Diagramming for ASP.NET, V5.5

Here is the list of the recent changes and additions to MindFusion WebForms Diagram control:

Resize table columns and rows

Note: This feature is not available in ImageMap mode.

Columns and rows of a TableNode can now be resized interactively if its AllowResizeColumns or AllowResizeRows properties are enabled. In order to resize, move the mouse pointer to the border line on column’s right side or row’s bottom side until it shows resize cursor and start dragging. The control raises TableColumnResizing and TableRowResizing events to let you validate new size or prevent resizing some elements. The TableColumnResized and TableRowResized events are raised after the operation completes.

Diagramming for ASP.NET: Table Nodes

Diagramming for ASP.NET: Table Nodes

Canvas mode improvements

  • Shape library files and ShapeLibraryLocation properties of DiagramView and ShapeListBox can now be used in Canvas mode.
  • Items can now be deleted using Backspace key when running on Mac.
  • Caption divider line in TableNode and ContainerNode is now rendered clipped when caption height is smaller than corner radius.
  • The TooltipDelay property specifies the delay in milliseconds before showing tooltips.
  • The Orientation property of NodeListView lets you set the view’s orientation to Horizontal or Vertical (members of Orientation enum).
  • Fixed overlaps in client-side TreeLayout when arranging nodes of different sizes.
  • Fixed a bug where deserialization of custom item classes worked correctly only if their names contained Node or Link suffix.
  • MsAjaxLocation and JQueryLocation properties let you change the location of external script libraries.
Diagramming for ASP.NET: Node Shapes

Diagramming for ASP.NET: Node Shapes

ImageMap mode improvements

  • Image generator implementation changed from Page to IHttpHandler , this makes it more lightweight avoiding the full page life-cycle.
  • Image generation is now implemented by the built-in ImageHandler class inside MindFusion.Common.WebForms assembly and it no longer requires adding external .aspx file to the project. Instead, it can be listed in web.config file:
    XML
    
    
        
    
    
    
  • For convenience, there is still optional ImageGen.ashx provided as external file for easier set-up of the project (add existing file instead of changing web.config).
  • ZoomControl no longer draws using <canvas> element when running in ImageMap mode, but uses ImageHandler to generate bitmaps.

API changes

ZoomControl can now be used with other MindFusion components and has been moved to MindFusion.Common.WebForms namespace and assembly.

Here is a direct link to download the trial version:

Download MindFusion.Diagramming for ASP.NET, V5.5 Trial Version

Technical support
MindFusion support team is happy to assist you with any questions you might have about Diagramming for ASP.NET or any other of our products. You can leave a message at the discussion board, use the help desk or e-mail support@mindfusion.eu.. We strive to provide competent and detailed answers to your questions within hours of receiving them.

About Diagramming for ASP.NET: An advanced WebForms programming component that offers all the functionality that is needed for creating, styling and presenting attractive flowcharts, hierarchies, trees, graphs, schemes, diagrams and many more. The control offers numerous utility methods, path finding and cycle detection, rich event set and many useful user interaction features like tool tips, multiple selection, copy/paste to/from Windows clipboard and many more.

NetDiagram offers more than 100 predefined node shapes, scrollable tables, 13 automatic layouts and many more. You can check the online demo to see some of the features in action. The control includes many samples, detailed documentation and step-by-step tutorials. Every features is duly documented and there’s plenty of code to copy. The component is not only powerful and scalable, but easy to learn and fun to use.

WPF Diagram Control, V3.3.1 and WinForms Diagram Control, V6.3.3

MindFusion is pleased to announce the new releases of two of its popular flowchart control: Diagramming for WinForms, V6.3.3 and Diagramming for WPF, V3.3.1. Both releases have similar new features, which are listed below:

Resize table columns and rows
Columns and rows of a TableNode can now be resized interactively if its AllowResizeColumns or AllowResizeRows properties are enabled. In order to resize, move the mouse pointer to the border line on column’s right side or row’s bottom side until it shows resize cursor and start dragging. The control raises TableColumnResizing and TableRowResizing events to let you validate new size or prevent resizing some elements. The TableColumnResized and TableRowResized events are raised after the operation completes.

Barcode nodes
The BarcodeNode class displays EAN, UPC or QR barcodes as node’s content. In-place edit operations let users enter new numeric codes for 1D codes or text strings for QR codes. The barcode format is specified via the Format property, the encoded number or text is set via Content, and color of 1D bars / 2D modules via BarColor.

Barcode diagram nodes

Barcode diagram nodes

New Features in Diagramming for WPF, V3.3.1

ShapeDesigner improvements

  • The ShapeDesigner control supports undo. Call its Undo or Redo methods to respectively undo or redo a change done to the designed shape.
  • ZoomFactor property added to ShapeDesigner. It also supports interactive zoom in/out via mouse wheel.
  • The SelectedElement property exposes the graphic element currently selected in ShapeDesigner canvas. You can bind to its stroke and brush properties to create alternative user interface for editing element attributes.

Miscellaneous

  • NodeConstraints.KeepInsideDiagram prevents a node from leaving diagram boundaries during user interaction (the older RestrictItemsToBounds property does not stop nodes from leaving diagram area but returns them to original position if dropped outside).
  • dashed selection frames are now drawn in two colors and should be visible on both the default white background and custom darker backgrounds. You can change the second dash color via HandlesVisualStyle.DashBackground property.
  • set the WhileModifying flag in RoutingOptions.TriggerRerouting to reroute links while users drag their end points.
  • custom connection point classes can now override ConnectionPoint.NearestAnchorPoint to implement custom anchor point selection logic; the method is now also called at the beginning of interactive link creation.

New in Diagramming for WinForms, V6.3.3

Miscellaneous

  • the component now selects better end points for auto-routed links when using WhileCreating and WhileModifying routing modes;
  • custom connection point classes can now override ConnectionPoint.NearestAnchorPoint to implement custom anchor point selection logic; the method is now also called at the beginning of interactive link creation.
  • NodeConstraints.KeepInsideDiagram prevents a node from leaving diagram boundaries during user interaction (the older RestrictItemsToBounds property does not stop nodes from leaving diagram area but returns them to original position if dropped outside).
  • SvgNode supports SVG images with vector-effect=’non-scaling-stroke’ stroke attributes.
  • improved default Pen for dash-frame selection handles style. Dashed frames should now be visible on both the default white background and custom darker backgrounds.
  • ZoomControl can now be used with other components by MindFusion and has been moved to MindFusion.Common.WinForms assembly and namespace.

You are welcome to download the trial version for each control from the following links:

Diagramming for WinForms, V6.3.3 Trial Version Download

Diagramming for WPF, V3.3.1 Trial Version Download

If you have questions or run into problems using the components you can use the Diagramming components forum, the help desk or write us at support@mindfusion.eu. Our support team will be pleased to help you.

About MindFusion.Diagramming for WinForms: A programming component that provides any WinForms application with a full set of features for creating and customizing all types of diagrams, flowcharts, schemes, hierarchies, trees, graphs etc. The control provides numerous ways to save and load a diagram, six auxiliary controls and more than 10 automatic graph layout algorithms. Diagram elements include scrollable tables, container nodes, multi-segment arrows, custom diagram item types and many more. Further details here.

Diagramming for WinForms is a royalty-free component, clients get 12 month upgrade subscription when buying a license. The source code is also available for purchase. Visit the buy page for a list with the current license prices.

About MindFusion.Diagramming for Wpf: Designed and developed to be easy to integrate, use, and customize, this native WPF flowchart component places at your disposal every single feature you would ever need to create diagrams, graphs, schemes, org charts, DB relationships, genealogy trees, class hierarchies and many more. Its long list of style options gives you complete control over the appearance of the diagram. With a set of eight automatic layouts you are sure to find the arrangement that suits perfectly your WPF application.

The diagram control boasts a long list of events, properties and methods for user interaction, item creation, data input and output. You can read the full features list here. The online demo shows samples that demonstrate various capabilities of the control. The licensing scheme and prices are uploaded at the buy page. Source code is also available.

Diagramming for ActiveX V4.9.1 Released!

MindFusion is proud to announce the new release of its ActiveX Diagramming control. Here is an overview of the new features:

Highlight table rows
You can use the new HighlightedRow property of a Table to the index of a row that should be drawn highlighted. You can set the background of highlighted rows’ with RowHighlightColor. With the new AutoHighlightRows property, a row will be highlighted automatically when clicked.

Tables in the diagramming for ActiveX component.

Tables in the diagramming for ActiveX component.

Miscellaneous

  • VisioImporter, VisioExporter and SvgExporter has been merged into the main flowchartx.dll library file, and can now be used with its 64-bit version.
  • Set the BackColor property of ArrowLabel to fill the background of link labels.
  • Link segments now connect to the base of arrowhead shapes instead of going all the way through them, letting you use transparent and semi-transparent fill color for arrowheads without seeing segment ends inside.
  • Fixed crash in 64-bit SaveToBitmap function.

The trial version of the control is available for download from here:

Download FlowChartX 4.9.1 Trial Version

Technical support
MindFusion puts special effort in providing excellent customer support to all developers who use our components. You can write at the forum, help desk or use e-mail support@mindfusion.eu. All questions are usually answered within hours of being received.

About MindFusion.Diagramming for ActiveX: An ActiveX programming component that lets you create with ease every type of diagram, flowchart, scheme, chart, hierarchy, tree etc. The control supports rich user interaction model with advanced features like tool tips, grid alignment, docking points for nodes, scrolling and zooming and many more. FlowChartX implements 7 automatic layouts as well arrow routing. The appearance if each flowchart is completely customizable. Nodes can hold both images and text, their Z-order can be changed and there are tens of predefined shapes to choose from. Nodes support aero and glass visual effects.

The control also includes detailed documentation and many samples for a variety of languages and
platforms. You can find more about the features of the tool at the features page or check the licensing scheme and the prices here.

Database schema diagram

In this post we’ll show how to use TableNode objects to display tabular data, more specifically database schema information. A Visual Studio sample project containing the code from this post is available for download here:

DatabaseSchema.zip

To start, create a new Windows Forms application, and place a text field for connection string, a button and a DiagramView on the form. In the code-behind file, add following field to map table name to respective TableNode objects:

Dictionary tables = new Dictionary();

Add a RectangleF that stores default size passed to CreateTableNode method:

RectangleF defaultSize = new RectangleF(0, 0, 30, 30);

Create a ReadTables method, which provided an SqlConnection, parses its schema information and creates diagram nodes:

void ReadTables(SqlConnection connection)
{
	// get table schema definitions from connection
	var schema = connection.GetSchema("Tables");
	foreach (DataRow row in schema.Rows)
	{
		// fetch table name
		var name = row["TABLE_NAME"].ToString();

		// create respective node
		var table = diagram.Factory.CreateTableNode(defaultSize);
		table.Caption = name;
		table.Shape = SimpleShape.RoundedRectangle;
		table.Brush = new MindFusion.Drawing.SolidBrush(Color.LightGray);

		// register node in dictionary for future foreign key reference
		tables[name.Replace(" ", "_")] = table;
		ReadFields(table, connection,
			row["TABLE_CATALOG"].ToString(), null, name);
	}

	ReadForeignKeys(connection);
}

The ReadFields method takes table node and name parameters and creates node cells that will show information for the column name and type of database tables:

void ReadFields(TableNode node,
	SqlConnection connection, string db, string owner, string tableName)
{
	// remove default cells
	node.RowCount = 0;

	// reserve one column for name and one for data type
	node.ColumnCount = 2;

	// read column definitions of specified table
	var schema = connection.GetSchema("Columns", new[] { db, owner, tableName });
	foreach (DataRow row in schema.Rows)
	{
		// add a new row to the node
		int r = node.AddRow();

		// set cells' text to the column name and type
		node[0, r].Text = row["COLUMN_NAME"].ToString();
		node[1, r].Text = row["DATA_TYPE"].ToString();

	}

	// make table cells big enough to show all text
	node.ResizeToFitText(false);
}

The ReadForeignKeys method creates DiagramLink connectors between table nodes to show the relationships between database tables:

void ReadForeignKeys(SqlConnection connection)
{
	var schema = connection.GetSchema("ForeignKeys");
	foreach (DataRow row in schema.Rows)
	{
		// read foreign key information
		string fkName = row["CONSTRAINT_NAME"].ToString();
		string tableName = row["TABLE_NAME"].ToString().Replace(" ", "_");
		string prefix = "FK_" + tableName + "_";
		if (fkName.StartsWith(prefix))
		{
			string targetName = fkName.Substring(prefix.Length);

			// get table nodes registered for specified names
			if (tables.ContainsKey(targetName) && tables.ContainsKey(tableName))
			{
				var table = tables[tableName];
				var targetTable = tables[targetName];

				// create a link between the nodes to show relationship
				diagram.Factory.CreateDiagramLink(table, targetTable);
			}
		}
	}
}

Finally handle the button’s click event to open specified connection and call ReadTables. Apply AnnealLayout to arrange the tables so that they do not overlap:

private void btnOpen_Click(object sender, System.EventArgs e)
{
	diagram.ClearAll();

	try
	{
		var connection = new SqlConnection(tbConnection.Text);
		connection.Open();

		// read schema and create corresponding diagram items
		ReadTables(connection);

		connection.Close();
	}
	catch (Exception exception)
	{
		MessageBox.Show(exception.Message);
		diagram.ClearAll();
	}

	// arrange the tables to remove overlaps
	var layout = new AnnealLayout();
	layout.SplitGraph = true;
	layout.Randomize = false;
	layout.MultipleGraphsPlacement = MultipleGraphsPlacement.MinimalArea;
	layout.Margins = new SizeF(10, 10);
	layout.Arrange(diagram);
}

If you run the project and open the Northwind sample database by Microsoft, you should see this diagram:

database schema layout

The code above uses MindFusion’s .NET API and can be used with Windows Forms, WPF, Silverlight and ASP.NET diagramming components. The Java API for Android and desktop Swing application will look similar, with setter method calls instead of property assignments.

You can download the trial version of any MindFusion.Diagramming component from this page.

Enjoy!

Diagramming for ActiveX 4.6 Beta

MindFusion has just released a new beta version of its popular diagramming component for ActiveX. We have added a ruler control, table footers and more. Here are the details:

Ruler control

The Ruler control provides horizontal and vertical scales that help users measure flowchart items. It tracks mouse movements and modifications being performed on an item and displays markers over the scales that indicate the current position in the diagram coordinate system. You can align several items by selecting them, clicking on a scale and then dragging.  If no items are selected all items are aligned.

Preserve order in tree layout

If you enable the new PreserveOrder property of the TreeLayout, the layout object will preserve the original geometric order of child nodes when arranging them under their parent. This can be used to arrange tree branches in a specific order by first positioning them in increasing horizontal or vertical positions.

Tree Layout

Tree Layout

Table footers

Table nodes can display footer text with the new Footer property. You can customize the footer with the FooterHeight, FooterStyle, FooterColor and FooterFillColor properties.

Table Nodes

Table Nodes

Miscellaneous

  • setting Behavior to bhSelectOnly allows user only to select existing items, but not to modify them or draw new ones
  • PrintOptions.HeaderFont specifies the font of the header in a printed page
  • intermediate arrowhead shapes rendered for Bézier links
  • and more

You can read more about the new features of this release of FlowChartX at the news section of the forum. The beta version of the control is also available – you can download it from here:

Download Diagramming for ActiveX 4.6 Beta

About MindFusion.Diagramming for ActiveX: An ActiveX programming component that lets you create with ease every type of diagram, flowchart, scheme, chart, hierarchy, tree etc. The control supports rich user interaction model with advanced features like tool tips, grid alignment, docking points for nodes, scrolling and zooming and many more. FlowChartX implements 7 automatic layouts as well arrow routing. The appearance if each flowchart is completely customizable. Nodes can hold both images and text, their Z-order can be changed and there are tens of predefined shapes to choose from.

The control also includes detailed documentation and many samples for a variety of languages and platforms. You can find more about the features of the tool at the features page or check the licensing scheme and the prices here.