private void Form1_Load(object sender, EventArgs e)
        {
            //load excel document to workbook
            workbook.LoadFromFile(@"DatatableSample.xls");
            Worksheet sheet = workbook.Worksheets[0];
            sheet.Name = "Original table";
            //extract data to dataTable from sheet 
            DataTable dataTable = sheet.ExportDataTable();
            //show the data to dataGridView
            this.dataGridView.DataSource = dataTable;
        }

            //create a new sheet to save Updata data.
            Worksheet sheet = workbook.CreateEmptySheet("Updata Table");
            //extract data from dataGridView
            DataTable dataTable = this.dataGridView.DataSource as DataTable;
            // insert dataTable to sheet
            sheet.InsertDataTable(dataTable, true, 1, 1);

workbook.SaveToFile("result.xlsx", ExcelVersion.Version2007);

using System;
using System.Data;
using System.Windows.Forms;
using Spire.Xls;
namespace UpdataExcelDataByDataTable
{

    public partial class UpdataExcelData : Form
    {
        private Workbook workbook = new Workbook();
        private void Form1_Load(object sender, EventArgs e)
        {
            workbook.LoadFromFile(@"DatatableSample.xls");
            Worksheet sheet = workbook.Worksheets[0];
            sheet.Name = "Original table";
            DataTable dataTable = sheet.ExportDataTable();
            this.dataGridView.DataSource = dataTable;
        }
        private void Updata_Click(object sender, EventArgs e)
        {
            Worksheet sheet = workbook.CreateEmptySheet("Updata Table");
            DataTable dataTable = this.dataGridView.DataSource as DataTable;
            sheet.InsertDataTable(dataTable, true, 1, 1);
            workbook.SaveToFile("result.xlsx", ExcelVersion.Version2007);
            System.Diagnostics.Process.Start("result.xlsx");
        }
    }
}

Imports System.Data
Imports System.Windows.Forms
Imports Spire.Xls
Public Class Form1
    Private workbook As New Workbook()
    Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
        'load excel document to workbook
        workbook.LoadFromFile("DatatableSample.xls")
        Dim sheet As Worksheet = workbook.Worksheets(0)
        sheet.Name = "Original table"
        'extract data to dataTable from sheet 
        Dim dataTable As DataTable = sheet.ExportDataTable()
        'show the data to dataGridView
        Me.DataGridView.DataSource = dataTable
    End Sub

PdfDocument doc = new PdfDocument();
PdfPageBase page = doc.Pages.Add();

PdfGrid grid = new PdfGrid();
PdfGridRow row = grid.Rows.Add();
           row = grid.Rows.Add();
                 grid.Columns.Add(2);

grid.Style.CellPadding = new PdfPaddings(1, 1, 1, 1);

float width = page.Canvas.ClientSize.Width - (grid.Columns.Count + 1);
      grid.Columns[0].Width = width * 0.25f;
      grid.Columns[1].Width = width * 0.25f;

PdfGridCellContentList lst = new PdfGridCellContentList();
PdfGridCellContent textAndStyle = new PdfGridCellContent();
textAndStyle.Image = PdfImage.FromFile("..\\..\\image1.jpg");

textAndStyle.ImageSize = new SizeF(50, 50);
lst.List.Add(textAndStyle);
          
grid.Rows[0].Cells[0].Value = lst;
grid.Rows[1].Height = grid.Rows[0].Height;

PdfLayoutResult result = grid.Draw(page, new PointF(10, 30));

doc.SaveToFile(outputFile, FileFormat.PDF);
System.Diagnostics.Process.Start(outputFile);

using Spire.Pdf;
using Spire.Pdf.Graphics;
using Spire.Pdf.Grid;
using System.Drawing;

namespace InsertImage
{
    class Program
    {
        static void Main(string[] args)
        {
            string outputFile = @"..\..\output.pdf";
            //Create a pdf document
            PdfDocument doc = new PdfDocument();
            //Add a page for the pdf document
            PdfPageBase page = doc.Pages.Add();
            //Create a pdf grid
            PdfGrid grid = new PdfGrid();
            //Set the cell padding of pdf grid
            grid.Style.CellPadding = new PdfPaddings(1, 1, 1, 1);
            //Add a row for pdf grid
            PdfGridRow row = grid.Rows.Add();
            //Add two columns for pdf grid 
            grid.Columns.Add(2);
            float width = page.Canvas.ClientSize.Width - (grid.Columns.Count + 1);
            //Set the width of the first column
            grid.Columns[0].Width = width * 0.25f;
            grid.Columns[1].Width = width * 0.25f;
            //Add a image
            PdfGridCellContentList lst = new PdfGridCellContentList();
            PdfGridCellContent textAndStyle = new PdfGridCellContent();
            textAndStyle.Image = PdfImage.FromFile("..\\..\\image1.jpg");
            //Set the size of image
            textAndStyle.ImageSize = new SizeF(50, 50);
            lst.List.Add(textAndStyle);
            //Add a image into the first cell. 
            row.Cells[0].Value = lst;
            //Draw pdf grid into page at the specific location
            PdfLayoutResult result = grid.Draw(page, new PointF(10, 30));
            //Save to a pdf file 
            doc.SaveToFile(outputFile, FileFormat.PDF);
            System.Diagnostics.Process.Start(outputFile);
        }
    }
}

Presentation presentation = new Presentation();
presentation.LoadFromFile("sample.ppt");

List shape_tems = new List();
foreach (IShape shape in presentation.Slides[0].Shapes)
{
    if (shape is ITable)
    {
        //add new table to table list
        shape_tems.Add(shape);
    }
}

foreach (IShape shape in shape_tems)
{
    presentation.Slides[0].Shapes.Remove(shape);
}

presentation.SaveToFile("result.pptx", FileFormat.Pptx2010);

//create Presentation instance and load file
Presentation presentation = new Presentation();
presentation.LoadFromFile("sample.ppt");

//get the tables in PowerPoint document
List shape_tems = new List();
foreach (IShape shape in presentation.Slides[0].Shapes)
{
    if (shape is ITable)
    {
        //add new table to table list
        shape_tems.Add(shape);
    }
}

//remove all tables
foreach (IShape shape in shape_tems)
{
    presentation.Slides[0].Shapes.Remove(shape);
}

//save the document
presentation.SaveToFile("result.pptx", FileFormat.Pptx2010);
System.Diagnostics.Process.Start("result.pptx");

'create Presentation instance and load file
Dim presentation As New Presentation()
presentation.LoadFromFile("sample.ppt")

'get the tables in PowerPoint document
Dim shape_tems As New List(Of IShape)()
For Each shape As IShape In presentation.Slides(0).Shapes
    If TypeOf shape Is ITable Then
        'add new table to table list
        shape_tems.Add(shape)
    End If
Next

'remove all tables
For Each shape As IShape In shape_tems
    presentation.Slides(0).Shapes.Remove(shape)
Next

'save the document
presentation.SaveToFile("result.pptx", FileFormat.Pptx2010)
System.Diagnostics.Process.Start("result.pptx")

using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
using System.Collections.Generic;
using System.Drawing;
namespace FindHyperlink
{
    class Program
    {
        static void Main(string[] args)
        {
            Document doc = new Document();
            doc.LoadFromFile("Spire.docx");
            List hyperlinks = new List();
            foreach (Section section in doc.Sections)
            {
                foreach (DocumentObject sec in section.Body.ChildObjects)
                {
                    if (sec.DocumentObjectType == DocumentObjectType.Paragraph)
                    {
                        foreach (DocumentObject para in (sec as Paragraph).ChildObjects)
                        {
                            if (para.DocumentObjectType == DocumentObjectType.Field)
                            {
                                Field field = para as Field;

                                if (field.Type == FieldType.FieldHyperlink)
                                {
                                    hyperlinks.Add(field);
                                }

                            }
                        }
                    }
                }
            }
        }

Presentation presentation = new Presentation();
presentation.LoadFromFile("table.pptx");

foreach (IShape shape in presentation.Slides[0].Shapes)
{
    if (shape is ITable)
    {
        table = (ITable)shape;
    }
}

foreach (TableRow row in table.TableRows)
{
    foreach (Cell cell in row)
    {
        //print the data in cell
        Console.Write("{0,15}", cell.TextFrame.Text);
    }
    Console.WriteLine();
}

using Spire.Presentation;
using System;

namespace Trasverse
{

    class Program
    {

        static void Main(string[] args)
        {
            //create Presentation instance and load file
            Presentation presentation = new Presentation();
            presentation.LoadFromFile("table.pptx");

            ITable table = null;

            //get the table
            foreach (IShape shape in presentation.Slides[0].Shapes)
            {
                if (shape is ITable)
                {
                    table = (ITable)shape;

                    //traverse through the cells of table
                    foreach (TableRow row in table.TableRows)
                    {
                        foreach (Cell cell in row)
                        {
                            //print the data in cell
                            Console.Write("{0,15}", cell.TextFrame.Text);
                        }
                        Console.WriteLine();
                    }
                }
            }
            Console.ReadLine();

        }

    }
}

Presentation presentation = new Presentation();
presentation.LoadFromFile("table.pptx");

ITable table = null;  
foreach (IShape shape in presentation.Slides[0].Shapes)
{
  if (shape is ITable)
  {
    table = (ITable)shape;
    table.ColumnsList.RemoveAt(1, false)    
    table.TableRows.RemoveAt(1, false);       
  }
}

presentation.SaveToFile("result.pptx", FileFormat.Pptx2010);
System.Diagnostics.Process.Start("result.pptx");

using Spire.Presentation;

namespace RemoveRow
{

    class Program
    {

        static void Main(string[] args)
        {
            //create a PPT document
            Presentation presentation = new Presentation();
            presentation.LoadFromFile("table.pptx");

            //get the table in PPT document
            ITable table = null;
            foreach (IShape shape in presentation.Slides[0].Shapes)
            {
                if (shape is ITable)
                {
                    table = (ITable)shape;

                    //remove the second column
                    table.ColumnsList.RemoveAt(1, false);

                    //remove the second row
                    table.TableRows.RemoveAt(1, false);
                }
            }
            //save the document
            presentation.SaveToFile("result.pptx", FileFormat.Pptx2010);
            System.Diagnostics.Process.Start("result.pptx");

        }

    }
}