PM> Install-Package Spire.XLS

using Spire.Xls;
using System.Drawing;

namespace ApplySingleFontInCellRange
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Workbook object 
            Workbook workbook = new Workbook();

            //Get the first worksheet
            Worksheet sheet = workbook.Worksheets[0];

            //Set font name
            int row = 1;
            sheet.Range[row, 1].Value = "Font Name";
            sheet.Range[row, 2].Value = "Arial Black";
            sheet.Range[row, 2].Style.Font.FontName = "Arial Black";

            //Set font size
            sheet.Range[row += 2, 1].Value = "Font Size";
            sheet.Range[row, 2].Value = "15";
            sheet.Range[row, 2].Style.Font.Size = 15;

            //Set font color 
            sheet.Range[row += 2, 1].Value = "Font Color";
            sheet.Range[row, 2].Value = "Red";
            sheet.Range[row, 2].Style.Font.Color = Color.Red;

            //Make text bold
            sheet.Range[row += 2, 1].Value = "Bold";
            sheet.Range[row, 2].Value = "Bold";
            sheet.Range[row, 2].Style.Font.IsBold = true;

            //Make text italic 
            sheet.Range[row += 2, 1].Value = "Italic";
            sheet.Range[row, 2].Value = "Italic";
            sheet.Range[row, 2].Style.Font.IsItalic = true;

            //Underline text
            sheet.Range[row += 2, 1].Value = "Underline";
            sheet.Range[row, 2].Value = "Underline";
            sheet.Range[row, 2].Style.Font.Underline = FontUnderlineType.Single;

            //Strikethrough text 
            sheet.Range[row += 2, 1].Value = "Strikethrough ";
            sheet.Range[row, 2].Value = "Strikethrough ";
            sheet.Range[row, 2].Style.Font.IsStrikethrough = true;

            //Auto fit column width
            sheet.AllocatedRange.AutoFitColumns();
       
            //Save the workbook to an Excel file
            workbook.SaveToFile("ApplySingleFontInCell.xlsx", ExcelVersion.Version2016);
        }
    }
}

Imports Spire.Xls
Imports System.Drawing
 
Namespace ApplySingleFontInCellRange
    Class Program
        Shared  Sub Main(ByVal args() As String)
            'Create a Workbook object 
            Dim workbook As Workbook =  New Workbook() 
 
            'Get the first worksheet
            Dim sheet As Worksheet =  workbook.Worksheets(0) 
 
            'Set font name
            Dim row As Integer =  1 
            sheet.Range(row, 1).Value = "Font Name"
            sheet.Range(row, 2).Value = "Arial Black"
            sheet.Range(row, 2).Style.Font.FontName = "Arial Black"
 
            'Set font size
            sheet.Range(row += 2, 1).Value = "Font Size"
            sheet.Range(row, 2).Value = "15"
            sheet.Range(row, 2).Style.Font.Size = 15
 
            'Set font color 
            sheet.Range(row += 2, 1).Value = "Font Color"
            sheet.Range(row, 2).Value = "Red"
            sheet.Range(row, 2).Style.Font.Color = Color.Red
 
            'Make text bold
            sheet.Range(row += 2, 1).Value = "Bold"
            sheet.Range(row, 2).Value = "Bold"
            sheet.Range(row, 2).Style.Font.IsBold = True
 
            'Make text italic 
            sheet.Range(row += 2, 1).Value = "Italic"
            sheet.Range(row, 2).Value = "Italic"
            sheet.Range(row, 2).Style.Font.IsItalic = True
 
            'Underline text
            sheet.Range(row += 2, 1).Value = "Underline"
            sheet.Range(row, 2).Value = "Underline"
            sheet.Range(row, 2).Style.Font.Underline = FontUnderlineType.Single
 
            'Strikethrough text 
            sheet.Range(row += 2, 1).Value = "Strikethrough "
            sheet.Range(row, 2).Value = "Strikethrough "
            sheet.Range(row, 2).Style.Font.IsStrikethrough = True
 
            'Auto fit column width
            sheet.AllocatedRange.AutoFitColumns()
 
            'Save the workbook to an Excel file
            workbook.SaveToFile("ApplySingleFontInCell.xlsx", ExcelVersion.Version2016)
        End Sub
    End Class
End Namespace

using Spire.Xls;

namespace ApplyMultipleFontsInACell
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Workbook object
            Workbook workbook = new Workbook();

            //Get the first worksheet
            Worksheet sheet = workbook.Worksheets[0];

            //Create a font
            ExcelFont font1 = workbook.CreateFont();
            font1.FontName = "Arial Black";
            font1.KnownColor = ExcelColors.LightBlue;
            font1.IsBold = true;
            font1.Size = 13;

            //Create another font
            ExcelFont font2 = workbook.CreateFont();
            font2.KnownColor = ExcelColors.Red;
            font2.IsBold = true;
            font2.IsItalic = true;
            font2.FontName = "Algerian";
            font2.Size = 15;

            //Returns a RichText object from a specified cell
            RichText richText = sheet.Range["A1"].RichText;

            //Set the text of RichText object
            richText.Text = "Buy One, Get One Free";

            //Apply the first font to specified range of characters
            richText.SetFont(0, 16, font1);

            //Apply the second font to specified range of characters
            richText.SetFont(17, 21, font2);

            //Set column width
            sheet.Columns[0].ColumnWidth = 33;

            //Save the workbook to an Excel file
            workbook.SaveToFile("ApplyMultipleFonts.xlsx", ExcelVersion.Version2016);
        }
    }
}

Imports Spire.Xls
 
Namespace ApplyMultipleFontsInACell
    Class Program
        Shared  Sub Main(ByVal args() As String)
            'Create a Workbook object
            Dim workbook As Workbook =  New Workbook() 
 
            'Get the first worksheet
            Dim sheet As Worksheet =  workbook.Worksheets(0) 
 
            'Create a font
            Dim font1 As ExcelFont =  workbook.CreateFont() 
            font1.FontName = "Arial Black"
            font1.KnownColor = ExcelColors.LightBlue
            font1.IsBold = True
            font1.Size = 13
 
            'Create another font
            Dim font2 As ExcelFont =  workbook.CreateFont() 
            font2.KnownColor = ExcelColors.Red
            font2.IsBold = True
            font2.IsItalic = True
            font2.FontName = "Algerian"
            font2.Size = 15
 
            'Returns a RichText object from a specified cell
            Dim richText As RichText =  sheet.Range("A1").RichText 
 
            'Set the text of RichText object
            richText.Text = "Buy One, Get One Free"
 
            'Apply the first font to specified range of characters
            richText.SetFont(0, 16, font1)
 
            'Apply the second font to specified range of characters
            richText.SetFont(17, 21, font2)
 
            'Set column width
            sheet.Columns(0).ColumnWidth = 33
 
            'Save the workbook to an Excel file
            workbook.SaveToFile("ApplyMultipleFonts.xlsx", ExcelVersion.Version2016)
        End Sub
    End Class
End Namespace

using Spire.Xls;
using System.Drawing;

namespace ApplyFontToCellRange
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Workbook object
            Workbook workbook = new Workbook();

            //Load a sample Excel file
            workbook.LoadFromFile(@"C:\Users\Administrator\Desktop\sample.xlsx");

            //Get the first worksheet
            Worksheet sheet = workbook.Worksheets[0];

            //Create a CellStyle object
            CellStyle fontStyle = workbook.Styles.Add("headerFontStyle");

            //Set the font color, size and style
            fontStyle.Font.Color = Color.White;
            fontStyle.Font.IsBold = true;
            fontStyle.Font.Size = 12;
            fontStyle.HorizontalAlignment = HorizontalAlignType.Center;

            //Create a CellStyleFlag object, setting the FontColor, FontBold, FontSize and HorizontalAlignment properties to true
            CellStyleFlag flag = new CellStyleFlag();
            flag.FontColor = true;
            flag.FontBold = true;
            flag.FontSize = true;
            flag.HorizontalAlignment = true;

            //Apply the cell style to header row 
            sheet.Range[1, 1, 1, 8].ApplyStyle(fontStyle, flag);

            //Apply the cell style to the whole worksheet
            //sheet.ApplyStyle(fontStyle);

            //Save the workbook to another Excel file
            workbook.SaveToFile("ApplyFontToCellRange.xlsx", ExcelVersion.Version2016);
        }
    }
}

Imports Spire.Xls
Imports System.Drawing
 
Namespace ApplyFontToCellRange
    Class Program
        Shared  Sub Main(ByVal args() As String)
            'Create a Workbook object
            Dim workbook As Workbook =  New Workbook() 
 
            'Load a sample Excel file
            workbook.LoadFromFile("C:\Users\Administrator\Desktop\sample.xlsx")
 
            'Get the first worksheet
            Dim sheet As Worksheet =  workbook.Worksheets(0) 
 
            'Create a CellStyle object
            Dim fontStyle As CellStyle =  workbook.Styles.Add("headerFontStyle") 
 
            'Set the font color, size and style
            fontStyle.Font.Color = Color.White
            fontStyle.Font.IsBold = True
            fontStyle.Font.Size = 12
            fontStyle.HorizontalAlignment = HorizontalAlignType.Center
 
            'Create a CellStyleFlag object, setting the FontColor, FontBold, FontSize and HorizontalAlignment properties to true
            Dim flag As CellStyleFlag =  New CellStyleFlag() 
            flag.FontColor = True
            flag.FontBold = True
            flag.FontSize = True
            flag.HorizontalAlignment = True
 
            'Apply the cell style to header row 
            sheet.Range(1, 1, 1, 8).ApplyStyle(fontStyle, flag)
 
            'Apply the cell style to the whole worksheet
            'sheet.ApplyStyle(fontStyle);
 
            'Save the workbook to another Excel file
            workbook.SaveToFile("ApplyFontToCellRange.xlsx", ExcelVersion.Version2016)
        End Sub
    End Class
End Namespace

PM> Install-Package Spire.XLS

using System.Drawing;
using Spire.Xls;

namespace CellBackground
{
    class Program
    {
        static void Main(string[] args)
        {
            //Instantiate a Workbook object
            Workbook workbook = new Workbook();

            //Load a sample Excel file
            workbook.LoadFromFile(@"C:\Users\Administrator\Desktop\data.xlsx");

            //Get the first worksheet
            Worksheet worksheet = workbook.Worksheets[0];

            //Set background color for Range ["A1:E1"] and ["A2:A10"]
            worksheet.Range["A1:E1"].Style.Color = Color.MediumSeaGreen;
            worksheet.Range["A2:A10"].Style.Color = Color.LightYellow;

            //Set background color for cell E6
            worksheet.Range["E6"].Style.Color = Color.Red;

            //Set pattern style for Range ["B4:D5"]
            worksheet.Range["B4:D5"].Style.FillPattern = ExcelPatternType.Percent125Gray;

            //Save the result file 
            workbook.SaveToFile("CellBackground.xlsx", ExcelVersion.Version2013);
        }

    }
}

Imports System.Drawing
Imports Spire.Xls

Namespace CellBackground
    Class Program
        Private Shared Sub Main(ByVal args As String())

            'Instantiate a Workbook object
            Dim workbook As Workbook = New Workbook()

            'Load a sample Excel file
            workbook.LoadFromFile("C:\Users\Administrator\Desktop\data.xlsx")

            'Get the first worksheet
            Dim worksheet As Worksheet = workbook.Worksheets(0)

            'Set background color for Range["A1:E1"] and ["A2:A10"]
            worksheet.Range("A1:E1").Style.Color = Color.MediumSeaGreen
            worksheet.Range("A2:A10").Style.Color = Color.LightYellow

            'Set background color for cell E6
            worksheet.Range("E6").Style.Color = Color.Red

            'Set pattern style for Range["B4:D5"]
            worksheet.Range("B4:D5").Style.FillPattern = ExcelPatternType.Percent125Gray

            'Save the result file 
            workbook.SaveToFile("CellBackground.xlsx", ExcelVersion.Version2013)
        End Sub
    End Class
End Namespace

PM> Install-Package Spire.XLS

using Spire.Xls;

namespace AddTextHyperlinks
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Workbook instance
            Workbook workbook = new Workbook();

            //Get the first worksheet
            Worksheet sheet = workbook.Worksheets[0];

            //Add a text hyperlink that leads to a webpage
            CellRange cell1 = sheet.Range["B3"];
            HyperLink urlLink = sheet.HyperLinks.Add(cell1);
            urlLink.Type = HyperLinkType.Url;
            urlLink.TextToDisplay = "Link to a website";
            urlLink.Address = "https://www.google.com/";

            //Add a text hyperlink that leads to an email address
            CellRange cell2 = sheet.Range["E3"];
            HyperLink mailLink = sheet.HyperLinks.Add(cell2);
            mailLink.Type = HyperLinkType.Url;
            mailLink.TextToDisplay = "Link to an email address";
            mailLink.Address = "mailto:abc@outlook.com";

            //Add a text hyperlink that leads to an external file
            CellRange cell3 = sheet.Range["B7"];
            HyperLink fileLink = sheet.HyperLinks.Add(cell3);
            fileLink.Type = HyperLinkType.File;
            fileLink.TextToDisplay = "Link to an external file";
            fileLink.Address = "C:\\Users\\Administrator\\Desktop\\Report.xlsx";

            //Add a text hyperlink that leads to a cell in another sheet
            CellRange cell4 = sheet.Range["E7"];
            HyperLink linkToSheet = sheet.HyperLinks.Add(cell4);
            linkToSheet.Type = HyperLinkType.Workbook;
            linkToSheet.TextToDisplay = "Link to a cell in sheet2";
            linkToSheet.Address = "Sheet2!B5";

            //Add a text hyperlink that leads to a UNC address
            CellRange cell5 = sheet.Range["B11"];
            HyperLink uncLink = sheet.HyperLinks.Add(cell5);
            uncLink.Type = HyperLinkType.Unc;
            uncLink.TextToDisplay = "Link to a UNC address";
            uncLink.Address = "\\\\192.168.0.121";

            //Autofit column width
            sheet.AutoFitColumn(2);
            sheet.AutoFitColumn(5);

            //Save the result file
            workbook.SaveToFile("AddTextHyperlinks.xlsx", ExcelVersion.Version2013);
        }
    }
}

Imports Spire.Xls

Namespace AddTextHyperlinks
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            'Create a Workbook instance
            Dim workbook As Workbook = New Workbook()

            'Get the first worksheet
            Dim sheet As Worksheet = workbook.Worksheets(0)

            'Add a text hyperlink that leads to a webpage
            Dim cell1 As CellRange = sheet.Range("B3")
            Dim urlLink As HyperLink = sheet.HyperLinks.Add(cell1)
            urlLink.Type = HyperLinkType.Url
            urlLink.TextToDisplay = "Link to a website"
            urlLink.Address = "https://www.google.com/"

            'Add a text hyperlink that leads to an email address
            Dim cell2 As CellRange = sheet.Range("E3")
            Dim mailLink As HyperLink = sheet.HyperLinks.Add(cell2)
            mailLink.Type = HyperLinkType.Url
            mailLink.TextToDisplay = "Link to an email address"
            mailLink.Address = "mailto:abc@outlook.com"

            'Add a text hyperlink that leads to an external file
            Dim cell3 As CellRange = sheet.Range("B7")
            Dim fileLink As HyperLink = sheet.HyperLinks.Add(cell3)
            fileLink.Type = HyperLinkType.File
            fileLink.TextToDisplay = "Link to an external file"
            fileLink.Address = "C:\\Users\\Administrator\\Desktop\\Report.xlsx"

            'Add a text hyperlink that leads to a cell in another sheet
            Dim cell4 As CellRange = sheet.Range("E7")
            Dim linkToSheet As HyperLink = sheet.HyperLinks.Add(cell4)
            linkToSheet.Type = HyperLinkType.Workbook
            linkToSheet.TextToDisplay = "Link to a cell in sheet2"
            linkToSheet.Address = "Sheet2!B5"

            'Add a text hyperlink that leads to a UNC address
            Dim cell5 As CellRange = sheet.Range("B11")
            Dim uncLink As HyperLink = sheet.HyperLinks.Add(cell5)
            uncLink.Type = HyperLinkType.Unc
            uncLink.TextToDisplay = "Link to a UNC address"
            uncLink.Address = "\\\\192.168.0.121"

            'Autofit column width
            sheet.AutoFitColumn(2)
            sheet.AutoFitColumn(5)

            'Save the result file
            workbook.SaveToFile("AddTextHyperlinks.xlsx", ExcelVersion.Version2013)
        End Sub
    End Class
End Namespace

using Spire.Xls;

namespace AddImageHyperlinks
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Workbook instance
            Workbook workbook = new Workbook();
            //Get the first worksheet 
            Worksheet sheet = workbook.Worksheets[0];

            //Insert an image into the worksheet
            ExcelPicture picture = sheet.Pictures.Add(5, 3, "Logo.png");
            sheet.Columns[2].ColumnWidth = 11;
            sheet.Rows[4].RowHeight = 60;

            //Add a hyperlink to the image 
            picture.SetHyperLink("https://www.e-iceblue.com", true);
            
            //Save the result file
            workbook.SaveToFile("AddImageHyperlink.xlsx", ExcelVersion.Version2013);
        }
    }
}

Imports Spire.Xls

Namespace AddImageHyperlinks
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            'Create a Workbook instance
            Dim workbook As Workbook = New Workbook()
            'Get the first worksheet 
            Dim sheet As Worksheet = workbook.Worksheets(0)

            'Insert an image into the worksheet
            Dim picture As ExcelPicture = sheet.Pictures.Add(5, 3, "Logo.png")
            sheet.Columns(2).ColumnWidth = 11
            sheet.Rows(4).RowHeight = 60

            'Add a hyperlink to the image 
            picture.SetHyperLink("https://www.e-iceblue.com", True)

            'Save the result file
            workbook.SaveToFile("AddImageHyperlink.xlsx", ExcelVersion.Version2013)
        End Sub
    End Class
End Namespace

using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;

namespace ExtractImages
{
    class Program
    {
        static void Main(string[] args)
        {
            // Initialize a Document object
            Document document = new Document();

            // Load the Word file
            document.LoadFromFile("C:\\Users\\Administrator\\Desktop\\input.docx");

            // Counter for image files
            int index = 0;

            // Loop through each section in the document
            foreach (Section section in document.Sections)
            {
                // Loop through paragraphs in the section
                foreach (Paragraph paragraph in section.Paragraphs)
                {
                    // Loop through objects in the paragraph
                    foreach (DocumentObject docObject in paragraph.ChildObjects)
                    {
                        // Check if the object is an image
                        if (docObject.DocumentObjectType == DocumentObjectType.Picture)
                        {
                            // Save the image as a PNG file
                            DocPicture picture = docObject as DocPicture;
                            picture.Image.Save(string.Format("output/image_{0}.png", index), System.Drawing.Imaging.ImageFormat.Png);
                            index++;
                        }
                    }
                }
            }

            // Dispose resources
            document.Dispose();
        }
    }
}

PM> Install-Package Spire.Doc

using Spire.Doc;
using Spire.Doc.Documents;

namespace AddBookmarkToParagraph
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create a Document object
            Document doc = new Document();

            // Load a Word file
            doc.LoadFromFile("C:\\Users\\Administrator\\Desktop\\input.docx");

            // Get a specified paragraph
            Paragraph paragraph = doc.Sections[0].Paragraphs[2];

            // Create a bookmark start
            BookmarkStart start = paragraph.AppendBookmarkStart("myBookmark");

            // Insert it at the beginning of the paragraph
            paragraph.Items.Insert(0, start);

            // Append a bookmark end at the end of the paragraph
            paragraph.AppendBookmarkEnd("myBookmark");

            // Save the file
            doc.SaveToFile("AddBookmarkToParagraph.docx", FileFormat.Docx2019);

            // Dispose resources
            doc.Dispose();
        }
    }
}

using Spire.Doc;
using Spire.Doc.Documents;

namespace AddBookmarkToText
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create a Document object
            Document doc = new Document();

            // Load a Word file
            doc.LoadFromFile("C:\\Users\\Administrator\\Desktop\\input.docx");

            // Specify the string to find
            string stringToFind = "Privacy Policy";

            // Find the selected text from the document
            TextSelection[] finds = doc.FindAllString(stringToFind, false, true);
            TextSelection specificText = finds[1];

            // Find the paragraph where the text is located
            Paragraph para = specificText.GetAsOneRange().OwnerParagraph;

            // Get the index of the text in the paragraph
            int index = para.ChildObjects.IndexOf(specificText.GetAsOneRange());

            // Create a bookmark start
            BookmarkStart start = para.AppendBookmarkStart("myBookmark");

            // Insert the bookmark start at the index position
            para.ChildObjects.Insert(index, start);

            // Create a bookmark end
            BookmarkEnd end = para.AppendBookmarkEnd("myBookmark");

            // Insert the bookmark end at the end of the selected text
            para.ChildObjects.Insert(index + 2, end);

            // Save the document to another file
            doc.SaveToFile("AddBookmarkToText.docx", FileFormat.Docx2019);

            // Dispose resources
            doc.Dispose();
        }
    }
}

using Spire.Doc;

namespace RemoveBookmarks
{
    class Program
    {
        static void Main(string[] args)
        {

            // Create a Document object
            Document doc = new Document();

            // Load a Word file
            doc.LoadFromFile("C:\\Users\\Administrator\\Desktop\\Bookmarks.docx");

            // Get a specific bookmark by its index
            Bookmark bookmark = doc.Bookmarks[0];

            // Remove the bookmark
            doc.Bookmarks.Remove(bookmark);

            // Remove all bookmarks at once
            // doc.Bookmarks.Clear();

            // Save the document.
            doc.SaveToFile("RemoveBookmark.docx", FileFormat.Docx2019);

            // Dispose resources
            doc.Dispose();
        }
    }
}

PM> Install-Package Spire.Doc

using Spire.Doc;
using Spire.Doc.Documents;

namespace ModifyText
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create a new document object
            Document document = new Document();

            // Load an existing Word file
            document.LoadFromFile("C:\\Users\\Administrator\\Desktop\\input.docx");

            // Get a specific section
            Section section = document.Sections[0];

            // Get a specific paragraph
            Paragraph paragraph = section.Paragraphs[0];

            // Modify the text of the paragraph 
            paragraph.Text = "Updated Title";

            // Save the document to a different Word file
            document.SaveToFile("ModifyText.docx", FileFormat.Docx);

            // Dispose resource
            document.Dispose();
        }
    }
}

using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
using System.Drawing;

namespace ChangeTextFont
{
    class Program
    {
        static void Main(string[] args)
        {

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

            // Load an existing Word file
            document.LoadFromFile("C:\\Users\\Administrator\\Desktop\\input.docx");

            // Get a specific section
            Section section = document.Sections[0];

            // Get a specific paragraph
            Paragraph paragraph = section.Paragraphs[2];

            // Iterate through the child objects in the paragraph
            for (int i = 0; i < paragraph.ChildObjects.Count; i++)
            {

                // Determine if a child object is text range
                if (paragraph.ChildObjects[i] is TextRange)
                {
                    // Get a specific text range
                    TextRange textRange = (TextRange)paragraph.ChildObjects[i];

                    // Reset font name for it
                    textRange.CharacterFormat.FontName = "Corbel Light";

                    // Reset font size for it
                    textRange.CharacterFormat.FontSize = 11;

                    // Reset text color for it
                    textRange.CharacterFormat.TextColor = Color.Blue;

                    // Apply italic to the text range 
                    textRange.CharacterFormat.Italic = true;
                }
            }

            // Save the document to a different Word file
            document.SaveToFile("ChangeFont.docx", FileFormat.Docx);

            // Dispose resource
            document.Dispose();
        }
    }
}

using Spire.Doc;
using Spire.Doc.Documents;

namespace AddNewElementsToWord
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create a new document object
            Document document = new Document();

            // Load an existing Word file
            document.LoadFromFile("C:\\Users\\Administrator\\Desktop\\input.docx");

            // Get the last section
            Section lastSection = document.LastSection;

            // Add a paragraph to the section
            Paragraph paragraph = lastSection.AddParagraph();

            // Add text to the paragraph
            paragraph.AppendText("This text and the image shown below are added programmatically using C# and Spire.Doc for .NET.");

            // Add an image to the paragraph
            paragraph.AppendPicture("C:\\Users\\Administrator\\Desktop\\logo.png");

            // Create a paragraph style
            ParagraphStyle style = new ParagraphStyle(document);
            style.Name = "FontStyle";
            style.CharacterFormat.FontName = "Times New Roman";
            style.CharacterFormat.FontSize = 12;
            document.Styles.Add(style);

            // Apply the style to the paragraph
            paragraph.ApplyStyle(style.Name);

            // Save the document to a different Word file
            document.SaveToFile("AddNewElements.docx", FileFormat.Docx);

            // Dispose resource
            document.Dispose();
        }
    }
}

using Spire.Doc;

namespace RemoveParagraphs
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create a new document object
            Document document = new Document();

            // Load an existing Word file
            document.LoadFromFile("C:\\Users\\Administrator\\Desktop\\input.docx");

            // Get a specific section
            Section section = document.Sections[0];

            // Remove a specific paragraph
            section.Paragraphs.RemoveAt(0);

            // Save the document to a different Word file
            document.SaveToFile("RemoveParagraph.docx", FileFormat.Docx);

            // Dispose resource
            document.Dispose();
        }
    }
}