Different Ways to Open Files

With Aspose.Diagram it is simple to open files, for example, to retrieve data, or to use a designer template to speed up the development process.

Opening a File via a Path

Developers can open a Microsoft Diagram file using its file path on the local computer by specifying it in the Diagram class constructor. Simply pass the path in the constructor as a string. Aspose.Diagram will automatically detect the file format type.

import aspose.diagram
from aspose.diagram import *

#// Initialize a Diagram class
diagram = Diagram(os.path.join(sourceDir, "Drawing1.vsdx"))

#// Save diagram in the VSDX format
diagram.save("CreateNewVisio_out.vsdx", SaveFileFormat.VSDX)

Opening a File via a Stream

It is also simple to open an Visio file as a stream. To do so, use an overloaded version of the constructor that takes the BufferStream object that contains the file.

import os
import sys
import aspose.diagram
from aspose.diagram import *
from aspose.pyio import BufferStream

#// Build path of an existing diagram
visioDrawing = os.path.join(sourceDir, "Drawing1.vsdx")
# Create a Stream object
f = open(visioDrawing, 'rb')
data = f.read()
databuff = BufferStream(data)
diagram = Diagram(databuff)

#// Save diagram in the VSDX format
diagram.save("Visio_out.vsdx", SaveFileFormat.VSDX)

Opening a File with LoadOptions

To open a file with loadoptions, use the LoadOptions classes to set the related options of the classes for the template file to be loaded.

import os
import sys
import aspose.diagram
from aspose.diagram import *

#// Build path of an existing diagram
visioDrawing = os.path.join(sourceDir, "Drawing1.vsdx")
# Instantiate LoadOptions specified by the LoadFileFormat
loadOptions = LoadOptions(LoadFileFormat.VSDX)
diagram = Diagram(visioDrawing,loadOptions)

#// Save diagram in the VSDX format
diagram.save("Visio_out.vsdx", SaveFileFormat.VSDX)