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In this document, we will quickly help you finish a simple demo about Spire.Presentation using Visual Studio. As usual, it's a HelloWorld demo. Before you get started, please make sure the Spire.Presentation and Visual Studio (2005 or later) are installed on your computer.
1. In Visual Studio, click, File, New, and then Project. If you want to create a C# project, select Visual C#, Windows and choose Windows Forms Application and name the project HelloWorld. Click OK. If you want to create a Visual Basic project, select Visual Basic, Windows Forms Application and name the project HelloWorld. Click OK.
2. In Solution Explorer, right-click the project HelloWorld and click Add Reference. In the Browse tab, find the folder which you installed the Spire.Presentation in, default is "C:\ProgramFiles\e-iceblue\ Spire.Presentation", double-click the folder Bin. If the target framework of the project HelloWorld
- is .NET 2.0, double-click folder NET2.0
- is .NET 3.5, double-click folder NET3.5
- is .NET 4.0, double-click folder NET4.0
Select assembly Spire.Presentation.dll and click OK to add it to the project.
3. In Solution Explorer, double-click the file Form1.cs/Form1.vb to open the form design view, add a button into the form, and change its name to 'btnRun', change its text to 'Run'.
4. Double-click the button 'Run', you will see the code view and the following method has been added automatically:
private void btnRun_Click(object sender, EventArgs e)
Private Sub btnRun_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRun.Click
5. Add the following codes to the top of the file:
using Spire.Presentation; using Spire.Presentation.Drawing;
Imports Spire.Presentation Imports Spire.Presentation.Drawing
6. Add the following codes to the method btnRun_Click
//create PPT document
Presentation presentation = new Presentation();
//add new shape to PPT document
IAutoShape shape = presentation.Slides[0].Shapes.AppendShape(ShapeType.Rectangle,
new RectangleF(0, 50, 200, 50));
shape.ShapeStyle.LineColor.Color = Color.White;
shape.Fill.FillType = Spire.Presentation.Drawing.FillFormatType.None;
//add text to shape
shape.AppendTextFrame("Hello World!");
//set the Font fill style of text
TextRange textRange = shape.TextFrame.TextRange;
textRange.Fill.FillType = Presentation.Drawing.FillFormatType.Solid;
textRange.Fill.SolidColor.Color = Color.Black;
textRange.LatinFont = new TextFont("Arial Black");
//save the document
presentation.SaveToFile("hello.pptx", FileFormat.Pptx2010);
System.Diagnostics.Process.Start("hello.pptx");
'create PPT document
Dim presentation As New Presentation()
'add new shape to PPT document
Dim shape As IAutoShape = presentation.Slides(0).Shapes.AppendShape(ShapeType.Rectangle, New RectangleF(0, 50, 200, 50)
shape.ShapeStyle.LineColor.Color = Color.White
shape.Fill.FillType = Spire.Presentation.Drawing.FillFormatType.None
'add text to shape
shape.AppendTextFrame("Hello World!")
'set the Font fill style of text
Dim textRange As TextRange = shape.TextFrame.TextRange
textRange.Fill.FillType = Spire.Presentation.Drawing.FillFormatType.Solid
textRange.Fill.SolidColor.Color = Color.Black
textRange.LatinFont = New TextFont("Arial Black")
'save the document
presentation.SaveToFile("hello.pptx", FileFormat.Pptx2010)
System.Diagnostics.Process.Start("hello.pptx")
7. In Solution Explorer, right-click the project HelloWorld and click Debug, then Start new instance, you will see the opened window Form1, click the button 'Run', a PPT document will be created, edited and opened. The string "Hello, World" is filled in the first page.
The following screenshot is result of the project ran:
C#/VB.NET: Convert PowerPoint to Images (PNG, JPG, TIFF, EMF, SVG)
2022-10-19 06:53:00 Written by AdministratorYou may need to convert PowerPoint documents to images for various purposes, such as preventing other users from editing the contents of the PowerPoint documents, generating thumbnails for the PowerPoint documents, or sharing the PowerPoint documents on social media. In this article, you will learn how to convert PowerPoint documents to various image formats in C# and VB.NET using Spire.Presentation for .NET.
- Convert PowerPoint Documents to JPG or PNG Images
- Convert PowerPoint Documents to TIFF Images
- Convert PowerPoint Documents to EMF Images
- Convert PowerPoint Documents to SVG Images
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
Convert PowerPoint Documents to JPG or PNG Images in C# and VB.NET
The following are the main steps to convert a PowerPoint document to JPG or PNG image:
- Initialize an instance of Presentation class.
- Load a PowerPoint document using Presentation.LoadFromFile() method.
- Iterate through all slides in the PowerPoint document.
- Save each slide as System.Drawing.Image object using ISlide.SaveAsImage() method.
- Save the image object to PNG or JPG file using Image.Save() method.
- C#
- VB.NET
using Spire.Presentation;
using System.Drawing;
namespace ConvertPowerPointToJpgOrPngImage
{
class Program
{
static void Main(string[] args)
{
//Create a Presentation instance
Presentation presentation = new Presentation();
//Load a PowerPoint document
presentation.LoadFromFile(@"Sample.pptx");
int i = 0;
//Iterate through all slides in the PowerPoint document
foreach(ISlide slide in presentation.Slides)
{
//Save each slide as PNG image
Image image = slide.SaveAsImage();
string fileName = string.Format("ToImage-img-{0}.png", i);
image.Save(fileName, System.Drawing.Imaging.ImageFormat.Png);
i++;
}
}
}
}
Convert PowerPoint Documents to TIFF Images in C# and VB.NET
The following are the steps to convert a PowerPoint document to TIFF image:
- Initialize an instance of Presentation class.
- Load a PowerPoint document using Presentation.LoadFromFile() method.
- Convert the PowerPoint document to TIFF image using Presentation.SaveToFile(string, FileFormat) method.
- C#
- VB.NET
using Spire.Presentation;
namespace ConvertPowerPointToTiffImage
{
class Program
{
static void Main(string[] args)
{
//Create a Presentation instance
Presentation presentation = new Presentation();
//Load a PowerPoint document
presentation.LoadFromFile(@"Sample.pptx");
//Convert the PowerPoint document to TIFF image
presentation.SaveToFile("toTIFF.tiff", FileFormat.Tiff);
}
}
}
Convert PowerPoint Documents to EMF Images in C# and VB.NET
The following are the steps to convert a PowerPoint document to EMF image:
- Initialize an instance of Presentation class.
- Load a PowerPoint document using Presentation.LoadFromFile() method.
- Iterate through all slides in the PowerPoint document.
- Save each slide to EMF image using ISlide.SaveAsEMF() method.
- C#
- VB.NET
using Spire.Presentation;
namespace ConvertPowerPointToEmfImage
{
class Program
{
static void Main(string[] args)
{
//Create a Presentation instance
Presentation presentation = new Presentation();
//Load a PowerPoint document
presentation.LoadFromFile(@"Sample.pptx");
int i = 0;
//Iterate through all slides in the PowerPoint document
foreach (ISlide slide in presentation.Slides)
{
string fileName = string.Format("ToEmf-{0}.emf", i);
//Save each slide to EMF image
slide.SaveAsEMF(fileName);
//Save each slide to EMF image with specified width and height
//slide.SaveAsEMF(fileName, 1075, 710);
i++;
}
}
}
}
Convert PowerPoint Documents to SVG Images in C# and VB.NET
The following are the steps to convert a PowerPoint document to SVG images:
- Initialize an instance of Presentation class.
- Load a PowerPoint document using Presentation.LoadFromFile() method.
- Convert the PowerPoint document to SVG and save the results into a queue of byte arrays using Presentation.SaveToSVG() method.
- Iterate through the byte arrays in the queue.
- At each iteration, remove and return the byte array at the beginning of the queue using Queue.Dequeue() method.
- Initialize an instance of FileStream class and save the byte array to an SVG file using FileStream.Write() method.
- C#
- VB.NET
using Spire.Presentation;
using System.Collections.Generic;
using System.IO;
namespace ConvertPowerPointToSvgImage
{
class Program
{
static void Main(string[] args)
{
//Create a Presentation instance
Presentation presentation = new Presentation();
//Load a PowerPoint document
presentation.LoadFromFile(@"Sample.pptx");
//Convert the PowerPoint document to SVG and save the results into a queue of byte arrays
Queue<byte[]> svgBytes = presentation.SaveToSVG();
int count = svgBytes.Count;
//Iterate through the byte arrays in the queue
for (int i = 0; i < count; i++)
{
//Remove and return the byte array at the beginning of the queue
byte[] bt = svgBytes.Dequeue();
//Specify the output file name
string fileName = string.Format("ToSVG-{0}.svg", i);
//Create a FileStream instance
FileStream fs = new FileStream(fileName, FileMode.Create);
//Save the byte array to a SVG file
fs.Write(bt, 0, bt.Length);
}
}
}
}
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.
In this document, I will introduce you how to add Spire.PDFViewer controls to Toolbox for WPF application.
How To
Right-click on the blank part of the Toolbox - "Add Tab" - name the new Tab "Spire WPF Controls":
Right-click on the blank part below "Spire WPF Controls" - "Choose Items" - "WPF Components" - "Browse" to the "Bin" folder - find the file "Spire.PdfViewer.Wpf.dll" - "Open".
Click "OK". Then you have added controls to Toolbox successfully.
