Manipulate the Embedded OLE Objects in Visio Diagram
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Microsoft Office Visio supports manipulating the OLE objects in the Visio diagram. If an visio file resides outside of the Visio drawing and developers need to add a feature in their .NET applications to auto insert these files inside of the drawing, they can achieve this by using Aspose.Diagram for .NET API.
Manipulate the Embedded OLE Objects Programming Sample
ObjectData property of the ForeignData class allows developers to manipulate with existing OLE objects in Visio diagram. This help topic demonstrates how developers can retrieve an OLE object of the Word document, edit it using Aspose.Words for .NET API, and then save back as an OLE object in the Visio diagram.
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// For complete examples and data files, please go to https://github.com/aspose-diagram/Aspose.Diagram-for-.NET | |
// The path to the documents directory. | |
string dataDir = RunExamples.GetDataDir_OLEObjects(); | |
// Load a Visio diagram | |
Diagram diagram = new Diagram(dataDir + "Drawing1.vsdx"); | |
// Get page of the Visio diagram by name | |
Aspose.Diagram.Page page = diagram.Pages.GetPage("Page-1"); | |
// Get shape of the Visio diagram by ID | |
Aspose.Diagram.Shape OLE_Shape = page.Shapes.GetShape(2); | |
// Filter shapes by type Foreign | |
if (OLE_Shape.Type == Aspose.Diagram.TypeValue.Foreign) | |
{ | |
if (OLE_Shape.ForeignData.ForeignType == ForeignType.Object) | |
{ | |
Stream Ole_stream = new MemoryStream(OLE_Shape.ForeignData.ObjectData); | |
// Get format of the OLE file object | |
Aspose.Words.FileFormatInfo info = Aspose.Words.FileFormatUtil.DetectFileFormat(Ole_stream); | |
if (info.LoadFormat == Aspose.Words.LoadFormat.Doc || info.LoadFormat == Aspose.Words.LoadFormat.Docx) | |
{ | |
// Modify an OLE object | |
var doc = new Aspose.Words.Document(new MemoryStream(OLE_Shape.ForeignData.ObjectData)); | |
doc.Range.Replace("testing", "Aspose", false, true); | |
MemoryStream outStream = new MemoryStream(); | |
doc.Save(outStream, Aspose.Words.SaveFormat.Docx); | |
// Save back an OLE object | |
OLE_Shape.ForeignData.ObjectData = outStream.ToArray(); | |
} | |
} | |
} | |
// Save Visio diagram | |
diagram.Save(dataDir + "ManipulateObjects_out.vsdx", SaveFileFormat.VSDX); |