| Chapter 4. Input and Output | ||
|---|---|---|
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Table of Contents
This chapter presents various file formats that are supported with yFiles.NET as graph exchange and graph export formats, respectively. It also explains which classes to use for reading and writing graph structure data and how to prepare a graph for image export.
The GraphML file format presents the native graph exchange format supported by
yFiles.NET.
Classes from the yWorks.Canvas.IO
namespace provide
the functionality for exporting the contents of a
GraphControl to a variety of image
file formats, both vector graphics or bitmap-based.
Table 4.1, “Graph exchange and export file formats” lists the features of all yFiles.NET graph exchange and export file formats.
Table 4.1. Graph exchange and export file formats
| Format Name (Abbreviation) | Human Readable | Type | Note |
|---|---|---|---|
| GraphML | Yes | Exchange | XML-based |
| EMF | No | Export (Vector Graphics) | |
| BMP, GIF, JPG, PNG, TIFF | No | Export (Bitmap) |
Provided by class PixelImageExporter.
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Beyond the graph structure, graph exchange format GraphML also supports all
visual attributes directly related to the representation of graph elements.
In particular, this includes the styles for nodes, edges, ports, etc. which are
defined by interfaces
INodeStyle,
IEdgeStyle,
IPortStyle, etc.
However, GraphML provides no direct support for further visual aspects like,
e.g., zoom level, selection state, or a background image.
In contrast, the graph export formats fully support these visual aspects.
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