Hi,
I have implemented the IExtenderProvid er interface (and inherited from
Component) in a class that I am using with ASP.NET controls. The field
shows up fine in the VS.NET properties grid, however the value are not
persisted anywhere (I would have expected it to show up in the VS.NET
designer portion of the code), and disapear from the properties page after
compiling. I can manually set it from the code using
provider.SetWha tever(control, object) so I don't think it is not a problem
with the component code.
Any ideas whould be appreciated.
Thanks,
Steven
5  1422 
I'm assuming that you have not used a hashtable to associate the value with
the object that owns it.
The Setxxx and Getxxx methods will not store the information automatically.
The following snippet is from a custom tooltip control. Note how each
property is stored in a hashtable with the key being the reference to the
control that has had it's properties extended.
//A utility routing to extract tipData from the hash table using the
//Control reference as a key.
protected tipData GetItem(Control c)
{
if(this._items. Contains(c))
return (tipData)_items[c];
tipData td=new tipData();
_items[c]=td;
c.MouseHover+=n ew EventHandler(c_ MouseHover);
c.MouseLeave+=n ew EventHandler(c_ MouseLeave);
return td;
}
public void SetTipText(Cont rol c, string value)
{
tipData td=GetItem(c);
td.Text=value;
}
public string GetTipText(Cont rol c)
{
tipData td=GetItem(c);
return td.Text;
}
--
Bob Powell [MVP]
C#, System.Drawing
The November edition of Well Formed is now available.
Learn how to create Shell Extensions in managed code. http://www.bobpowell.net/currentissue.htm
Answer those GDI+ questions with the GDI+ FAQ http://www.bobpowell.net/gdiplus_faq.htm
Read my Blog at http://bobpowelldotnet.blogspot.com
"Steven" <ms******@berko vitz.org> wrote in message
news:eO******** *******@TK2MSFT NGP11.phx.gbl.. . Hi,
I have implemented the IExtenderProvid er interface (and inherited from
Component) in a class that I am using with ASP.NET controls. The field
shows up fine in the VS.NET properties grid, however the value are not
persisted anywhere (I would have expected it to show up in the VS.NET
designer portion of the code), and disapear from the properties page after
compiling. I can manually set it from the code using
provider.SetWha tever(control, object) so I don't think it is not a problem
with the component code.
Any ideas whould be appreciated.
Thanks,
Steven
I am using a hashtable to store each instance, however I do not have a
GetItem method - could this be the problem?
"Bob Powell [MVP]" <bob@_spamkille r_bobpowell.net > wrote in message
news:O3******** ******@TK2MSFTN GP11.phx.gbl... I'm assuming that you have not used a hashtable to associate the value
with the object that owns it.
The Setxxx and Getxxx methods will not store the information
automatically. The following snippet is from a custom tooltip control. Note how each
property is stored in a hashtable with the key being the reference to the
control that has had it's properties extended.
//A utility routing to extract tipData from the hash table using the
//Control reference as a key.
protected tipData GetItem(Control c)
{
if(this._items. Contains(c))
return (tipData)_items[c];
tipData td=new tipData();
_items[c]=td;
c.MouseHover+=n ew EventHandler(c_ MouseHover);
c.MouseLeave+=n ew EventHandler(c_ MouseLeave);
return td;
}
public void SetTipText(Cont rol c, string value)
{
tipData td=GetItem(c);
td.Text=value;
}
public string GetTipText(Cont rol c)
{
tipData td=GetItem(c);
return td.Text;
}
--
Bob Powell [MVP]
C#, System.Drawing
The November edition of Well Formed is now available.
Learn how to create Shell Extensions in managed code.
http://www.bobpowell.net/currentissue.htm
Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/gdiplus_faq.htm
Read my Blog at http://bobpowelldotnet.blogspot.com
"Steven" <ms******@berko vitz.org> wrote in message
news:eO******** *******@TK2MSFT NGP11.phx.gbl.. . Hi,
I have implemented the IExtenderProvid er interface (and inherited from
Component) in a class that I am using with ASP.NET controls. The field
shows up fine in the VS.NET properties grid, however the value are not
persisted anywhere (I would have expected it to show up in the VS.NET
designer portion of the code), and disapear from the properties page
after compiling. I can manually set it from the code using
provider.SetWha tever(control, object) so I don't think it is not a
problem with the component code.
Any ideas whould be appreciated.
Thanks,
Steven
Oops.. I wasn't paying enough attention to realize that GetItem is just
being called from SetXX and GetXX.
"Bob Powell [MVP]" <bob@_spamkille r_bobpowell.net > wrote in message
news:O3******** ******@TK2MSFTN GP11.phx.gbl... I'm assuming that you have not used a hashtable to associate the value
with the object that owns it.
The Setxxx and Getxxx methods will not store the information
automatically. The following snippet is from a custom tooltip control. Note how each
property is stored in a hashtable with the key being the reference to the
control that has had it's properties extended.
//A utility routing to extract tipData from the hash table using the
//Control reference as a key.
protected tipData GetItem(Control c)
{
if(this._items. Contains(c))
return (tipData)_items[c];
tipData td=new tipData();
_items[c]=td;
c.MouseHover+=n ew EventHandler(c_ MouseHover);
c.MouseLeave+=n ew EventHandler(c_ MouseLeave);
return td;
}
public void SetTipText(Cont rol c, string value)
{
tipData td=GetItem(c);
td.Text=value;
}
public string GetTipText(Cont rol c)
{
tipData td=GetItem(c);
return td.Text;
}
--
Bob Powell [MVP]
C#, System.Drawing
The November edition of Well Formed is now available.
Learn how to create Shell Extensions in managed code.
http://www.bobpowell.net/currentissue.htm
Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/gdiplus_faq.htm
Read my Blog at http://bobpowelldotnet.blogspot.com
"Steven" <ms******@berko vitz.org> wrote in message
news:eO******** *******@TK2MSFT NGP11.phx.gbl.. . Hi,
I have implemented the IExtenderProvid er interface (and inherited from
Component) in a class that I am using with ASP.NET controls. The field
shows up fine in the VS.NET properties grid, however the value are not
persisted anywhere (I would have expected it to show up in the VS.NET
designer portion of the code), and disapear from the properties page
after compiling. I can manually set it from the code using
provider.SetWha tever(control, object) so I don't think it is not a
problem with the component code.
Any ideas whould be appreciated.
Thanks,
Steven
Yeah, it was just a little optimization I threw in.
Is your extender-povider working now??
--
Bob Powell [MVP]
C#, System.Drawing
The November edition of Well Formed is now available.
Learn how to create Shell Extensions in managed code. http://www.bobpowell.net/currentissue.htm
Answer those GDI+ questions with the GDI+ FAQ http://www.bobpowell.net/gdiplus_faq.htm
Read my Blog at http://bobpowelldotnet.blogspot.com
"Steven" <ms******@berko vitz.org> wrote in message
news:OS******** ********@TK2MSF TNGP12.phx.gbl. .. Oops.. I wasn't paying enough attention to realize that GetItem is just
being called from SetXX and GetXX.
"Bob Powell [MVP]" <bob@_spamkille r_bobpowell.net > wrote in message
news:O3******** ******@TK2MSFTN GP11.phx.gbl... I'm assuming that you have not used a hashtable to associate the value
with the object that owns it.
The Setxxx and Getxxx methods will not store the information
automatically. The following snippet is from a custom tooltip control. Note how each
property is stored in a hashtable with the key being the reference to
the control that has had it's properties extended.
//A utility routing to extract tipData from the hash table using the
//Control reference as a key.
protected tipData GetItem(Control c)
{
if(this._items. Contains(c))
return (tipData)_items[c];
tipData td=new tipData();
_items[c]=td;
c.MouseHover+=n ew EventHandler(c_ MouseHover);
c.MouseLeave+=n ew EventHandler(c_ MouseLeave);
return td;
}
public void SetTipText(Cont rol c, string value)
{
tipData td=GetItem(c);
td.Text=value;
}
public string GetTipText(Cont rol c)
{
tipData td=GetItem(c);
return td.Text;
}
--
Bob Powell [MVP]
C#, System.Drawing
The November edition of Well Formed is now available.
Learn how to create Shell Extensions in managed code.
http://www.bobpowell.net/currentissue.htm
Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/gdiplus_faq.htm
Read my Blog at http://bobpowelldotnet.blogspot.com
"Steven" <ms******@berko vitz.org> wrote in message
news:eO******** *******@TK2MSFT NGP11.phx.gbl.. . Hi,
I have implemented the IExtenderProvid er interface (and inherited from
Component) in a class that I am using with ASP.NET controls. The
field shows up fine in the VS.NET properties grid, however the value are not
persisted anywhere (I would have expected it to show up in the VS.NET
designer portion of the code), and disapear from the properties page
after compiling. I can manually set it from the code using
provider.SetWha tever(control, object) so I don't think it is not a problem with the component code.
Any ideas whould be appreciated.
Thanks,
Steven
No it still wont save the state.. There are similar posts around with no
answers either. Funny, when I use almost the identical code with a windows
form it works fine.
"Bob Powell [MVP]" <bob@_spamkille r_bobpowell.net > wrote in message
news:eU******** ******@TK2MSFTN GP10.phx.gbl... Yeah, it was just a little optimization I threw in.
Is your extender-povider working now??
--
Bob Powell [MVP]
C#, System.Drawing
The November edition of Well Formed is now available.
Learn how to create Shell Extensions in managed code.
http://www.bobpowell.net/currentissue.htm
Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/gdiplus_faq.htm
Read my Blog at http://bobpowelldotnet.blogspot.com
"Steven" <ms******@berko vitz.org> wrote in message
news:OS******** ********@TK2MSF TNGP12.phx.gbl. .. Oops.. I wasn't paying enough attention to realize that GetItem is just
being called from SetXX and GetXX.
"Bob Powell [MVP]" <bob@_spamkille r_bobpowell.net > wrote in message
news:O3******** ******@TK2MSFTN GP11.phx.gbl... I'm assuming that you have not used a hashtable to associate the value
with the object that owns it.
The Setxxx and Getxxx methods will not store the information
automatically. The following snippet is from a custom tooltip control. Note how each
property is stored in a hashtable with the key being the reference to the control that has had it's properties extended.
//A utility routing to extract tipData from the hash table using the
//Control reference as a key.
protected tipData GetItem(Control c)
{
if(this._items. Contains(c))
return (tipData)_items[c];
tipData td=new tipData();
_items[c]=td;
c.MouseHover+=n ew EventHandler(c_ MouseHover);
c.MouseLeave+=n ew EventHandler(c_ MouseLeave);
return td;
}
public void SetTipText(Cont rol c, string value)
{
tipData td=GetItem(c);
td.Text=value;
}
public string GetTipText(Cont rol c)
{
tipData td=GetItem(c);
return td.Text;
}
--
Bob Powell [MVP]
C#, System.Drawing
The November edition of Well Formed is now available.
Learn how to create Shell Extensions in managed code.
http://www.bobpowell.net/currentissue.htm
Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/gdiplus_faq.htm
Read my Blog at http://bobpowelldotnet.blogspot.com
"Steven" <ms******@berko vitz.org> wrote in message
news:eO******** *******@TK2MSFT NGP11.phx.gbl.. .
> Hi,
>
> I have implemented the IExtenderProvid er interface (and inherited
from > Component) in a class that I am using with ASP.NET controls. The field > shows up fine in the VS.NET properties grid, however the value are
not > persisted anywhere (I would have expected it to show up in the
VS.NET > designer portion of the code), and disapear from the properties page
after > compiling. I can manually set it from the code using
> provider.SetWha tever(control, object) so I don't think it is not a
problem > with the component code.
>
> Any ideas whould be appreciated.
>
> Thanks,
>
> Steven
>
>
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I have implemented the IExtenderProvider interface (and inherited from
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