Hello:
I've seen code in some books for databinding that handles attaching Attributes
to
Properties during runtime...which is very close (but no cigar) to what I am
looking for...
The code in the book was basically the following:
override protected void PreFilterProper ties(IDictionar y properties) {
base.PreFilterP roperties(prope rties);
PropertyDescrip tor prop = (PropertyDescri ptor)properties["DataSource "];
if(prop!=null) {
System.Componen tModel.Attribut eCollection runtimeAttribut es =
prop.Attributes ;
// make a copy of the original attributes but make room for one extra
attribute
//ie the TypeConverter attribute
Attribute[] attrs = new Attribute[runtimeAttribut es.Count + 1];
runtimeAttribut es.CopyTo(attrs , 0);
attrs[runtimeAttribut es.Count] = new
TypeConverterAt tribute(typeof( DataSourceConve rter));
prop = TypeDescriptor. CreateProperty( this.GetType(), "DataSource ",
typeof(string), attrs);
properties["DataSource "] = prop;
}...
Although this is not what I want -- it intrigues me, because one of the things I
wish to do is change the Designer attribute on a Control on the fly --
specifically, to change a Control's ControlDesigner attribute from standard
ControlDesigner to ReadWriteDesign er --- and back again -- to get around the
limitations that are in the IDE...
Only problem is that I don't see anywhere in the Framwork where to SET
attributes... I can read them, and can append to them as above snippet shows:
System.Componen tModel.Attribut eCollection attrsExist = o.GetType().Att ributes;
It's just the last line that I am missing....Some thing that would look like:
o.SetAttributes (attrsNew);
Any hope for this to succeed? I mean ANY way? Even if a nightmare....?
Thank you ,
Sky
2  2929 
You cannot modify the attributes of a compiled type in an assembly.
--
Jared Parson [MSFT] ja******@online .microsoft.com
This posting is provided "AS IS" with no warranties, and confers no rights.
Use of included script samples are subject to the terms specified at http://www.microsoft.com/info/cpyright.htm
"S.Sigal" <as*******@xa ct-solutions.remov ethis.com> wrote in message
news:eL******** ******@TK2MSFTN GP11.phx.gbl... Hello:
I've seen code in some books for databinding that handles attaching
Attributes to
Properties during runtime...which is very close (but no cigar) to what I
am looking for...
The code in the book was basically the following:
override protected void PreFilterProper ties(IDictionar y properties) {
base.PreFilterP roperties(prope rties);
PropertyDescrip tor prop = (PropertyDescri ptor)properties["DataSource "];
if(prop!=null) {
System.Componen tModel.Attribut eCollection runtimeAttribut es =
prop.Attributes ;
// make a copy of the original attributes but make room for one
extra attribute
//ie the TypeConverter attribute
Attribute[] attrs = new Attribute[runtimeAttribut es.Count + 1];
runtimeAttribut es.CopyTo(attrs , 0);
attrs[runtimeAttribut es.Count] = new
TypeConverterAt tribute(typeof( DataSourceConve rter));
prop = TypeDescriptor. CreateProperty( this.GetType(), "DataSource ",
typeof(string), attrs);
properties["DataSource "] = prop;
}...
Although this is not what I want -- it intrigues me, because one of the
things I wish to do is change the Designer attribute on a Control on the
fly -- specifically, to change a Control's ControlDesigner attribute from
standard ControlDesigner to ReadWriteDesign er --- and back again -- to get
around the limitations that are in the IDE...
Only problem is that I don't see anywhere in the Framwork where to SET
attributes... I can read them, and can append to them as above snippet
shows:
System.Componen tModel.Attribut eCollection attrsExist =
o.GetType().Att ributes;
It's just the last line that I am missing....Some thing that would look
like:
o.SetAttributes (attrsNew);
Any hope for this to succeed? I mean ANY way? Even if a nightmare....?
Thank you ,
Sky
Thanks Jared.
It's what I suspected, but was hoping someone would prove me wrong...
Sky
"Jared Parsons [MSFT]" <ja******@onlin e.microsoft.com > wrote in message
news:eU******** ******@TK2MSFTN GP15.phx.gbl... You cannot modify the attributes of a compiled type in an assembly.
--
Jared Parson [MSFT]
ja******@online .microsoft.com
This posting is provided "AS IS" with no warranties, and confers no rights.
Use of included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm
"S.Sigal" <as*******@xa ct-solutions.remov ethis.com> wrote in message
news:eL******** ******@TK2MSFTN GP11.phx.gbl... Hello:
I've seen code in some books for databinding that handles attaching
Attributes to
Properties during runtime...which is very close (but no cigar) to what I am
looking for...
The code in the book was basically the following:
override protected void PreFilterProper ties(IDictionar y properties) {
base.PreFilterP roperties(prope rties);
PropertyDescrip tor prop = (PropertyDescri ptor)properties["DataSource "];
if(prop!=null) {
System.Componen tModel.Attribut eCollection runtimeAttribut es =
prop.Attributes ;
// make a copy of the original attributes but make room for one extra
attribute
//ie the TypeConverter attribute
Attribute[] attrs = new Attribute[runtimeAttribut es.Count + 1];
runtimeAttribut es.CopyTo(attrs , 0);
attrs[runtimeAttribut es.Count] = new
TypeConverterAt tribute(typeof( DataSourceConve rter));
prop = TypeDescriptor. CreateProperty( this.GetType(), "DataSource ",
typeof(string), attrs);
properties["DataSource "] = prop;
}...
Although this is not what I want -- it intrigues me, because one of the
things I wish to do is change the Designer attribute on a Control on the
fly -- specifically, to change a Control's ControlDesigner attribute from
standard ControlDesigner to ReadWriteDesign er --- and back again -- to get
around the limitations that are in the IDE...
Only problem is that I don't see anywhere in the Framwork where to SET
attributes... I can read them, and can append to them as above snippet shows:
System.Componen tModel.Attribut eCollection attrsExist =
o.GetType().Att ributes;
It's just the last line that I am missing....Some thing that would look like:
o.SetAttributes (attrsNew);
Any hope for this to succeed? I mean ANY way? Even if a nightmare....?
Thank you ,
Sky
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