C# Enabling/Disabling fields in PropertyGrid -

-

i developing user control library, in need provide programmer, property grid customize properties of control.
if programmer uses system.windows.forms.propertygrid (or visual studio's designer)
of property fields in system.windows.forms.propertygrid should enabled/disabled depending on other property of same user control.
how it?

example scenario

this not actual example, illustration only.
ex: usercontrol1has 2 custom properties:
myprop_caption: string
,
myprop_caption_visible: bool
now, myprop_caption should enabled in propertygrid when myprop_caption_visible true.

sample code usercontrol1

public class usercontrol1: usercontrol <br/> {     public usercontrol1()     {         // skipping details         // label1 system.windows.forms.label         initializecomponent();     }     [category("my prop"),      browsable(true),      description("get/set caption."),      defaultvalue(typeof(string), "[set caption here]"),      refreshproperties(refreshproperties.all),      readonly(false)]     public string myprop_caption     {                 {             return label1.text;         }         set         {             label1.text = value;          }     }     [category("my prop"),      browsable(true),      description("show/hide caption."),      defaultvalue(true)]     public bool myprop_caption_visible     {                 {             return label1.visible;         }         set         {             label1.visible = value;             // added solution:             // additional stuff enable/disable              // myprop_caption prop in propertygrid depending on value              propertydescriptor propdescr = typedescriptor.getproperties(this.gettype())["myprop_caption"];             readonlyattribute attr = propdescr.attributes[typeof(readonlyattribute)] readonlyattribute;             if (attr != null)             {                  system.reflection.fieldinfo afield = attr.gettype().getfield("isreadonly", system.reflection.bindingflags.nonpublic | system.reflection.bindingflags.instance);                  afield.setvalue(attr, !label1.visible);             }                     }     } }

sample code propertygrid on usercontrol1

  • tstfrm simple form following 2 data members

        private system.windows.forms.propertygrid propertygrid1;     private usercontrol1 usercontrol11;

and can customize usercontrol1 through propertygrid1 below:

public partial class tstfrm : form {     public tstfrm()     {         // tstfrm embeds propertygrid propertygrid1         initializecomponent();         propertygrid1.selectedobject = usercontrol11;     } }

how enable/disable field myprop_caption in property grid depending on value of myprop_caption_visible?

(answered op in question edit. converted community wiki answer. see question no answers, issue solved in comments (or extended in chat) )

the op wrote:

solved!

thanks @simon mourier! posting edited code. result:

enableddisabled


Comments

Post a Comment

Popular posts from this blog

c# - How Configure Devart dotConnect for SQLite Code First? -

-
can configure following sample code ? when run following code, error : no entity framework provider found ado.net provider invariant name 'devart.data.sqlite' setting in machine.config <system.data> <dbproviderfactories> <add name="dotconnect sqlite" invariant="devart.data.sqlite" description="devart dotconnect sqlite" type="devart.data.sqlite.sqliteproviderfactory, devart.data.sqlite, version=4.6.287.0, culture=neutral, publickeytoken=09af7300eec23701" /> </dbproviderfactories> </system.data> after add below block code in app.config <?xml version="1.0"?> <configuration>   <configsections> <!-- more information on entity framework configuration, visit http://go.microsoft.com/fwlink/?linkid=237468 --> <section name="entityframework" type="system.data.entity.internal.configfile.entityframeworksection, entit...
Read more

c++ - Clear the memory after returning a vector in a function -

-
i have function processes , stores lot of data in , returns results vector of class. amount of data stored in function tremendous , want clear storage memory of function after finished job. necessary (does function automatically clear memory) or should clear memory function? update: vector<customers> process(char* const *filename, vector<int> id) { vector<customers> list_of_customers; (perform actions) return list_of_customers; } variables defined locally within function automatically released @ end of function scope. destructors objects called, should free memory allocated objects (if objects coded correctly). example of such object std::vector . anything you've allocated new must have corresponding delete release storage. try avoid doing own allocation , use raii instead, i.e. containers or smart pointers.
Read more

erlang - Saving a digraph to mnesia is hindered because of its side-effects -

-
updated the digraph library in erlang implements data type side-effectful. each operation on data type saves new state in ets table -- instead of returning altered version of itself, more common in functional languages. the problem usage perspective, impedes effort store or pass around state in convenient way requiring me first "collect" state before can start juggle around. the closest solution have seen far serializer/deserializer , these have drawback tied current structure of digraphs instead of operating on abstract type -- prevents future proof solution. update pascal pointed out serializer utilizes interface of digraph, , hence eliminates drawback mentioned above. better, albeit still inconvenient, see no better alternative. what recommendation on how store digraphs? should go different data type altogether? thanks. i not sure understand concern. fact digraph stored in ets transparent in user interface, might want chnge either exchange digr...
Read more