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image not saved or loaded with saveToFile an loadFromfile (Read 8121 times)

hans Junior Member Offline I Love MindFusion! Posts: 81 Location: Netherlands Joined: Mar 17^th, 2012	image not saved or loaded with saveToFile an loadFromfile Jan 16^th, 2013 at 2:57pm	Print Post
	When I do diagram.saveToFile(path) and then Diagram.loadFromFile(path) , all node.imagesUrls are lost. I check on the server and find that when saving the imageUrl exists, but after loading the imageUrl is lost. foreach (ShapeNode n in diagram.Nodes) { if (n.ImageUrl != null) { a = n.ImageUrl.ToString(); } }


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hans Junior Member Offline I Love MindFusion! Posts: 81 Location: Netherlands Joined: Mar 17^th, 2012	Re: image not saved or loaded with saveToFile an loadFromfile Reply #1 - Jan 16^th, 2013 at 6:23pm	Print Post
	Also images (imageURL) get lost when executing: string a = diagram.SaveToString(); diagram.LoadFromString(a);


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: image not saved or loaded with saveToFile an loadFromfile Reply #2 - Jan 17^th, 2013 at 6:57am	Print Post
	Currently this is not serialized in binary format. You could save diagrams in XML format for the time being, using the SaveToXml or SaveToString(SaveToStringFormat.Xml) methods. I hope that helps, Stoyan


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hans Junior Member Offline I Love MindFusion! Posts: 81 Location: Netherlands Joined: Mar 17^th, 2012	Re: image not saved or loaded with saveToFile an loadFromfile Reply #3 - Jan 17^th, 2013 at 2:19pm	Print Post
	I use string a = diagram.SaveToString(SaveToStringFormat.Xml,false); it results in almost the same as SaveToXml: the string has one line more at the beginning: <?xml version="1.0" encoding="utf-16"?> When I use diagram.LoadFromString(a) the images are lost. (I first have to remove the first line, otherwise error) Also LoadFromXml loses the images. The imagesUrls are present in the xml <ImageUrl>images/rijbewijs2.bmp</ImageUrl> any workaround ?


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hans Junior Member Offline I Love MindFusion! Posts: 81 Location: Netherlands Joined: Mar 17^th, 2012	Re: image not saved or loaded with saveToFile an loadFromfile Reply #4 - Jan 17^th, 2013 at 6:41pm	Print Post
	The problem seems to be with nodes for which the imageUrl is set by script, not for those set by code (asp.net c#)


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: image not saved or loaded with saveToFile an loadFromfile Reply #5 - Jan 18^th, 2013 at 8:03am	Print Post
	Calling this from the FractalLayout sample project, and then posting back and reloading worked in our test. Code var node = diagram.getFactory().createShapeNode(20, 20, 50, 50); node.setImageLocation("./Images/pic4.png"); Are you sure the image location property isn't cleared at some later point in your code?


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: image not saved or loaded with saveToFile an loadFromfile Reply #6 - Jan 18^th, 2013 at 1:29pm	Print Post
	What kind of error are you getting if you keep the xml declaration line?


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hans Junior Member Offline I Love MindFusion! Posts: 81 Location: Netherlands Joined: Mar 17^th, 2012	Re: image not saved or loaded with saveToFile an loadFromfile Reply #7 - Jan 19^th, 2013 at 1:18pm	Print Post
	The error I get when keeping the xml declaration line is: [XmlException: There is no Unicode byte order mark. Cannot switch to Unicode.] System.Xml.XmlTextReaderImpl.Throw(Exception e) +69 System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res) +105 System.Xml.XmlTextReaderImpl.CheckEncoding(String newEncodingName) +261 System.Xml.XmlTextReaderImpl.ParseXmlDeclaration(Boolean isTextDecl) +1839 System.Xml.XmlTextReaderImpl.Read() +340 System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace) +145 System.Xml.XmlDocument.Load(XmlReader reader) +107 System.Xml.XmlDocument.Load(String filename) +122 MindFusion.Diagramming.Diagram.LoadFromXml(String fileName, Boolean loadDiagramProperties) +77 MindFusion.Diagramming.Diagram.LoadFromXml(String fileName) +39 Default2.btnLoad_Click(Object sender, EventArgs e) in c:\Users\admin\Documents\Visual Studio 2012\WebSites\canvas\Default2.aspx.cs:54


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hans Junior Member Offline I Love MindFusion! Posts: 81 Location: Netherlands Joined: Mar 17^th, 2012	Re: image not saved or loaded with saveToFile an loadFromfile Reply #8 - Jan 19^th, 2013 at 1:33pm	Print Post
	I have to correct some things in this posting: This works correct, inluding ImageLocation string a = diagram.SaveToString(SaveToStringFormat.Xml, false); diagram.LoadFromString(a); This also works correct inluding ImageLocation: diagram.SaveToXml(filename) diagram.LoadFromXml(filename) My confusion was that I copied the images from one node to another by: node2.setImage(node1.getImage); The image showed well in the diagram, but got lost when saving and loading. I should have used node2.setImageLocation(node1.getImageLocation); The only issue left is: If I write a SaveToString(SaveToStringFormat.Xml) to file and load it with loadFromXML, I get the Unicode-Error. I don't use it anymore.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: image not saved or loaded with saveToFile an loadFromfile Reply #9 - Jan 20^th, 2013 at 10:18am	Print Post
	I suppose you are not saving the Xml string into a Unicode file then. If you call SaveToString(Xml) and save the string into non-unicode text file, you can still load the diagram using a symmetrical method - first read the file into a .NET String (which is always Unicode) using StreamReader.ReadToEnd method, and then call diagram.LoadFromString(theString). Alternatively just save into a Unicode16 file via the StreamWriter(path, encoding) constructor. I hope that helps, Stoyan


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