PM> Install-Package Spire.Doc

using Spire.Doc;

namespace BuiltinDocumentProperties
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Document instance
            Document document = new Document();
            //Load a Word document
            document.LoadFromFile("Sample.docx");

            //Add built-in document properties to the document
            BuiltinDocumentProperties standardProperties = document.BuiltinDocumentProperties;
            standardProperties.Title = "Add Document Properties";
            standardProperties.Subject = "C# Example";
            standardProperties.Author = "James";
            standardProperties.Company = "Eiceblue";
            standardProperties.Manager = "Michael";
            standardProperties.Category = "Document Manipulation";
            standardProperties.Keywords = "C#, Word, Document Properties";
            standardProperties.Comments = "This article shows how to add document properties";

            //Save the result document
            document.SaveToFile("StandardDocumentProperties.docx", FileFormat.Docx2013);
        }
    }
}

Imports Spire.Doc

Namespace BuiltinDocumentProperties
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            'Create a Document instance
            Dim document As Document = New Document()
            'Load a Word document
            document.LoadFromFile("Sample.docx")

            'Add built-in document properties to the document
            Dim standardProperties As BuiltinDocumentProperties = document.BuiltinDocumentProperties
            standardProperties.Title = "Add Document Properties"
            standardProperties.Subject = "C# Example"
            standardProperties.Author = "James"
            standardProperties.Company = "Eiceblue"
            standardProperties.Manager = "Michael"
            standardProperties.Category = "Document Manipulation"
            standardProperties.Keywords = "C#, Word, Document Properties"
            standardProperties.Comments = "This article shows how to add document properties"

            'Save the result document
            document.SaveToFile("StandardDocumentProperties.docx", FileFormat.Docx2013)
        End Sub
    End Class
End Namespace

using Spire.Doc;
using System;

namespace CustomDocumentProperties
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Document instance
            Document document = new Document();
            //Load a Word document
            document.LoadFromFile("Sample.docx");

            //Add custom document properties to the document
            CustomDocumentProperties customProperties = document.CustomDocumentProperties;
            customProperties.Add("Document ID", 1);
            customProperties.Add("Authorized", true);
            customProperties.Add("Authorized By", "John Smith");
            customProperties.Add("Authorized Date", DateTime.Today);

            //Save the result document
            document.SaveToFile("CustomDocumentProperties.docx", FileFormat.Docx2013);
        }
    }
}

Imports Spire.Doc

Namespace CustomDocumentProperties
    Friend Class Program
        Private Shared Sub Main(ByVal args As String())
            'Create a Document instance
            Dim document As Document = New Document()
            'Load a Word document
            document.LoadFromFile("Sample.docx")

            'Add custom document properties to the document
            Dim customProperties As CustomDocumentProperties = document.CustomDocumentProperties
            customProperties.Add("Document ID", 1)
            customProperties.Add("Authorized", True)
            customProperties.Add("Authorized By", "John Smith")
            customProperties.Add("Authorized Date", Date.Today)

            'Save the result document
            document.SaveToFile("CustomDocumentProperties.docx", FileFormat.Docx2013)
        End Sub
    End Class
End Namespace

PM> Install-Package Spire.Doc

using Spire.Doc;

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

            //Load the original Word document
            document.LoadFromFile("Doc1.docx", FileFormat.Docx);

            //Insert another Word document entirely to the original document
            document.InsertTextFromFile("Doc2.docx", FileFormat.Docx);

            //Save the result document
            document.SaveToFile("MergedWord.docx", FileFormat.Docx);
        }
    }
}

Imports Spire.Doc

Namespace MergeWord
    Class Program
        Private Shared Sub Main(ByVal args() As String)
            'Create a Document instance 
            Dim document As Document = New Document

            'Load the original Word document
            document.LoadFromFile("Doc1.docx", FileFormat.Docx)

            'Insert another Word document entirely to the original document
            document.InsertTextFromFile("Doc2.docx", FileFormat.Docx)

            'Save the result document
            document.SaveToFile("MergedWord.docx", FileFormat.Docx)
        End Sub
    End Class
End Namespace

using Spire.Doc;

namespace MergeWord
{
    class Program
    {
        static void Main(string[] args)
        {
            //Load two Word documents
            Document doc1 = new Document("Doc1.docx");
            Document doc2 = new Document("Doc2.docx");

            //Loop through the second document to get all the sections
            foreach (Section section in doc2.Sections)
            {

                //Loop through the sections of the second document to get their child objects
                foreach (DocumentObject obj in section.Body.ChildObjects)
                {

                    // Get the last section of the first document
                     Section lastSection = doc1.LastSection;

                    //Add all child objects to the last section of the first document
                    lastSection.Body.ChildObjects.Add(obj.Clone());
                }
            }

            // Save the result document
            doc1.SaveToFile("MergeDocuments.docx", FileFormat.Docx);
        }
    }
} 

Imports Spire.Doc

Namespace MergeWord
    Class Program
        Private Shared Sub Main(ByVal args() As String)
            'Load two Word documents
            Dim doc1 As Document = New Document("Doc1.docx")
            Dim doc2 As Document = New Document("Doc2.docx")

            'Loop through the second document to get all the sections
            For Each section As Section In doc2.Sections

                'Loop through the sections of the second document to get their child objects
                For Each obj As DocumentObject In section.Body.ChildObjects

                    ' Get the last section of the first document
                    Dim lastSection As Section = doc1.LastSection

                    'Add all child objects to the last section of the first document
                    lastSection.Body.ChildObjects.Add(obj.Clone)
                Next
            Next

            ' Save the result document
            doc1.SaveToFile("MergeDocuments.docx", FileFormat.Docx)
        End Sub
    End Class
End Namespace

PM> Install-Package Spire.Doc

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

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

            // Add a section
            Section section = document.AddSection();

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

            // Add text and mail merge fields to the paragraph
            paragraph.AppendText("Full Name: ");
            paragraph.AppendField("Name", FieldType.FieldMergeField);
            paragraph.AppendBreak(BreakType.LineBreak);
            paragraph.AppendText("Email Address: ");
            paragraph.AppendField("Email", FieldType.FieldMergeField);
            paragraph.AppendBreak(BreakType.LineBreak);
            paragraph.AppendText("Avatar: ");
            paragraph.AppendField("Image:Avatar", FieldType.FieldMergeField);

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

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

using Spire.Doc;
using Spire.Doc.Reporting;
using System.Drawing;

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

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

            // Specify field names
            String[] fieldNames = {

                "Name",
                "Email",
                "Avatar"
            };

            // Specify values that'll be used to fill the fields
            String[] fieldValues = {

                "John Smith",
                "john.smith@e-iceblue.com",
                "C:\\Users\\Administrator\\Desktop\\avatar.png"
            };

            // Register an event which occurs when merging the image filed
            document.MailMerge.MergeImageField += new MergeImageFieldEventHandler(MailMerge_MergeImageField);

            // Mail merge data to the document  
            document.MailMerge.Execute(fieldNames, fieldValues);

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

            // Dispose resources
            document.Dispose();
        }

        // Fill an image field with a picture
        private static void MailMerge_MergeImageField(object sender, MergeImageFieldEventArgs field)
        {
            string filePath = field.FieldValue as string;

            if (!string.IsNullOrEmpty(filePath))
            {
                field.Image = Image.FromFile(filePath);
            }
        }
    }
}

using Spire.Doc;
using System.Data;

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

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

            // Load a template Word document
            document.LoadFromFile("C:\\Users\\Administrator\\Desktop\\Template.docx");

            // Create a datatable, specifying table name
            DataTable table = new DataTable("Employee");

            // Add sample data to table
            table.Columns.Add("Name");
            table.Columns.Add("Address");
            table.Columns.Add("City");
            table.Rows.Add("John Doe", "123 Main St", "New York");
            table.Rows.Add("Jane Smith", "456 Elm St", "Los Angeles");
            table.Rows.Add("Bob Johnson", "789 Oak St", "Chicago");

            // Mail merge within the region
            document.MailMerge.ExecuteWidthRegion(table);

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

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

using Spire.Doc;
using System.Collections;
using System.Data;

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

            // Load a template Word document
            document.LoadFromFile("C:\\Users\\Administrator\\Desktop\\Template.docx");

            // Read data from an XML file to a DataSet object
            DataSet dataSet = new DataSet();
            dataSet.ReadXml("C:\\Users\\Administrator\\Desktop\\Orders.xml");

            // Create a List object to store the merge field information
            List list = new List();

            // Create two DicitionaryEntry objects and add them to the list (each object specifies the merge field name and associated expression)
            DictionaryEntry dictionaryEntry = new DictionaryEntry("Customer", string.Empty);
            list.Add(dictionaryEntry);

            dictionaryEntry = new DictionaryEntry("Order", "Customer_Id = %Customer.Customer_Id%");
            list.Add(dictionaryEntry);

            // Perform the mail merge operation with the nested region
            document.MailMerge.ExecuteWidthNestedRegion(dataSet, list);

            // Save to file
            document.SaveToFile("MailMergeWithNestedRegions.docx", FileFormat.Docx2019);

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

PM> Install-Package Spire.Doc

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

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

            //Add a section
            Section section = doc.AddSection();

            //Set the page margins
            section.PageSetup.Margins.All = 40f;

            //Add a paragraph as title
            Paragraph titleParagraph = section.AddParagraph();
            titleParagraph.AppendText("Introduction of Spire.Doc for .NET");

            //Add two paragraphs as body
            Paragraph bodyParagraph_1 = section.AddParagraph();
            bodyParagraph_1.AppendText("Spire.Doc for .NET is a professional Word.NET library specifically designed " +
                "for developers to create, read, write, convert, compare and print Word documents on any.NET platform " +
                "(.NET Framework, .NET Core, .NET Standard, Xamarin & Mono Android) with fast and high-quality performance.");


            Paragraph bodyParagraph_2 = section.AddParagraph();
            bodyParagraph_2.AppendText("As an independent Word .NET API, Spire.Doc for .NET doesn't need Microsoft Word to " +
                         "be installed on neither the development nor target systems. However, it can incorporate Microsoft Word " +
                         "document creation capabilities into any developers' .NET applications.");

            //Create a style for title paragraph
            ParagraphStyle style1 = new ParagraphStyle(doc);
            style1.Name = "titleStyle";
            style1.CharacterFormat.Bold = true;
            style1.CharacterFormat.TextColor = Color.Purple;
            style1.CharacterFormat.FontName = "Times New Roman";
            style1.CharacterFormat.FontSize = 12;
            doc.Styles.Add(style1);
            titleParagraph.ApplyStyle("titleStyle");

            //Create a style for body paragraphs
            ParagraphStyle style2 = new ParagraphStyle(doc);
            style2.Name = "paraStyle";
            style2.CharacterFormat.FontName = "Times New Roman";
            style2.CharacterFormat.FontSize = 12;
            doc.Styles.Add(style2);
            bodyParagraph_1.ApplyStyle("paraStyle");
            bodyParagraph_2.ApplyStyle("paraStyle");

            //Set the horizontal alignment of paragraphs
            titleParagraph.Format.HorizontalAlignment = HorizontalAlignment.Center;
            bodyParagraph_1.Format.HorizontalAlignment = HorizontalAlignment.Justify;
            bodyParagraph_2.Format.HorizontalAlignment = HorizontalAlignment.Justify;

            //Set the first line indent 
            bodyParagraph_1.Format.FirstLineIndent = 30;
            bodyParagraph_2.Format.FirstLineIndent = 30;

            //Set the after spacing
            titleParagraph.Format.AfterSpacing = 10;
            bodyParagraph_1.Format.AfterSpacing = 10;

            //Save to file
            doc.SaveToFile("WordDocument.docx", FileFormat.Docx2013);
        }
    }
}

Imports Spire.Doc
Imports Spire.Doc.Documents
Imports System.Drawing
 
Namespace CreateWordDocument
    Class Program
        Shared  Sub Main(ByVal args() As String)
            'Create a Document object
            Document doc  =  New Document()
 
            'Add a section
            Dim section As Section =  doc.AddSection() 
 
            'Set the page margins
            section.PageSetup.Margins.All = 40f
 
            'Add a paragraph as title
            Dim titleParagraph As Paragraph =  section.AddParagraph() 
            titleParagraph.AppendText("Introduction of Spire.Doc for .NET")
 
            'Add two paragraphs as body
            Dim bodyParagraph_1 As Paragraph =  section.AddParagraph() 
            bodyParagraph_1.AppendText("Spire.Doc for .NET is a professional Word.NET library specifically designed " +
                "for developers to create, read, write, convert, compare and print Word documents on any.NET platform " +
                "(.NET Framework, .NET Core, .NET Standard, Xamarin & Mono Android) with fast and high-quality performance.")
 
 
            Dim bodyParagraph_2 As Paragraph =  section.AddParagraph() 
            bodyParagraph_2.AppendText("As an independent Word .NET API, Spire.Doc for .NET doesn't need Microsoft Word to " +
                         "be installed on neither the development nor target systems. However, it can incorporate Microsoft Word " +
                         "document creation capabilities into any developers' .NET applications.")
 
            'Create a style for title paragraph
            Dim style1 As ParagraphStyle =  New ParagraphStyle(doc) 
            style1.Name = "titleStyle"
            style1.CharacterFormat.Bold = True
            style1.CharacterFormat.TextColor = Color.Purple
            style1.CharacterFormat.FontName = "Times New Roman"
            style1.CharacterFormat.FontSize = 12
            doc.Styles.Add(style1)
            titleParagraph.ApplyStyle("titleStyle")
 
            'Create a style for body paragraphs
            Dim style2 As ParagraphStyle =  New ParagraphStyle(doc) 
            style2.Name = "paraStyle"
            style2.CharacterFormat.FontName = "Times New Roman"
            style2.CharacterFormat.FontSize = 12
            doc.Styles.Add(style2)
            bodyParagraph_1.ApplyStyle("paraStyle")
            bodyParagraph_2.ApplyStyle("paraStyle")
 
            'Set the horizontal alignment of paragraphs
            titleParagraph.Format.HorizontalAlignment = HorizontalAlignment.Center
            bodyParagraph_1.Format.HorizontalAlignment = HorizontalAlignment.Justify
            bodyParagraph_2.Format.HorizontalAlignment = HorizontalAlignment.Justify
 
            'Set the first line indent 
            bodyParagraph_1.Format.FirstLineIndent = 30
            bodyParagraph_2.Format.FirstLineIndent = 30
 
            'Set the after spacing
            titleParagraph.Format.AfterSpacing = 10
            bodyParagraph_1.Format.AfterSpacing = 10
 
            'Save to file
            doc.SaveToFile("WordDocument.docx", FileFormat.Docx2013)
        End Sub
    End Class
End Namespace