Performance Testing with Large PowerPoint Files

The following example shows how you can test the performance of the GemBox.Presentation component with large presentation files using the Free version of the component.

C#
VB.NET

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using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Engines;
using BenchmarkDotNet.Jobs;
using BenchmarkDotNet.Running;
using GemBox.Presentation;
using System.Collections.Generic;
using System.IO;

[SimpleJob(RuntimeMoniker.Net80)]
[SimpleJob(RuntimeMoniker.Net48)]
public class Program
{
    private PresentationDocument presentation;
    private readonly Consumer consumer = new Consumer();

    public static void Main()
    {
        BenchmarkRunner.Run<Program>();
    }

    [GlobalSetup]
    public void SetLicense()
    {
        // If using the Professional version, put your serial key below.
        ComponentInfo.SetLicense("FREE-LIMITED-KEY");

        // If using Free version and example exceeds its limitations, use Trial or Time Limited version:
        // https://www.gemboxsoftware.com/presentation/examples/free-trial-professional/901

        this.presentation = PresentationDocument.Load("RandomSlides.pptx");
    }

    [Benchmark]
    public PresentationDocument Reading()
    {
        return PresentationDocument.Load("RandomSlides.pptx");
    }

    [Benchmark]
    public void Writing()
    {
        using (var stream = new MemoryStream())
            this.presentation.Save(stream, new PptxSaveOptions());
    }

    [Benchmark]
    public void Iterating()
    {
        this.LoopThroughAllDrawings().Consume(this.consumer);
    }

    public IEnumerable<Drawing> LoopThroughAllDrawings()
    {
        foreach (var slide in this.presentation.Slides)
            foreach (var drawing in slide.Content.Drawings.All())
                yield return drawing;
    }
}

Imports BenchmarkDotNet.Attributes
Imports BenchmarkDotNet.Engines
Imports BenchmarkDotNet.Jobs
Imports BenchmarkDotNet.Running
Imports GemBox.Presentation
Imports System.Collections.Generic
Imports System.IO

<SimpleJob(RuntimeMoniker.Net80)>
<SimpleJob(RuntimeMoniker.Net48)>
Public Class Program

    Private presentation As PresentationDocument
    Private ReadOnly consumer As Consumer = New Consumer()

    Public Shared Sub Main()
        BenchmarkRunner.Run(Of Program)()
    End Sub

    <GlobalSetup>
    Public Sub SetLicense()
        ' If using the Professional version, put your serial key below.
        ComponentInfo.SetLicense("FREE-LIMITED-KEY")

        ' If using Free version and example exceeds its limitations, use Trial or Time Limited version:
        ' https://www.gemboxsoftware.com/presentation/examples/free-trial-professional/901

        Me.presentation = PresentationDocument.Load("RandomSlides.pptx")
    End Sub

    <Benchmark>
    Public Function Reading() As PresentationDocument
        Return PresentationDocument.Load("RandomSlides.pptx")
    End Function

    <Benchmark>
    Public Sub Writing()
        Using stream = New MemoryStream()
            Me.presentation.Save(stream, New PptxSaveOptions())
        End Using
    End Sub

    <Benchmark>
    Public Sub Iterating()
        Me.LoopThroughAllDrawings().Consume(Me.consumer)
    End Sub

    Public Iterator Function LoopThroughAllDrawings() As IEnumerable(Of Object)
        For Each slide In Me.presentation.Slides
            For Each drawing In slide.Content.Drawings.All()
                Yield drawing
            Next
        Next
    End Function

End Class

Measuring performance of reading, writing, and iterating through PowerPoint files in C# and VB.NET — Screenshot of GemBox.Presentation performance measurements

If the Free version limits are exceeded, the component will continue to work in Trial mode if the FreeLimitReached event is handled as shown in the example.

For more information about Trial mode limitations, see the GemBox.Presentation Evaluation and Licensing help page.

Next steps

GemBox.Presentation is a .NET component that enables you to read, write, edit, convert, and print presentation files from your .NET applications using one simple API.

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Performance Testing with Large PowerPoint Files

See also

Next steps