Document sDoc = new Document();
sDoc.LoadFromFile(inputFile);
ToPdfParameterList toPdfParameter = new ToPdfParameterList();
toPdfParameter.DigitalSignatureInfo = new PdfDigitalSignatureInfo(pfxInputFile, pfxPassword, "Test signing", "Spire Doc"); 
toPdfParameter.DigitalSignatureInfo.HashAlgorithm = PdfDigitalSignatureHashAlgorithm.RipeMD160;
toPdfParameter.DigitalSignatureInfo.SignatureDate = nowDateTime;
toPdfParameter.DigitalSignatureInfo.TimestampConfiguration = new PdfDigitalSignatureTimestampConfiguration("https://freetsa.org/tsr", "bill", "Password");
sDoc.SaveToFile(outputFile3, toPdfParameter);

int firstColumn = doc.Bookmarks["t_insert"].FirstColumn;
int lastColumn = doc.Bookmarks["t_insert"].LastColumn;

SearchOptions op = new SearchOptions();
op.IgnoreOfficeMath = false;
doc.Replace("ab","new", op);

Document doc = new Document("xx.docx");
ToPdfParameterList toPdf = new ToPdfParameterList(){ PageLayout = PdfPageLayout.TwoColumnLeft };
doc.SaveToFile("xx.pdf", toPdf);

pdf = PdfDocument()
page = pdf.Pages.Add(PdfPageSize.A3())
pen = PdfPen(PdfRGBColor(Color.get_Black()), 0.1)
#Set line border location and size
x = 5.0
y = 5.0
width = page.Size.Width - (x * 2)
height = page.Size.Height - (y * 2)


page.Canvas.DrawRectangle(pen, x, y, width, height)

# Add table
grid = PdfGrid()
row = grid.Rows.Add()
grid.Columns.Add(2)
for i in range(grid.Columns.Count):
    grid.Columns[i].Width = 50
    row.Cells[i].Value = "add{0:d}".format(i + 1)

border = PdfBorders()
border.All = PdfPen(Color.get_Gray())

for j in range(grid.Rows.Count):
    cells = grid.Rows.get_Item(j).Cells
        for k in range(cells.Count):
            cells.get_Item(k).Style.Borders = border

#Draw the grid table
grid.Draw(page, PointF(50.0, 50.0))

pdf.SaveToFile(outputFile)
pdf.Close()

pdf = PdfDocument()
pdf.LoadFromFile(inputFile)
page = pdf.Pages[0];

finder = PdfTextFinder(page)
finder.Options.Parameter = TextFindParameter.WholeWord
finder.Options.Parameter = TextFindParameter.IgnoreCase
fragments = finder.Find("An older meaning still in use today is that of Aristotle, for whom scientific knowledge was a body of reliable knowledge that can be logically and rationally explained.")
textFragment = fragments[0]
text = "There is a markup annotation added by Spire.PDF for .NET."
quadPoints = [None for _ in range(len(textFragment.Bounds) * 4)]
for i in range(len(textFragment.Bounds)):
    rect = textFragment.Bounds[i]
    quadPoints[4 * i] = PointF(rect.Left, rect.Top)
    quadPoints[4 * i + 1] = PointF(rect.Right, rect.Top)
    quadPoints[4 * i + 2] = PointF(rect.Left, rect.Bottom)
    quadPoints[4 * i + 3] = PointF(rect.Right, rect.Bottom)

annotation = PdfTextMarkupAnnotation(textFragment.Bounds[0], quadPoints)
annotation.Text = text
annotation.TextMarkupColor = PdfRGBColor(Color.get_Blue())
page.Annotations.Add(annotation)
pdf.SaveToFile(outputFile)

pdf.SaveAsImage(pageIndex,dpiX,dpiY)

// Create a new Document object.
Document document = new Document();

//Create list style 1       
ListStyle listStyle_1 = document.Styles.Add(ListType.Bulleted, "bulletList");
ListLevelCollection Levels_1 = listStyle_1.ListRef.Levels;
ListLevel L0 = Levels_1[0];
ListLevel L1 = Levels_1[1];
ListLevel L2 = Levels_1[2];

ListStyle listStyle_2 = document.Styles.Add(ListType.Bulleted, "bulletList");
ListLevelCollection Levels_2 = listStyle_2.ListRef.Levels;
ListLevel l0 = Levels_2[0];
ListLevel l1 = Levels_2[1];
ListLevel l2 = Levels_2[2];

//Create list style 1
L0.ParagraphFormat.LineSpacing = 10 * 1.5f;
L1.CharacterFormat.FontSize = 9;
L1.IsLegalStyleNumbering = true;
L1.PatternType = ListPatternType.Arabic;
L1.FollowCharacter = FollowCharacterType.Nothing;
L1.BulletCharacter = "\x006e";
L1.NumberAlignment = ListNumberAlignment.Left;
L1.NumberPosition = -10;
L1.TabSpaceAfter = 0.5f;
L1.TextPosition = 0.5f;
L1.StartAt = 4;
L1.NumberSufix = "Chapter";
L1.NumberPrefix = "No.";
L1.NoRestartByHigher = false;
L1.UsePrevLevelPattern = false;
L2.CharacterFormat.FontName = "Arial";

// Create list style 2
l0.ParagraphFormat.LineSpacing = 10 * 1.5f;
l1.CharacterFormat.FontSize = 9;
l1.IsLegalStyleNumbering = true;
l1.PatternType = ListPatternType.Arabic;
l1.FollowCharacter = FollowCharacterType.Nothing;
l1.BulletCharacter = "\x006e";
l1.NumberAlignment = ListNumberAlignment.Left;
l1.NumberPosition = -10;
l1.TabSpaceAfter = 0.5f;
l1.TextPosition = 0.5f;
l1.StartAt = 4;
l1.NumberSufix = "Chapter";
l1.NumberPrefix = "No.";
l1.NoRestartByHigher = false;
l1.UsePrevLevelPattern = false;
l1.CreatePictureBullet();
l2.CharacterFormat.FontName = "Arial";

//Add 'ListLevel.Equals' to compare whether two ListLevels are consistent.
bool r0 = L0.Equals(l0);
bool r1 = L1.Equals(l1);
bool r2 = L2.Equals(l2);

// Create a new Document object.
Document document = new Document();

//Add a section
Section sec = document.AddSection();
Spire.Doc.Documents.Paragraph paragraph = sec.AddParagraph();

//Create list style         
ListStyle listStyle = document.Styles.Add(ListType.Bulleted, "bulletList");
ListLevelCollection Levels = listStyle.ListRef.Levels;
Levels[0].CreatePictureBullet();
      
Levels[0].PictureBullet.LoadImage(@"logo.jpg");
Levels[1].CreatePictureBullet();
        
Levels[1].PictureBullet.LoadImage(@"py.jpg");

//Add paragraph and apply the list style
paragraph = sec.AddParagraph();
paragraph.AppendText("List Item 1");
          
paragraph.ListFormat.ApplyStyle(listStyle);
paragraph = sec.AddParagraph();
paragraph.AppendText("List Item 1.1");
          
paragraph.ListFormat.ApplyStyle(listStyle);
paragraph.ListFormat.ListLevelNumber = 1;

//DeletePictureBullet
Levels[0].DeletePictureBullet();

//Save doc file.
document.SaveToFile(@"out.docx", FileFormat.Docx);
document.Close();

// Create a new Document object.
Document document = new Document();

//Add a section
Section sec = document.AddSection();
Spire.Doc.Documents.Paragraph paragraph = sec.AddParagraph();

//Create listTemplate1
ListTemplate template = ListTemplate.BulletDefault;
ListDefinitionReference listRef = document.ListReferences.Add(template);

//Create listTemplate2
ListTemplate template1 = ListTemplate.NumberDefault;
ListDefinitionReference listRef1 = document.ListReferences.Add(template1);
listRef1.Levels[2].StartAt = 4;
int levelcount = listRef.Levels.Count;

//Add paragraph and apply the list style
paragraph = sec.AddParagraph();
paragraph.AppendText("List Item 1");
           
paragraph.ListFormat.ApplyListRef(listRef, 1);

paragraph = sec.AddParagraph();
paragraph.AppendText("List Item 2");
           
paragraph.ListFormat.ApplyListRef(listRef, 2);

//Add paragraph and apply the list style
paragraph = sec.AddParagraph();
paragraph.AppendText("List Item 3");
          
paragraph.ListFormat.ApplyListRef(listRef1, 1);

paragraph = sec.AddParagraph();
paragraph.AppendText("List Item 4");
          
paragraph.ListFormat.ApplyListRef(listRef1, 2);
//Save doc file.
document.SaveToFile("out.docx", FileFormat.Docx);
document.Close();

ListStyle listStyle = document.Styles.Add(ListType.Numbered, "levelstyle");
listStyle.IsCustomStyle = true;
listStyle.CharacterFormat.FontName = "Trebuchet MS";
ListLevelCollection levels = listStyle.ListRef.Levels;
levels[0].PatternType = ListPatternType.Arabic;
levels[0].StartAt = 1;
levels[0].CharacterFormat.FontName = "Trebuchet MS";

ListStyle numberList2 = document.Styles.Add(ListType.Numbered, "Numbered2");
ListLevelCollection Levels = numberList2.ListRef.Levels;
Levels[0].StartAt = 10;

Microsoft.Win32.Registry >= 4.5.0
System.Drawing.Common >= 4.7.2
System.Security.Permissions >= 4.7.0
System.Text.Encoding.CodePages >= 4.5.0
System.Security.Cryptography.Pkcs >= 4.7.0
System.Security.Cryptography.Xml >=4.7.1
HarfBuzzSharp >=8.3.0.1

Microsoft.Win32.Registry >= 5.0.0
System.Drawing.Common >= 6.0.0
System.Security.Permissions >= 6.0.0
System.Text.Encoding.CodePages >= 6.0.0
System.Security.Cryptography.Pkcs >= 6.0.5
System.Security.Cryptography.Xml >= 6.0.2
HarfBuzzSharp >=8.3.0.1

HTMLOptions options = new HTMLOptions();
options.isSaveComment(true);

PdfToSvgConverter converter = new PdfToSvgConverter(inputFile);
converter.SvgOptions.ScaleX = (float)0.5;
converter.SvgOptions.ScaleY = (float)0.5;
converter.Convert(outputFile);

sheet.Range["D2"].Formula = "=FORMULATEXT(B2)";

sheet.Range["B2"].Formula = "=PDURATION(2.5%,2000,2200)";