Thursday, 29 May 2014 02:12

How to Remove Slides from a Presentation

Sometimes, we may need to delete specific slide in a PowerPoint presentation due to any reason. This section will illustrate that how we can accomplish that task using Spire.Presentation for .NET.

As a matter of fact, it is quite easy and convenient to remove slides by only one line of core code if you have Spire.Presentation.Dll installed as a reference in your .NET project assemblies. Here is the method:

Step 1: Create an instance of presentation class and load PPT documents

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

Step 2: Remove the second slide from the presentation by using its index position

presentation.Slides.RemoveAt(1);

Step 3: Save and review

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

Original layout:

Remove Slides from a Presentation

Result:

Remove Slides from a Presentation

Full C# code:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Spire.Presentation;

namespace RemoveSlide
{
    class Program
    {
        static void Main(string[] args)
        {
            Presentation presentation = new Presentation();
            presentation.LoadFromFile("sample.pptx");

            //remove the second slide
            presentation.Slides.RemoveAt(1);

             presentation.SaveToFile("result.pptx",FileFormat.Pptx2010);
            System.Diagnostics.Process.Start("result.pptx");
        }
    }
}
Tuesday, 27 May 2014 08:40

Delete Annotation from PDF files in C#

Text annotation is often used in PDF file to show readers the extra information of the item. By using Spire.PDF you can not only add a new annotation, edit an existing annotation, but also delete annotations from PDF file. In this article, we will introduce you how to delete a particular annotation and delete all the annotation at one time.

First, check the PDF document with annotations.

Delete Annotation from PDF files in C#

Here comes to the steps of how to remove the bookmarks in C#.

  • Download Spire.PDF for .NET and install it correctly. The Spire.PDF installation is clean, professional and wrapped up in a MSI installer.
  • Add Spire.Pdf.dll as reference in the downloaded Bin folder though the below path: "..\Spire.Pdf\Bin\NET4.0\ Spire.Pdf.dll".
  • Check the code snippet of how to delete the annotations. With Spire.PDF.NET, we can remove both the particular annotation and remove all the annotations.

The code snippet of remove the first annotation from PDF file:

PdfDocument document = new PdfDocument();
//load the pdf file
document.LoadFromFile("E-iceblue.pdf");

//remove the first annotation
document.Pages[0].Annotations.RemoveAt(1);

document.SaveToFile("result.pdf");
System.Diagnostics.Process.Start("result.pdf");

The effective screenshot of remove the first annotation:

Delete Annotation from PDF files in C#

The code snippet of remove all annotations from PDF file:

PdfDocument document = new PdfDocument();
//load the pdf file
document.LoadFromFile("E-iceblue.pdf");

//remove all annotations
document.Pages[0].Annotations.Clear();

document.SaveToFile("result.pdf");
System.Diagnostics.Process.Start("result.pdf");

The effective screenshot of remove all the annotations:

Delete Annotation from PDF files in C#

Monday, 26 May 2014 02:47

How to add Controls to Toolbox in C#

In this document, I will introduce you how to add Spire. Barcode controls to Toolbox for Windows Forms application.

If you have already installed Spire.Barcode, you can add controls this way:

"Start" → "Programs" → "e-iceblue" → "Spire.Barcode": Click "Add Controls into VS Toolbox".

How to add Controls to Toolbox

Click "Add" to add controls.

How to add Controls to Toolbox

Right-click on the blank part of the Toolbox - "Add Ta" - name the new Tab "Spire Controls":

How to add Controls to Toolbox

Right-click on the blank part below "Spire Controls" → "Choose Items" → ".NET Framework Components" → "Browse" to the "Bin" folder → find the file "Spire.Barcode.dll" → "Open".

How to add Controls to Toolbox

Click "OK". Then you have added controls to Toolbox successfully.

How to add Controls to Toolbox

Spire.Presentation for .NET is a professional PowerPoint® compatible API that enables developers to create, read, write, modify, convert and Print PowerPoint documents on any .NET platform (Target .NET Framework, .NET Core, .NET Standard, .NET 5.0, .NET 6.0, Xamarin & Mono Android). As an independent PowerPoint .NET API, Spire.Presentation for .NET doesn't need Microsoft PowerPoint to be installed on machines.

Spire.Presentation for .NET supports PPT, PPS, PPTX and PPSX presentation formats. It provides functions such as managing text, image, shapes, tables, animations, audio and video on slides. It also supports exporting presentation slides to EMF, JPG, TIFF, PDF, XPS, SVG, HTML format etc.

Chart

Friday, 23 May 2014 03:38

Convert HTML String to PDF in C#

Besides convert HTML URL to PDF and HTML file to PDF, now Spire.PDF starts to support converting HTML string to PDF. This article will show you how to convert HTML string into PDF file in C#. We support tables, text and Hyperlinks in the HTML strings. Please check the steps as below:

  • Download Spire.PDF for .NET (Version 3.0.27 above) and install it correctly. The Spire.PDF installation is clean, professional and wrapped up in a MSI installer.
  • Add Spire.Pdf.dll as reference in the downloaded Bin folder though the below path: "..\Spire.Pdf\Bin\NET4.0\ Spire.Pdf.dll".
  • Here comes to the codes:

Step 1: Create a new PDF document.

PdfDocument pdf = new PdfDocument();

Step 2: Set the layout and page setting

PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
//webBrowser load html whether Waiting
htmlLayoutFormat.IsWaiting = false;
//page setting
PdfPageSettings setting = new PdfPageSettings();
setting.Size = PdfPageSize.A4;

Step 3: Load the HTML string code and generate the PDF file.

string htmlCode = File.ReadAllText("..\\..\\2.html");

//use single thread to generate the pdf from above html code
Thread thread = new Thread(() =>
{ pdf.LoadFromHTML(htmlCode, false, setting, htmlLayoutFormat);});
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
thread.Join();

Step 4: Save the file to PDF and preview it.

pdf.SaveToFile("output.pdf");
System.Diagnostics.Process.Start("output.pdf");

Please check the effective screenshot:

Convert HTML String to PDF in C#

Full codes:

using Spire.Pdf;
using Spire.Pdf.HtmlConverter;
using System.IO;
using System.Threading;

namespace LoadFromHTML
{
    class Program
    {
        static void Main(string[] args)
        {
            PdfDocument pdf = new PdfDocument();
            PdfHtmlLayoutFormat htmlLayoutFormat = new PdfHtmlLayoutFormat();
            htmlLayoutFormat.IsWaiting = false;
            PdfPageSettings setting = new PdfPageSettings();
            setting.Size = PdfPageSize.A4;
            string htmlCode = File.ReadAllText("..\\..\\2.html");

            Thread thread = new Thread(() =>
            { pdf.LoadFromHTML(htmlCode, false, setting, htmlLayoutFormat); });
            thread.SetApartmentState(ApartmentState.STA);
            thread.Start();
            thread.Join();

            pdf.SaveToFile("output.pdf");
            System.Diagnostics.Process.Start("output.pdf");
        }
    }
}
Monday, 06 November 2023 07:21

C#: Change Slide Size in PowerPoint

Changing slide size is one way to maintain the visual integrity of your PowerPoint presentation. By adjusting the slide size to the specific aspect ratio and dimensions of the target screen or projection device, you can avoid issues such as content appearing cropped, stretched, or distorted. In this article, you will learn how to change the slide size of a PowerPoint presentation in C# using Spire.Presentation for .NET.

Install Spire.Presentation for .NET

To begin with, you need to add the DLL files included in the Spire.Presentation for.NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.

PM> Install-Package Spire.Presentation

Change the Slide Size to a Preset Size in C#

Spire.Presentation for .NET provides the Presentation.SlideSize.Type property to set or change the slide size to a preset size. The following are the detailed steps.

  • Create a Presentation instance.
  • Load a PowerPoint presentation using Presentation.LoadFromFile() method.
  • Change the slide type of the presentation using Presentation.SlideSize.Type property.
  • Save the result document using Presentation.SaveToFile() method.
  • C#
using Spire.Presentation;

namespace CreateCombination
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Presentation instance
            Presentation ppt = new Presentation();

            //Load a presentation file
            ppt.LoadFromFile("sample.pptx");

            //Change the slide size of the presentation
            ppt.SlideSize.Type = SlideSizeType.Screen4x3;

            //Save the result file
            ppt.SaveToFile("SlideSize.pptx", FileFormat.Pptx2013);
            ppt.Dispose();
        }
    }
}

C#: Change Slide Size in PowerPoint

Change the Slide Size to a Custom Size in C#

Customizing the size of slides requires changing the slide size type to Custom first, and then you can set a desired size through the Presentation.SlideSize.Size property. The following are the detailed steps.

  • Create a Presentation instance.
  • Load a PowerPoint presentation using Presentation.LoadFromFile() method.
  • Change the slide size type to custom using Presentation.SlideSize.Type property.
  • Customize the slide size using Presentation.SlideSize.Size property.
  • Save the result document using Presentation.SaveToFile() method.
  • C#
using Spire.Presentation;
using System.Drawing;

namespace CreateCombination
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Presentation instance
            Presentation ppt = new Presentation();

            //Load a presentation file
            ppt.LoadFromFile("sample.pptx");

            //Change the slide size type to custom
            ppt.SlideSize.Type = SlideSizeType.Custom;

            //Set the slide size
            ppt.SlideSize.Size = new SizeF(900, 600);

            //Save the presentation file
            ppt.SaveToFile("CustomSize.pptx", FileFormat.Pptx2013);
            ppt.Dispose();
        }
    }
}

C#: Change Slide Size in PowerPoint

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If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.

Sometimes, audiences may feel bored when they see slides with only text and images. Inserting a video is a great way to add visual interest to your presentation and make it more engaging for your audience. In this article, you will learn how to insert videos as well as replace and extract videos in PowerPoint in C# and VB.NET using Spire.Presentation for .NET.

Install Spire.Presentation for .NET

To begin with, you need to add the DLL files included in the Spire.Presentation for.NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.

PM> Install-Package Spire.Presentation

Insert a Video into a PowerPoint Presentation in C# and VB.NET

By inserting a video into your presentation, you can share the video with your audience instantly without having to look for it on your computer while presenting. The following steps demonstrate how to insert a video into a PowerPoint presentation:

  • Create an instance of the Presentation class.
  • Load a PowerPoint document using Presentation.LoadFromFile() method.
  • Get a specific slide by its index through Presentation.Slides[int] property.
  • Create an instance of the RectangleF class.
  • Add a video to the slide using ISlide.Shapes.AppendVideoMedia(string, RectangleF) method.
  • Set a thumbnail image for the video through IVideo.PictureFill.Picture.Url property.
  • Save the result document using Presentation.SaveToFile() method.
  • C#
  • VB.NET
using Spire.Presentation;
using Spire.Presentation.Drawing;
using System.Drawing;

namespace InsertVideoInPPT
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Presentation instance
            Presentation presentation = new Presentation();
            //Load a PowerPoint document
            presentation.LoadFromFile(@"Input.pptx");

            //Get the first slide
            ISlide slide = presentation.Slides[0];

            //Add description text
            RectangleF rec_title = new RectangleF(50, 280, 160, 50);
            IAutoShape shape_title = slide.Shapes.AppendShape(ShapeType.Rectangle, rec_title);
            shape_title.ShapeStyle.LineColor.Color = Color.Transparent;
            shape_title.Fill.FillType = FillFormatType.None;
            TextParagraph para_title = new TextParagraph();
            para_title.Text = "Video:";
            para_title.Alignment = TextAlignmentType.Center;
            para_title.TextRanges[0].LatinFont = new TextFont("Myriad Pro Light");
            para_title.TextRanges[0].FontHeight = 32;
            para_title.TextRanges[0].IsBold = TriState.True;
            para_title.TextRanges[0].Fill.FillType = FillFormatType.Solid;
            para_title.TextRanges[0].Fill.SolidColor.Color = Color.FromArgb(68, 68, 68);
            shape_title.TextFrame.Paragraphs.Append(para_title);
            
            //Add a video to the first slide
            RectangleF videoRect = new RectangleF(presentation.SlideSize.Size.Width / 2 - 125, 240, 240, 130);
            IVideo video = slide.Shapes.AppendVideoMedia("Video.mp4", videoRect);
            //Set a thumbnail image for the video
            video.PictureFill.Picture.Url = @"Picture.png";   

            //Save the result document
            presentation.SaveToFile("InsertVideo.pptx", FileFormat.Pptx2010);
        }
    }
}

C#/VB.NET: Insert, Replace or Extract Videos in PowerPoint

Replace a Video in a PowerPoint Presentation in C# and VB.NET

If you think an existing video cannot support your statements well, you can replace it with another suitable one. The following steps demonstrate how to replace an existing video with another video in a PowerPoint presentation:

  • Create an instance of the Presentation class.
  • Load a PowerPoint document using Presentation.LoadFromFile() method.
  • Get a specific slide by its index through Presentation.Slides[int] property.
  • Load a video into a byte array using File.ReadAllBytes() method.
  • Add the loaded video to the video collection of the document using Presentation.Videos.Append(byte[]) method.
  • Loop through all shapes on the slide and find the video shape.
  • Replace the original video with the loaded video through IVideo.EmbeddedVideoData property. Then change the thumbnail image of the video through IVideo.PictureFill.Picture.Url property.
  • Save the result document using Presentation.SaveToFile() method.
  • C#
  • VB.NET
using Spire.Presentation;
using System.IO;

namespace ReplaceVideoInPPT
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Presentation instance
            Presentation ppt = new Presentation();
            //Load a PowerPoint document
            ppt.LoadFromFile("InsertVideo.pptx");

            //Get the first slide
            ISlide slide = ppt.Slides[0];

            //Load a video into a byte array
            byte[] bts = File.ReadAllBytes(@"NewVideo.mp4");
            //Add the loaded video to the video collection of the document
            VideoData videoData = ppt.Videos.Append(bts);

            //Loop through all shapes on the first slide
            foreach (Shape shape in slide.Shapes)
            {
                //Check if the shape is of IVideo type
                if (shape is IVideo)
                {
                    //Typecast the shape as IVideo
                    IVideo video = shape as IVideo;                   
                    //Replace the original video with the loaded video
                    video.EmbeddedVideoData = videoData;
                    //Change the thumbnail image of the video
                    video.PictureFill.Picture.Url = @"Picture1.png";
                }
            }

            //Save the result document
            ppt.SaveToFile("ReplaceVideo.pptx", FileFormat.Pptx2010);
        }
    }
}

C#/VB.NET: Insert, Replace or Extract Videos in PowerPoint

Extract Videos from a PowerPoint Presentation in C# and VB.NET

If you like the videos in a PowerPoint presentation and want to use them in other places, you can extract and save them to your disk. The following steps demonstrate how to extract videos from a PowerPoint presentation:

  • Create an instance of the Presentation class.
  • Load a PowerPoint document using Presentation.LoadFromFile() method.
  • Loop through all slides in the document.
  • Loop through all shapes on each slide.
  • Find the video shapes, then save the videos to disk using IVideo.EmbeddedVideoData.SaveToFile() method.
  • C#
  • VB.NET
using Spire.Presentation;

namespace ExtractVideosInPPT
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Presentation instance
            Presentation presentation = new Presentation();
            //Load a PowerPoint document
            presentation.LoadFromFile(@"ReplaceVideo.pptx");

            int i = 0;
            //Specify the output file path
            string result = string.Format(@"Videos\Video{0}.mp4", i);
                
            //Loop through all slides in the document
            foreach (ISlide slide in presentation.Slides)
            {
                //Loop through all shapes on each slide
                foreach (IShape shape in slide.Shapes)
                {
                    //Check if the shape is of IVideo type
                    if (shape is IVideo)
                    {
                        //Save the video to the specified path
                        (shape as IVideo).EmbeddedVideoData.SaveToFile(result);
                        i++;
                    }
                }
            }
        }
    }
}

C#/VB.NET: Insert, Replace or Extract Videos in PowerPoint

Apply for a Temporary License

If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.

Thursday, 22 December 2022 03:47

C#/VB.NET: Add or Delete Slides in PowerPoint

Slides are the most basic component of a PowerPoint document. Each PowerPoint presentation can be composed of a series of slides containing different elements, such as text, shapes, tables, and images. When you are working on a PowerPoint document, adding and removing slides are probably some of the most required actions. In this article, you will learn how to programmatically add or delete a PowerPoint slide using Spire.Presentation for .NET.

Install Spire.Presentation for .NET

To begin with, you need to add the DLL files included in the Spire.Presentation for.NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.

PM> Install-Package Spire.Presentation

Add a New Slide at the End of the PowerPoint Document

The Presentation.Slides.Append() method provided by Spire.Presentation for .NET allows you to append a new slide after the last slide of a PowerPoint document. The detailed steps are as follows.

  • Initialize an instance of Presentation class.
  • Load a PowerPoint document using Presentation.LoadFromFile() method.
  • Add a new blank slide at the end of the document using Presentation.Slides.Append() method.
  • Save the result document using Presentation.SaveToFile() method.
  • C#
  • VB.NET
using Spire.Presentation;

namespace AddNewSlideinPowerPoint
{
    class Program
    {
        static void Main(string[] args)
        {
            // Initialize an instance of Presentation class
            Presentation presentation = new Presentation();

            //Load a sample PowerPoint document
            presentation.LoadFromFile("Sample.pptx");

            //Add a new slide at the end of the document
            presentation.Slides.Append();

            //Save the result document
            presentation.SaveToFile("AddSlide.pptx", FileFormat.Pptx2013);
        }
    }
}

C#/VB.NET: Add or Delete Slides in PowerPoint

Insert a New Slide Before a Specific Slide in PowerPoint

Sometimes you may also need to insert a slide before a specific slide to add additional supporting information, and below are the detailed steps to accomplish the task.

  • Initialize an instance of Presentation class.
  • Load a PowerPoint document using Presentation.LoadFromFile() method.
  • Insert a blank slide before a specified slide using Presentation.Slides.Insert() method.
  • Save the result document using Presentation.SaveToFile() method.
  • C#
  • VB.NET
using Spire.Presentation;

namespace InsertSlideinPowerPoint
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Presentation object
            Presentation presentation = new Presentation();

            //Load a sample PowerPoint document
            presentation.LoadFromFile("Sample.pptx");

            //Insert a blank slide before the second slide
            presentation.Slides.Insert(1);

            //Save the result document
            presentation.SaveToFile("InsertSlide.pptx", FileFormat.Pptx2013);
        }
    }
}

C#/VB.NET: Add or Delete Slides in PowerPoint

Delete a Specific Slide from a PowerPoint Document

If you want to remove a unnecessary slide from the document, you can use the Presentation.Slides.RemoveAt(int index) method. The detailed steps are as follows.

  • Initialize an instance of Presentation class.
  • Load a PowerPoint document using Presentation.LoadFromFile() method.
  • Remove a specified slide from the document using Presentation.Slides.RemoveAt() method.
  • Save the result document using Presentation.SaveToFile() method.
  • C#
  • VB.NET
using Spire.Presentation;

namespace DeletePowerPointSlide
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a Presentation object
            Presentation presentation = new Presentation();

            //Load a sample PowerPoint document
            presentation.LoadFromFile("Sample.pptx");

            //Remove the first slide
            presentation.Slides.RemoveAt(0);

            //Save the result document
            presentation.SaveToFile("RemoveSlide.pptx", FileFormat.Pptx2013);
        }
    }
}

C#/VB.NET: Add or Delete Slides in PowerPoint

Apply for a Temporary License

If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.

Animation is a great way to emphasize important points, to control the flow of information, and to increase viewer interest in your presentation. You can animate text, pictures, shapes, tables, SmartArt graphics, and other objects in PowerPoint slide to give them visual effects. This article will focus on how to apply animation effect to a shape using Spire.Presentation in C#.

Step 1: Initialize an instance of Presentation class and get the first slide from the presentation.

Presentation ppt = new Presentation();
ISlide slide = ppt.Slides[0];

Step 2: Insert a rectangle in the slide and fill the shape with purple.

IAutoShape shape = slide.Shapes.AppendShape(ShapeType.Rectangle, new RectangleF(50, 50, 200, 80));
shape.Fill.FillType = FillFormatType.Solid;
shape.Fill.SolidColor.Color = Color.Purple;
shape.ShapeStyle.LineColor.Color = Color.White;

Step 3: Apply FadedSwivel animation effect to the shape.

shape.Slide.Timeline.MainSequence.AddEffect(shape, AnimationEffectType.FadedSwivel);

Step 4: Save the file.

ppt.SaveToFile("animations.pptx", FileFormat.Pptx2010);

Output:

How to Set Animations on Shapes in PowerPoint in C#

Full Code:

using Spire.Presentation;
using Spire.Presentation.Drawing.Animation;
using System.Drawing;
using Spire.Presentation.Drawing;

namespace SetAnimationsOnShapes
{
    class Program
    {
        static void Main(string[] args)
        {
            Presentation ppt = new Presentation();
            ISlide slide = ppt.Slides[0];

            IAutoShape shape = slide.Shapes.AppendShape(ShapeType.Rectangle, new RectangleF(50, 50, 200, 80));
            shape.Fill.FillType = FillFormatType.Solid;
            shape.Fill.SolidColor.Color = Color.Purple;
            shape.ShapeStyle.LineColor.Color = Color.White;
            shape.AppendTextFrame("Animated Shape");
            shape.Slide.Timeline.MainSequence.AddEffect(shape, AnimationEffectType.FadedSwivel);
           
            ppt.SaveToFile("animations.pptx", FileFormat.Pptx2010);
        }
    }
}

Conversion from PowerPoint to TIFF may be useful in order to fax the presentation files or send them off for printing. Spire.Presentation provides straightforward method SaveToFile to do the conversion, which automatically detects presentation slides and convert them to TIFF image (one image per slide).

Step 1: Create an instance of Presentation class.

Presentation ppt = new Presentation();

Step 2: Load a PowerPoint file.

ppt.LoadFromFile("template.pptx");

Step 3: Save to TIFF format file.

ppt.SaveToFile("toTIFF.tiff", FileFormat.Tiff);

Output:

How to Convert PowerPoint Document to TIFF Image in C#, VB.NET

Full Code:

[C#]
using Spire.Presentation;
namespace PPTtoTIFF
{
    class Program
    {
        static void Main(string[] args)
        {
            Presentation ppt = new Presentation();
            ppt.LoadFromFile("template.pptx");
            ppt.SaveToFile("toTIFF.tiff", FileFormat.Tiff);
        }
    }
}
[VB.NET]
Imports Spire.Presentation
Namespace PPTtoTIFF
	Class Program
		Private Shared Sub Main(args As String())
			Dim ppt As New Presentation()
			ppt.LoadFromFile("template.pptx")
			ppt.SaveToFile("toTIFF.tiff", FileFormat.Tiff)
		End Sub
	End Class
End Namespace