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5/13/2005 7:04:55 PM

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4 Items, 1 Pages 1 |< << Go >> >|

	Salameh
	Asp.Net User

property changed event

5/13/2005 7:04:55 PM

0/0

how can you call a function when the value of a property is changed in the designer window. How would you define your property to do this

	PLBlum
	Asp.Net User

Re: property changed event

5/14/2005 4:10:40 PM

0/0

Take a look at the UITypeEditor class in the .net docs. You subclass this to provide a specific editor that intercepts attempts to edit a property and provides a user interface. My site has a few of these classes in C# that show you how to do a few things: http://www.peterblum.com/UITypeEditors/UITypeEditorsHome.aspx

--- Peter Blum
Creator of Professional Validation And More Suite, Peter's Date Package, and Peter's Polling Package
www.PeterBlum.com

	Salameh
	Asp.Net User

Re: property changed event

5/15/2005 3:34:23 AM

0/0

Partially understand the idea of uitypeeditor. You capture the edit of a particular property. I however want to change additonal properties contained in the class based on a particular property changed. Seems you only have access to the property the uitypeeditor is connected to. How do you access the addtional properties contained in the class.

public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, IServiceProvider provider, object value)

{

value=

}

	PLBlum
	Asp.Net User

Re: property changed event

5/15/2005 7:32:03 PM

0/0

I have never done this through a UITypeEditor. My only experience is as follows.

I had one property that when set to a specific value, also set another property on the same object. For example:

public bool SuperProperty
{
   get { return fSuperProperty; }
   set
   {
      fSuperProperty = value;
      if (value)
         OtherProperty = 0; // this is the second property that is modified.
    }
}

The problem is that the Property Editor does not always write out the second property when you change it. (I have assigned [NotifyParentProperty(true)] attribute to both properties and still wasn't happy with the results.)

My experience with the Properties Editor is that there is plenty more we custom control developers need from it.

You can add an item to the context menu on your control using the ControlDesigner's Verb feature. In your menu command, you can open a Window Form (designed and developed by you) which allows you to edit anything.

--- Peter Blum
Creator of Professional Validation And More Suite, Peter's Date Package, and Peter's Polling Package
www.PeterBlum.com

4 Items, 1 Pages 1 |< << Go >> >|

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PropertyChangeEvent (Java 2 Platform SE v1.4.2) An event source may send a null object as the name to indicate that an arbitrary set of if its properties have changed. In this case the old and new values ...
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