OLE Object

This article demonstrates embedding a file as an OLE object and updating its data using Aspose.Slides for .NET.

Download and run

Download the complete project, extract it, and open Example.sln or run:

dotnet restore Example.sln
dotnet run --project Example.csproj -- --mode evaluation

The download includes every case below, its fixture helpers and inputs. Program.cs runs all cases; use --action block-001 to run one independently. Outputs and an action report are written to the printed output directory. No previous example or working-directory setup is required. Evaluation adds a watermark and can truncate read-back text; the short fixtures still have explicit structural checks. For full text and no watermark, use --mode licensed --license PATH with your own valid license. See the setup guide for supported SDKs and native prerequisites.

Each printed CaseNN.cs file is compiled verbatim with the included Program.cs and bootstrap. Checks run before saving and after reopening the result.

Add an OLE Object

Embed a PDF file into the presentation.

using System;
using System.IO;
using System.Linq;
using Aspose.Slides;
using Aspose.Slides.Export;
using Aspose.Slides.DOM.Ole;

internal static partial class Program
{
    static void Case01()
    {
        using var presentation = new Presentation();
        var slide = presentation.Slides[0];

        var pdfData = File.ReadAllBytes(Context.Input("doc.pdf"));
        var dataInfo = new OleEmbeddedDataInfo(pdfData, "pdf");
        var oleFrame = slide.Shapes.AddOleObjectFrame(20, 20, 50, 50, dataInfo);

        // Validate the in-memory operation and its persisted result independently.
        RoundTrip(presentation, "block-001", p =>
        {
            Context.Require(p.Slides[0].Shapes.OfType<IOleObjectFrame>().Single().EmbeddedData.EmbeddedFileData.SequenceEqual(File.ReadAllBytes(Context.Input("doc.pdf"))), "AddOleObject: semantic check 1 failed.");
        });
        Context.Pass("elements/ole-object/block-001", "AddOleObject", "save-reopen-structure");
    }
}

Access an OLE Object

Retrieve the first OLE object frame on a slide.

using System;
using System.IO;
using System.Linq;
using Aspose.Slides;
using Aspose.Slides.Export;
using Aspose.Slides.DOM.Ole;

internal static partial class Program
{
    static void Case02()
    {
        using var presentation = new Presentation();
        var slide = presentation.Slides[0];

        var pdfData = File.ReadAllBytes(Context.Input("doc.pdf"));
        var dataInfo = new OleEmbeddedDataInfo(pdfData, "pdf");
        var oleFrame = slide.Shapes.AddOleObjectFrame(20, 20, 50, 50, dataInfo);

        var firstOleFrame = slide.Shapes.OfType<IOleObjectFrame>().First();

        // Validate the in-memory operation and its persisted result independently.
        RoundTrip(presentation, "block-002", p =>
        {
            Context.Require(p.Slides[0].Shapes.OfType<IOleObjectFrame>().Single().EmbeddedData.EmbeddedFileExtension.TrimStart('.') == "pdf", "AccessOleObject: semantic check 1 failed.");
        });
        Context.Pass("elements/ole-object/block-002", "AccessOleObject", "save-reopen-structure");
    }
}

Remove an OLE Object

Delete an embedded OLE object from the slide.

using System;
using System.IO;
using System.Linq;
using Aspose.Slides;
using Aspose.Slides.Export;
using Aspose.Slides.DOM.Ole;

internal static partial class Program
{
    static void Case03()
    {
        using var presentation = new Presentation();
        var slide = presentation.Slides[0];

        var pdfData = File.ReadAllBytes(Context.Input("doc.pdf"));
        var dataInfo = new OleEmbeddedDataInfo(pdfData, "pdf");
        var oleFrame = slide.Shapes.AddOleObjectFrame(20, 20, 50, 50, dataInfo);

        slide.Shapes.Remove(oleFrame);

        // Validate the in-memory operation and its persisted result independently.
        RoundTrip(presentation, "block-003", p =>
        {
            Context.Require(!p.Slides[0].Shapes.OfType<IOleObjectFrame>().Any(), "RemoveOleObject: semantic check 1 failed.");
        });
        Context.Pass("elements/ole-object/block-003", "RemoveOleObject", "save-reopen-structure");
    }
}

Update OLE Object Data

Replace the data embedded in an existing OLE object.

using System;
using System.IO;
using System.Linq;
using Aspose.Slides;
using Aspose.Slides.Export;
using Aspose.Slides.DOM.Ole;

internal static partial class Program
{
    static void Case04()
    {
        using var presentation = new Presentation();
        var slide = presentation.Slides[0];

        var pdfData = File.ReadAllBytes(Context.Input("doc.pdf"));
        var dataInfo = new OleEmbeddedDataInfo(pdfData, "pdf");
        var oleFrame = slide.Shapes.AddOleObjectFrame(20, 20, 50, 50, dataInfo);

        var newData = File.ReadAllBytes(Context.Input("Picture.png"));
        var newDataInfo = new OleEmbeddedDataInfo(newData, "png");
        oleFrame.SetEmbeddedData(newDataInfo);

        // Validate the in-memory operation and its persisted result independently.
        RoundTrip(presentation, "block-004", p =>
        {
            Context.Require(p.Slides[0].Shapes.OfType<IOleObjectFrame>().Single().EmbeddedData.EmbeddedFileData.SequenceEqual(File.ReadAllBytes(Context.Input("Picture.png"))), "UpdateOleObjectData: semantic check 1 failed.");
        });
        Context.Pass("elements/ole-object/block-004", "UpdateOleObjectData", "save-reopen-structure");
    }
}
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