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Validating data in Mindfusion Diagrams (Read 1957 times)

samrat.ghose YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 2 Joined: Nov 19^th, 2009	Validating data in Mindfusion Diagrams Nov 19^th, 2009 at 12:02pm	Print Post
	Hi, We are using MindFusion WPF diagram to create forms with controls such as textbox , combobox etc in them. We are setting the minlength and maxlength for the controls say a textbox. Now when the user inputs data how do we vaidate the data the user has entered for minlength , maxlength. Does mindfusion provide any programmatic APIs for data validation? Thanx in advance.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Validating data in Mindfusion Diagrams Reply #1 - Nov 19^th, 2009 at 12:31pm	Print Post
	Hi, The control does not provide any built-in validation. If you have some WPF bindings attached to the hosted controls, you could add ValidationRules to these bindings and display validation errors using the System.Windows.Controls.Validation class. Stoyan


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samrat.ghose YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 2 Joined: Nov 19^th, 2009	Re: Validating data in Mindfusion Diagrams Reply #2 - Nov 19^th, 2009 at 12:37pm	Print Post
	Hi , Thanks for the reply. We are saving the mindfusion diagram as xml and then using the following API of midfusion diagram WpfDiagram.LoadFromString(this.FormXml); to generate the screen . 'FormXml' contains all the controls and values along with atributes such as 'minmaxlength' . Is there a way to validate the data entered in these controls against the stored validation attributes.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Validating data in Mindfusion Diagrams Reply #3 - Nov 19^th, 2009 at 12:55pm	Print Post
	Hi, After loading, you could loop over all nodes and add some bindings to their hosted controls: Code TextBox textBox = (node as DiagramNodeAdapter).UIElement as TextBox; if (textBox != null) { Binding binding = new Binding("Value"); // assuming Tag objects have a Value property binding.Source = node.Tag; // todo: add validation rules here textBox.SetBinding(TextBox.TextProperty, binding); } This MSDN topic shows how to create a min/max rule, which you can add to the ValidationRules collection of the "binding" object. http://msdn.microsoft.com/en-us/library/system.windows.data.binding.validationru... I hope that helps, Stoyan


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