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

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

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

            //Set the margin
            section.PageSetup.Margins.Left = 90;
            section.PageSetup.Margins.Right = 90;
            Paragraph paragraph = section.AddParagraph();

            //Add texbox 1
            TextBox textBox1 = paragraph.AppendTextBox(section.PageSetup.Margins.Left - 20, section.PageSetup.PageSize.Height + 20);
           
            //Fix the position of textbox 
            textBox1.Format.HorizontalOrigin = HorizontalOrigin.Page;
            textBox1.Format.HorizontalPosition = 0;
            textBox1.Format.VerticalPosition = -10f;
            textBox1.Format.VerticalOrigin = VerticalOrigin.Page;

            //Set the text vertically
            textBox1.Format.TextAnchor = ShapeVerticalAlignment.Center;
            textBox1.Format.LayoutFlowAlt = TextDirection.LeftToRight;

            //Add text and set the font
            Paragraph textboxPara1 = textBox1.Body.AddParagraph();
            TextRange txtrg = textboxPara1.AppendText("Name_______Number_________Class__________");
            txtrg.CharacterFormat.FontName = "Arial";
            txtrg.CharacterFormat.FontSize = 10;
            txtrg.CharacterFormat.TextColor = System.Drawing.Color.Black;
            textboxPara1.Format.HorizontalAlignment = HorizontalAlignment.Center;

            //Save the document
            document.SaveToFile("Result.docx");

        }
    }
}

Namespace WordTextbox
    
    Class Program
        
        Private Shared Sub Main(ByVal args() As String)
            Dim document As Document = New Document
            Dim section As Section = document.AddSection
            section.PageSetup.Margins.Left = 90
            section.PageSetup.Margins.Right = 90
            Dim paragraph As Paragraph = section.AddParagraph
            Dim textBox1 As TextBox = paragraph.AppendTextBox((section.PageSetup.Margins.Left - 20), (section.PageSetup.PageSize.Height + 20))
            textBox1.Format.HorizontalOrigin = HorizontalOrigin.Page
            textBox1.Format.HorizontalPosition = 0
            textBox1.Format.VerticalPosition = -10!
            textBox1.Format.VerticalOrigin = VerticalOrigin.Page
            textBox1.Format.TextAnchor = ShapeVerticalAlignment.Center
            textBox1.Format.LayoutFlowAlt = TextDirection.LeftToRight
            Dim textboxPara1 As Paragraph = textBox1.Body.AddParagraph
            Dim txtrg As TextRange = textboxPara1.AppendText("Name_______Number_________Class__________")
            txtrg.CharacterFormat.FontName= "Arial"
            txtrg.CharacterFormat.FontSize = 10
            txtrg.CharacterFormat.TextColor = System.Drawing.Color.Black
            textboxPara1.Format.HorizontalAlignment = HorizontalAlignment.Center
            document.SaveToFile("Result.docx")
        End Sub
    End Class
End Namespace

using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
namespace InsertTable
{
    class Program
    {

        static void Main(string[] args)
        {

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

            //Add a section
            Section section = document.AddSection();
            //Add a paragraph to the section
            Paragraph paragraph = section.AddParagraph();

            //Add textbox to the paragraph
            TextBox textbox = paragraph.AppendTextBox(300, 100);

            //Add text to textbox
            Paragraph textboxParagraph = textbox.Body.AddParagraph();
            TextRange textboxRange = textboxParagraph.AppendText("Table 1");
            textboxRange.CharacterFormat.FontName = "Arial";

            //Insert table to textbox
            Table table = textbox.Body.AddTable(true);
            //Specify the number of rows and columns of the table
            table.ResetCells(4, 4);

            string[,] data = new string[,]  
{  
{"Name","Age","Gender","ID" },  
{"John","28","Male","0023" },  
{"Steve","30","Male","0024" },  
{"Lucy","26","female","0025" }  
};

            //Add data to table 
            for (int i = 0; i < 4; i++)
            {
                for (int j = 0; j < 4; j++)
                {
                    TextRange tableRange = table[i, j].AddParagraph().AppendText(data[i, j]);
                    tableRange.CharacterFormat.FontName = "Arial";
                }
            }

            //Apply style to table
            table.ApplyStyle(DefaultTableStyle.LightGridAccent3);

            //Save the document
            document.SaveToFile("Output.docx", FileFormat.Docx2013);

        }
    }
}

using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
using System.IO;
using System.Text;
namespace ReadTable
{
    class Program
    {

        static void Main(string[] args)
        {
            //Create a Document instance and load the word document
            Document document = new Document("Output.docx");

            //Get the first textbox
            TextBox textbox = document.TextBoxes[0];

            //Get the first table in the textbox
            Table table = textbox.Body.Tables[0] as Table;

            StringBuilder sb = new StringBuilder();

            //Loop through the paragraphs of the table and extract text to a .txt file
            foreach (TableRow row in table.Rows)
            {
                foreach (TableCell cell in row.Cells)
                {
                    foreach (Paragraph paragraph in cell.Paragraphs)
                    {
                        sb.AppendLine(paragraph.Text);
                    }
                }
            }
            File.WriteAllText("text.txt", sb.ToString());

        }
    }
}

using Spire.Doc;
using Spire.Doc.Fields;
namespace DeleteTable
{
    class Program
    {

        static void Main(string[] args)
        {
            //Create a Document instance and load the word document
            Document document = new Document("Output.docx");

            //Get the first textbox
            TextBox textbox = document.TextBoxes[0];

            //Remove the first table from the textbox
            textbox.Body.Tables.RemoveAt(0);

            //Save the document
            document.SaveToFile("RemoveTable.docx", FileFormat.Docx2013);


        }
    }
}