreach (var page in doc.Pages)
13.  
    {
14.  
    //Gets number of characters in a page or -1 for error.
15.  
    //Generated characters, like additional space characters, new line characters, are also counted.
16.  
    int totalCharCount = page.Text.CountChars;
17.  
     
18.  
    //Extract text from page to the string
19.  
    string text = page.Text.GetText(0, totalCharCount);
20.  
     
21.  
    page.Dispose();
22.  
    }
23.  
    }
24.  
    }

1.  
   /// <summary>
2.  
   /// Extract Text Coordinates from Pdf in C# using PDF Library
3.  
   /// </summary>
4.  
   public void ExtractTextInfo()
5.  
   {
6.  
   //Initialize the SDK library
7.  
   //You have to call this function before you can call any PDF processing functions.
8.  
   PdfCommon.Initialize();
9.  
    
10.  
    //Open and load a PDF document from a file.
11.  
    using (var doc = PdfDocument.Load(@"c:\test001.pdf")) // C# Read PDF File
12.  
    {
13.  
    //Get second page from document
14.  
    using (var page = doc.Pages[1])
15.  
    {
16.  
    //Extract text information structure from the page
17.  
    // 10 - Index for the start characters
18.  
    // 25 - Number of characters to be extracted
19.  
    var textInfo = page.Text.GetTextInfo(10, 25);
20.  
     
21.  
    //Gets text from textInfo strtucture
22.  
    string text = textInfo.Text;
23.  
     
24.  
    //Gets a collection of rectangular areas bounding specified text.
25.  
    var rects = textInfo.Rects;
26.  
    }
27.  
    }
28.  
    }

如何在 PDF 文件中搜索文本

1.  
   /// <summary>
2.  
   /// Search for a Text in a PDF File in C# With Pdfium.Net SDK Library
3.  
   /// </summary>
4.  
   public void Search()
5.  
   {
6.  
   //Open PDF document
7.  
   using (var doc = PdfDocument.Load(@"d:\0\test_big.pdf")) // Read PDF document and enumerate pages
8.  
   {
9.  
   //Enumerate pages
10.  
    foreach(var page in doc.Pages)
11.  
    {
12.  
    var found = page.Text.Find("text for search", FindFlags.MatchWholeWord, 0);
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    if (found == null)
14.  
    return; //nothing found
15.  
    do
16.  
    {
17.  
    var textInfo = found.FoundText;
18.  
    foreach(var rect in textInfo.Rects)
19.  
    {
20.  
    float x = rect.left;
21.  
    float y = rect.top;
22.  
    //...
23.  
    }
24.  
    } while (found.FindNext());
25.  
     
26.  
    page.Dispose();
27.  
    }
28.  
    }
29.  
    }

 

此示例说明如何使用简单的 C# 代码和 PDF 库在 PDF 文档中搜索文本。

1.  
   /// <summary>
2.  
   /// Split PDF in C# using PDF Library
3.  
   /// </summary>
4.  
   public void SplitDocument()
5.  
   {
6.  
   //Initialize the SDK library
7.  
   //You have to call this function before you can call any PDF processing functions.
8.  
   PdfCommon.Initialize();
9.  
    
10.  
    //Open and load a PDF document from a file.
11.  
    using (var sourceDoc = PdfDocument.Load(@"c:\test001.pdf")) // C# Read PDF File
12.  
    {
13.  
    //Create one PDF document for pages 1-5.
14.  
    using (var doc = PdfDocument.CreateNew())
15.  
    {
16.  
    //Import pages from source document
17.  
    doc.Pages.ImportPages(sourceDoc, "1-5", 0);
18.  
    //And save it to doc1.pdf
19.  
    doc.Save(@"c:\doc1.pdf", SaveFlags.Incremental);
20.  
    }
21.  
     
22.  
    //Create another PDF document for pages 5-10.
23.  
    using (var doc = PdfDocument.CreateNew())
24.  
    {
25.  
    //Also import pages
26.  
    doc.Pages.ImportPages(sourceDoc, "5-10", 0);
27.  
    //And save them too
28.  
    doc.Save(@"c:\doc2.pdf", SaveFlags.Incremental);
29.  
    }
30.  
    }
31.  
    }

1.  
   /// <summary>
2.  
   /// Merge PDFs in C# using PDF Library
3.  
   /// </summary>
4.  
   public void MergePdf()
5.  
   {
6.  
   //Initialize the SDK library
7.  
   //You have to call this function before you can call any PDF processing functions.
8.  
   PdfCommon.Initialize();
9.  
    
10.  
    //Open and load a PDF document in which will be merged other files
11.  
    using (var mainDoc = PdfDocument.Load(@"c:\test001.pdf")) // C# Read source PDF File #1
12.  
    {
13.  
    //Open one PDF document.
14.  
    using (var doc = PdfDocument.Load(@"c:\doc1.pdf")) //Read PDF File #2
15.  
    {
16.  
    //Import all pages from document
17.  
    mainDoc.Pages.ImportPages(
18.  
    doc,
19.  
    string.Format("1-{0}", doc.Pages.Count),
20.  
    mainDoc.Pages.Count
21.  
    );
22.  
    }
23.  
     
24.  
    //Open another PDF document.
25.  
    using (var doc = PdfDocument.Load(@"c:\doc2.pdf"))
26.  
    {
27.  
    //Import all pages from document
28.  
    mainDoc.Pages.ImportPages(
29.  
    doc,
30.  
    string.Format("1-{0}", doc.Pages.Count),
31.  
    mainDoc.Pages.Count
32.  
    );
33.  
    }
34.  
     
35.  
    mainDoc.Save(@"c:\ResultDocument.pdf", SaveFlags.NoIncremental);
36.  
     
37.  
     
38.  
    }
39.  
    }

如何以编程方式从 PDF 字段填充和提取数据

1.  
   /// <summary>
2.  
   /// Filling Editable PDF Fields and Extracting Data From Them using .Net PDF Library
3.  
   /// </summary>
4.  
   private void btnTest_Click(object sender, RoutedEventArgs e)
5.  
   {
6.  
   var forms = new PdfForms();
7.  
   var doc = PdfDocument.Load(@"c:\test.pdf", forms); // C# Read PDF Document
8.  
   //doc.FormFill is equal to forms and can be used to get access to acro forms as well;
9.  
    
10.  
    int i = 0;
11.  
    foreach(var field in forms.InterForm.Fields)
12.  
    {
13.  
    if(field.FieldType == Patagames.Pdf.Enums.FormFieldTypes.FPDF_FORMFIELD_TEXTFIELD)
14.  
    {
15.  
    field.Value = "This is a field #" ( i);
16.  
    }
17.  
    }
18.  
    }

 

此示例代码演示了如何使用 .Net PDF 库以编程方式填写 pdf 文档中的所有可编辑表单。