Save PowerPoint file to Stream and Load PowerPoint file from Stream

Spire.Presentation is a powerful and easy-to-use .NET component, especially designed for developers. Using Spire.Presentation you can generate, modify, convert, render, and print documents without installing Microsoft PowerPoint on your machine. In this document, I will introduce you how to create PowerPoint file and save it to stream. I also introduce you how to load PowerPoint file from stream. Check it below.

Create PowerPoint file and save it to Stream

Step 1: Create Presentation instance.

Presentation presentation = new Presentation();

Step 2: 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;

Step 3: Add text to PowerPoint document.

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;

Step 4: Save document to stream.

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

Preview the generated PowerPoint file:

Save and Load PowerPoint file to/from Stream

Load PowerPoint file from stream.

Step 1: Create Presentation instance.

Presentation presentationLoad = new Presentation();

Step 2: Load PowerPoint file from stream.

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

Step 3: Save the document.

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

Preview the PowerPoint file:

Save and Load PowerPoint file to/from Stream

Full code:

[C#]

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");


        }
    }
}

If you couldn't successfully use Spire.Presentation, please refer Spire.Presentation Quick Start which can guide you quickly use Spire.Presentation.

Save PowerPoint file to Stream and Load PowerPoint file from Stream

Create PowerPoint file and save it to Stream

Load PowerPoint file from stream.

See Also