Presentation presentation = new Presentation();

string ImageFile = "bg.png";
RectangleF rect = new RectangleF(0, 0, presentation.SlideSize.Size.Width, presentation.SlideSize.Size.Height);
presentation.Slides[0].Shapes.AppendEmbedImage(ShapeType.Rectangle, ImageFile, rect);
presentation.Slides[0].Shapes[0].Line.FillFormat.SolidFillColor.Color = Color.FloralWhite;

IAutoShape shape = presentation.Slides[0].Shapes.AppendShape(ShapeType.Rectangle, new RectangleF(50, 70, 450, 150));
shape.Fill.FillType = FillFormatType.None;
shape.ShapeStyle.LineColor.Color = Color.White;

//add text to shape
shape.TextFrame.Text = "This demo shows how to Create PowerPoint file and save it to Stream.";
shape.TextFrame.Paragraphs[0].TextRanges[0].Fill.FillType = FillFormatType.Solid;
shape.TextFrame.Paragraphs[0].TextRanges[0].Fill.SolidColor.Color = Color.Black;

FileStream to_stream = new FileStream("To_stream.pptx", FileMode.Create);
presentation.SaveToFile(to_stream, FileFormat.Pptx2010);
to_stream.Close();

Presentation presentationLoad = new Presentation();

FileStream from_stream = File.OpenRead("sample.pptx");
presentationLoad.LoadFromStream(from_stream, FileFormat.Pptx2010);

presentationLoad.SaveToFile("From_stream.pptx",FileFormat.Pptx2010);
from_stream.Dispose();

using Spire.Presentation;
using Spire.Presentation.Drawing;
using System.Drawing;
using System.IO;
namespace SavePPTtoStream
{
    class Program
    {
        static void Main(string[] args)
        {

            //A: create PowerPoint file and save it to stream
            Presentation presentation = new Presentation();

            //set background Image
            string ImageFile = "bg.png";
            RectangleF rect = new RectangleF(0, 0, presentation.SlideSize.Size.Width, presentation.SlideSize.Size.Height);
            presentation.Slides[0].Shapes.AppendEmbedImage(ShapeType.Rectangle, ImageFile, rect);
            presentation.Slides[0].Shapes[0].Line.FillFormat.SolidFillColor.Color = Color.FloralWhite;

            //append new shape
            IAutoShape shape = presentation.Slides[0].Shapes.AppendShape(ShapeType.Rectangle, new RectangleF(50, 70, 450, 150));
            shape.Fill.FillType = FillFormatType.None;
            shape.ShapeStyle.LineColor.Color = Color.White;

            //add text to shape
            shape.TextFrame.Text = "This demo shows how to Create PowerPoint file and save it to Stream.";
            shape.TextFrame.Paragraphs[0].TextRanges[0].Fill.FillType = FillFormatType.Solid;
            shape.TextFrame.Paragraphs[0].TextRanges[0].Fill.SolidColor.Color = Color.Black;

            //save to Stream
            FileStream to_stream = new FileStream("To_stream.pptx", FileMode.Create);
            presentation.SaveToFile(to_stream, FileFormat.Pptx2010);
            to_stream.Close();

            System.Diagnostics.Process.Start("To_stream.pptx");


            //B: Load PowerPoint file from Stream
            Presentation presentationLoad = new Presentation();

            //load PowerPoint file from stream
            FileStream from_stream = File.OpenRead("sample.pptx");
            presentationLoad.LoadFromStream(from_stream, FileFormat.Pptx2010);

            //save the document
            presentationLoad.SaveToFile("From_stream.pptx", FileFormat.Pptx2010);
            from_stream.Dispose();

            System.Diagnostics.Process.Start("From_stream.pptx");


        }
    }
}

//Create a new word document and load from the file.
Document document = new Document();
document.LoadFromFile("sample.docx");

// Traverse every paragraph of the first section of the document
for (int j = 0; j < document.Sections[0].Paragraphs.Count; j++)
  {
   Paragraph p = document.Sections[0].Paragraphs[j];

// Traverse every child object of a paragraph
for (int i = 0; i < p.ChildObjects.Count; i++)
    {
     DocumentObject obj = p.ChildObjects[i];

//Find the page break object
 if (obj.DocumentObjectType == DocumentObjectType.Break)
    {
     Break b = obj as Break;

// Remove the page break object from paragraph
p.ChildObjects.Remove(b);

//save the document to file.
document.SaveToFile("result.docx");

using Spire.Doc;
using Spire.Doc.Documents;
namespace RemovePageBreak
{
    class Program
    {
        static void Main(string[] args)
        {
            Document document = new Document();
            document.LoadFromFile("sample.docx", FileFormat.Docx);
            for (int j = 0; j < document.Sections[0].Paragraphs.Count; j++)
            {
                Paragraph p = document.Sections[0].Paragraphs[j];
                for (int i = 0; i < p.ChildObjects.Count; i++)
                {
                    DocumentObject obj = p.ChildObjects[i];
                    if (obj.DocumentObjectType == DocumentObjectType.Break)
                    {
                        Break b = obj as Break;
                        p.ChildObjects.Remove(b);
                    }
                }
            }
            document.SaveToFile("result.docx", FileFormat.Docx);
            System.Diagnostics.Process.Start("result.docx");
        }
    }
}

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

string[] str = new string[] { "Germany", "Berlin", "Europe", "0152458", "20860000" };

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

for (int i = 0; i < table.ColumnsList.Count;i++ )
{
    //replace the data in cell
    table[i, 2].TextFrame.Text = str[i];

    //set the highlightcolor
    table[i, 2].TextFrame.TextRange.HighlightColor.Color = Color.BlueViolet;
}

table.StylePreset = TableStylePreset.LightStyle1Accent2;

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

using Spire.Presentation;
using System.Drawing;

namespace EditTable
{

    class Program
    {

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

            presentation.LoadFromFile("table.pptx");

            //the data used in replacement
            string[] str = new string[] { "Germany", "Berlin", "Europe", "0152458", "20860000" };

            ITable table = null;

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

                    //change the style of table
                    table.StylePreset = TableStylePreset.LightStyle1Accent2;

                    for (int i = 0; i < table.ColumnsList.Count; i++)
                    {
                        //replace the data in cell
                        table[i, 2].TextFrame.Text = str[i];

                        //set the highlightcolor
                        table[i, 2].TextFrame.TextRange.HighlightColor.Color = Color.BlueViolet;
                    }
                }
            }

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

        }

    }
}

Imports Spire.Presentation
Imports System.Drawing

Namespace EditTbale

	Class Program

		Private Shared Sub Main(args As String())
			'create a PPT document
			Dim presentation As New Presentation()

			presentation.LoadFromFile("table.pptx")

			'the data used in replacement
			Dim str As String() = New String() {"Germany", "Berlin", "Europe", "0152458", "20860000"}

			Dim table As ITable = Nothing

			'get the table in PPT document
			For Each shape As IShape In presentation.Slides(0).Shapes
				If TypeOf shape Is ITable Then
					table = DirectCast(shape, ITable)

					'change the style of table
					table.StylePreset = TableStylePreset.LightStyle1Accent2

					For i As Integer = 0 To table.ColumnsList.Count - 1
						'replace the data in cell
						table(i, 2).TextFrame.Text = str(i)

						'set the highlightcolor
						table(i, 2).TextFrame.TextRange.HighlightColor.Color = Color.BlueViolet
					Next
				End If
			Next

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

		End Sub

	End Class
End Namespace

BarcodeSettings setting = new BarcodeSettings();

setting.Data = "58465157484";
setting.Data2D = "58465157484";

setting.Type = BarCodeType.UPCA;

setting.Unit = GraphicsUnit.Millimeter;
setting.X = 0.8F;

BarCodeGenerator gen = new BarCodeGenerator(setting);
Image img = gen.GenerateImage();
img.Save("barcode.png");

using Spire.Barcode;
using System.Drawing;


namespace SetXDimension
{
    class Program
    {
        static void Main(string[] args)
        {
            BarcodeSettings barsetting = new BarcodeSettings();

            //set the x dimension
            barsetting.X = 0.8f;
            barsetting.Unit = GraphicsUnit.Millimeter;

            barsetting.HasBorder = true;
            barsetting.BorderWidth = 0.5F;

            //set the data
            barsetting.Data = "58465157484";
            barsetting.Data2D = "58465157484";

            //generate UPCA barcode
            barsetting.Type = BarCodeType.UPCA;

            BarCodeGenerator bargenerator = new BarCodeGenerator(barsetting);
            Image barcodeimage = bargenerator.GenerateImage();
            barcodeimage.Save("barcode.png");

            System.Diagnostics.Process.Start("barcode.png");
        }
    }
}

Imports Spire.Barcode
Imports System.Drawing


Namespace SetXDimension
	Class Program
		Private Shared Sub Main(args As String())
			Dim barsetting As New BarcodeSettings()

			'set the x dimension
			barsetting.X = 0.8F
			barsetting.Unit = GraphicsUnit.Millimeter

			barsetting.HasBorder = True
			barsetting.BorderWidth = 0.5F

			'set the data
			barsetting.Data = "58465157484"
			barsetting.Data2D = "58465157484"

			'generate UPCA barcode
			barsetting.Type = BarCodeType.UPCA

			Dim bargenerator As New BarCodeGenerator(barsetting)
			Dim barcodeimage As Image = bargenerator.GenerateImage()
			barcodeimage.Save("barcode.png")

			System.Diagnostics.Process.Start("barcode.png")
		End Sub
	End Class
End Namespace