Somebody please explain the following Class Declaration

[Chris Lane]

public class ParticipantRadioButton :
System.Web.UI.HtmlControls.HtmlInputRadioButton, IPostBackDataHandler {

bool IPostBackDataHandler.LoadPostData( string postDataKey,
NameValueCollection postCollection ) {
bool result = false;
string postedValue = postCollection[this.RenderedNameAttribute];
if (postedValue != null && postedValue == this.Value) {
if ( this.Checked) {
return result;
}
this.Checked = true;
result = true;
}
else if (this.Checked) {
this.Checked = false;
}
return result;
}

Is this class Inheriting HtmlInputRadioButton and Implementing
IPostBackDatahandler?

If so how is this possible since HtmlInputRadioButton already implements
the IPostBackDatahandler interface?

And Last but not least how do I do this in VB.Net if you know?

[Christof Nordiek]

"Chris Lane" <Ch*******@discussions.microsoft.com> schrieb im Newsbeitrag
news:96**********************************@microsof t.com...

public class ParticipantRadioButton :
System.Web.UI.HtmlControls.HtmlInputRadioButton, IPostBackDataHandler {

bool IPostBackDataHandler.LoadPostData( string postDataKey,
NameValueCollection postCollection ) {
bool result = false;
string postedValue = postCollection[this.RenderedNameAttribute];
if (postedValue != null && postedValue == this.Value) {
if ( this.Checked) {
return result;
}
this.Checked = true;
result = true;
}
else if (this.Checked) {
this.Checked = false;
}
return result;
}

Is this class Inheriting HtmlInputRadioButton and Implementing
IPostBackDatahandler?
Yes!
If so how is this possible since HtmlInputRadioButton already implements
the IPostBackDatahandler interface?
If HtmlInputRadioButton implements IPostBackDataHandler, then its derived
classes
als implement it (implicitly).
Naming IPostBackDataHandler in tha class header makes it possible to
defining
new implentations for the Interface members as is done with
IPostBackDataHandler.LoadPostData

And Last but not least how do I do this in VB.Net if you know?

Should be something like that:

Public Class ParticipantRadioButton
Inherits System.....RadioButton
Implements IPostBackHandler
......
Private Function LoadPostData(........) Implements
IPostBackDataHandler.LoadPostData
.....
End Function
......
End Class

Hope that helps
Christof

[Chris Lane]

> Should be something like that:

Public Class ParticipantRadioButton
Inherits System.....RadioButton
Implements IPostBackHandler

Thanks but for some reason the ide is giving me this error even though this
should work.

Interface 'System.Web.UI.IPostBackDataHandler' is already implemented by
base class 'System.Web.UI.HtmlControls.HtmlInputRadioButton'.

I will post in the VB.Net newgroup if I can't figure it out.

Thank You!