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Custome Property Editor

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58001 Mar 15,2007 04:26 PM UTC Mar 15,2007 06:15 PM UTC WinForms 1
Tags: Diagram
Administrator [Syncfusion]
Asked On March 15, 2007 04:26 PM UTC

Hi, is it possible to show the node properties in the property edit window.i have two collection as shown in the code, both are IList. Is it possible to show them in the property window.

public class Node : Symbol

private IList NodeParameterCollection; ///1
private IList Collection=null; ///2

Thank you.

J.Nagarajan [Syncfusion]
Replied On March 15, 2007 06:15 PM UTC

Hi Ali,

Yes you can show the node's properties that you wish to expose to in property grid. You can use PropertyDescriptorCollection class to achieve this. Please refer to the following code snippet

public class MySymbolConverter : System.ComponentModel.TypeConverter
public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
return base.ConvertTo(context, culture, value, destinationType);

public override bool GetPropertiesSupported(ITypeDescriptorContext context)
return true;

public override PropertyDescriptorCollection GetProperties(ITypeDescriptorContext context, object value, Attribute[] attributes)
System.Attribute[] attrs = new System.Attribute[]
new System.ComponentModel.BrowsableAttribute(true)

PropertyDescriptor[] props = new PropertyDescriptor[4];
props[0] = TypeDescriptor.CreateProperty(typeof(MySymbol), "Name", typeof(string), attrs);
props[1] = TypeDescriptor.CreateProperty(typeof(MySymbol), "ClickCount", typeof(int), attrs);
props[2] = TypeDescriptor.CreateProperty(typeof(MySymbol), "Labels", typeof(LabelCollection), attrs);
props[3] = TypeDescriptor.CreateProperty(typeof(MySymbol), "DefaultLabelName", typeof(string), attrs);
return new PropertyDescriptorCollection(props);

// This code returns all browsable properties
return TypeDescriptor.GetProperties(value, attrs);


Also refer to our Custom Symbol sample( \\Windows\Diagram.Windows\Samples\Symbol Design\CustomSymbol) that demonstrates this completely.

Let me know if you have any questions.



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