Document document = new Document();
Section section = document.AddSection(); 

Paragraph paragraph1 = section.AddParagraph();

//Add tab and set its position (in points)
Tab tab = paragraph1.Format.Tabs.AddTab(28);
//Set tab alignment
tab.Justification = TabJustification.Left;
//move to next tab and append text
paragraph1.AppendText("\tWashing Machine");

//Add another tab and set its position (in points)
tab = paragraph1.Format.Tabs.AddTab(280);
//Set tab alignment
tab.Justification = TabJustification.Left;
//Specify tab leader type
tab.TabLeader = TabLeader.Dotted;
//move to next tab and append text
paragraph1.AppendText("\t$650"); 

Paragraph paragraph2 = section.AddParagraph();

//Add tab and set its position (in points)
tab = paragraph2.Format.Tabs.AddTab(28);
//Set tab alignment
tab.Justification = TabJustification.Left;
//move to next tab and append text
paragraph2.AppendText("\tRefrigerator");

//Add another tab and set its position (in points)
tab = paragraph2.Format.Tabs.AddTab(280);
//Set tab alignment
tab.Justification = TabJustification.Left;
//Specify tab leader type
tab.TabLeader = TabLeader.NoLeader;
//move to next tab and append text
paragraph2.AppendText("\t$800"); 

document.SaveToFile("Tab.docx", FileFormat.Docx2013);
document.Close();

using Spire.Doc;
using Spire.Doc.Documents;
namespace AddTapStops
{
 class Program
    {

     static void Main(string[] args)
     {
         //Instantiate a Document object
         Document document = new Document();
         //Add a section
         Section section = document.AddSection();

         //Add paragraph 1
         Paragraph paragraph1 = section.AddParagraph();

         //Add tab and set its position (in points)
         Tab tab = paragraph1.Format.Tabs.AddTab(28);
         //Set tab alignment
         tab.Justification = TabJustification.Left;
         //move to next tab and append text
         paragraph1.AppendText("\tWashing Machine");

         //Add another tab and set its position (in points)
         tab = paragraph1.Format.Tabs.AddTab(280);
         //Set tab alignment
         tab.Justification = TabJustification.Left;
         //Specify tab leader type
         tab.TabLeader = TabLeader.Dotted;
         //move to next tab and append text
         paragraph1.AppendText("\t$650");

         //Add paragraph 2
         Paragraph paragraph2 = section.AddParagraph();

         //Add tab and set its position (in points)
         tab = paragraph2.Format.Tabs.AddTab(28);
         //Set tab alignment
         tab.Justification = TabJustification.Left;
         //move to next tab and append text
         paragraph2.AppendText("\tRefrigerator"); //move to next tab and append text

         //Add another tab and set its position (in points)
         tab = paragraph2.Format.Tabs.AddTab(280);
         //Set tab alignment
         tab.Justification = TabJustification.Left;
         //Specify tab leader type
         tab.TabLeader = TabLeader.NoLeader;
         //move to next tab and append text
         paragraph2.AppendText("\t$800");

         //Save and close the document object            
         document.SaveToFile("Tab.docx", FileFormat.Docx2013);
         document.Close();

     }

    }
}

Workbook workbook = new Workbook();
workbook.LoadFromFile("Sample.xlsx");

Worksheet sheet = workbook.Worksheets[0];

IChartShape chart = sheet.Charts[0];

chart.Remove();

workbook.SaveToFile("RemoveChart.xlsx");

using Spire.Xls;
using Spire.Xls.Core;
namespace RemoveChart
{

    class Program
    {

        static void Main(string[] args)
        {
            Workbook workbook = new Workbook();
            workbook.LoadFromFile("Sample.xlsx");
            Worksheet sheet = workbook.Worksheets[0];
            IChartShape chart = sheet.Charts[0];
            chart.Remove();
            workbook.SaveToFile("RemoveChart.xlsx");

        }

    }
}

Imports Spire.Xls
Imports Spire.Xls.Core
Namespace RemoveChart

	Class Program

		Private Shared Sub Main(args As String())
			Dim workbook As New Workbook()
			workbook.LoadFromFile("Sample.xlsx")
			Dim sheet As Worksheet = workbook.Worksheets(0)
			Dim chart As IChartShape = sheet.Charts(0)
			chart.Remove()
			workbook.SaveToFile("RemoveChart.xlsx")

		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);


        }
    }
}

Presentation ppt = new Presentation();

RectangleF rect = new RectangleF(40, 100, 550, 320);
IChart chart = ppt.Slides[0].Shapes.AppendChart(ChartType.ColumnClustered, rect);

chart.ChartData.Clear(0, 0, 5, 5);

Workbook wb = new Workbook();
wb.LoadFromFile("data.xlsx");
Worksheet sheet = wb.Worksheets[0];

for (int r = 0; r < sheet.AllocatedRange.RowCount; r++)
{
    for (int c = 0; c < sheet.AllocatedRange.ColumnCount; c++)
    {
        chart.ChartData[r, c].Value = sheet.Range[r + 1, c + 1].Value2;
    }
}

chart.Series.SeriesLabel = chart.ChartData["B1", "B1"];
chart.Categories.CategoryLabels = chart.ChartData["A2","A13"];

chart.Series[0].Values = chart.ChartData["B2","B13"];

ppt.SaveToFile("chart.pptx",Spire.Presentation.FileFormat.Pptx2013);

using System;
using Spire.Presentation;
using System.Drawing;
using Spire.Presentation.Charts;
using Spire.Xls;

namespace CreateChartFromExcelData
{
    class Program
    {
        static void Main(string[] args)
        {
            //initialize an instance of Presentation class
            Presentation ppt = new Presentation();
            RectangleF rect = new RectangleF(40, 100, 550, 320);
            IChart chart = ppt.Slides[0].Shapes.AppendChart(ChartType.ColumnClustered, rect);

            //clear the default dummy data
            chart.ChartData.Clear(0, 0, 5, 5);

            //load an existing Excel file to Workbook object
            Workbook wb = new Workbook();
            wb.LoadFromFile("data.xlsx");
            Worksheet sheet = wb.Worksheets[0];

            //import data from the sheet to chart table
            for (int r = 0; r < sheet.AllocatedRange.RowCount; r++)
            {
                for (int c = 0; c < sheet.AllocatedRange.ColumnCount; c++)
                {
                    chart.ChartData[r, c].Value = sheet.Range[r + 1, c + 1].Value2;
                }
            }

            //add chart title
            chart.ChartTitle.TextProperties.Text = "Monthly Sales Report";
            chart.ChartTitle.TextProperties.IsCentered = true;
            chart.ChartTitle.Height = 30;
            chart.HasTitle = true;

            //set the series label
            chart.Series.SeriesLabel = chart.ChartData["B1", "B1"];

            //set the category labels
            chart.Categories.CategoryLabels = chart.ChartData["A2","A13"];

            //set the series values
            chart.Series[0].Values = chart.ChartData["B2","B13"];

            //save the file
            ppt.SaveToFile("chart.pptx",Spire.Presentation.FileFormat.Pptx2013);
        }
    }
}

Imports Spire.Presentation
Imports System.Drawing
Imports Spire.Presentation.Charts
Imports Spire.Xls

Namespace CreateChartFromExcelData
    Class Program
        Private Shared Sub Main(args As String())
			'initialize an instance of Presentation class
			Dim ppt As New Presentation()

            Dim rect As New RectangleF(40, 100, 550, 320)

            Dim chart As IChart = ppt.Slides(0).Shapes.AppendChart(ChartType.ColumnClustered, rect)

			'clear the default dummy data
			chart.ChartData.Clear(0, 0, 5, 5)

			'load an existing Excel file to Workbook object
			Dim wb As New Workbook()

            wb.LoadFromFile("data.xlsx")
			Dim sheet As Worksheet = wb.Worksheets(0)

			'import data from the sheet to chart table
			For r As Integer = 0 To sheet.AllocatedRange.RowCount - 1
				For c As Integer = 0 To sheet.AllocatedRange.ColumnCount - 1

                    chart.ChartData(r, c).Value = sheet.Range(r + 1, c + 1).Value2
                Next

            Next

			'add chart title
			chart.ChartTitle.TextProperties.Text = "Monthly Sales Report"
			chart.ChartTitle.TextProperties.IsCentered = True
            chart.ChartTitle.Height = 30
			chart.HasTitle = True

			'set the series label

            chart.Series.SeriesLabel = chart.ChartData("B1", "B1")

			'set the category labels

            chart.Categories.CategoryLabels = chart.ChartData("A2", "A13")

			'set the series values

            chart.Series(0).Values = chart.ChartData("B2", "B13")

			'save the file
			ppt.SaveToFile("chart.pptx", Spire.Presentation.FileFormat.Pptx2013)
		End Sub

    End Class
End Namespace