Question

Making PropertyGrid ReadOnly

Asked by: muralimohanb

Hi,

I have a UserControl which is set as the SelectedObject of a PropertyGrid in windows forms.
In the add form user can edit the properties of the UserControl. I have a form in which the property grid of that UserControl is displayed. In runtime, I want to make the property grin readonly, but I could not make my propertyGid readonly, since my UserControl has both Read/Write properties. If I use .enabled=false, entire PropertyGrid becomes disabled so that user could not use scroll bars. I need to make the PropertyGrid ReadOnly in Form. How could this be done ?

Please help.

Murali

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Asked On
2004-06-02 at 22:15:02ID21011498
Tags

propertygrid

,

readonly

,

property

Topic

C# Programming Language

Participating Experts
2
Points
0
Comments
5

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Answers

 

by: rama_krishna580Posted on 2004-06-02 at 23:22:08ID: 11219475

Hi,

Look at this example , it exactly what you are looking for...

http://www.thecodeproject.com/csharp/DzDynamicProperties.asp

best of luck..

R.K

 

by: muralimohanbPosted on 2004-06-03 at 00:18:12ID: 11219779

Hi

I have seen already that example. In that example he is using "InstanceDescriptor" and creating altogether a new instance of that control. I cant do that. Is there any other work around?

Regards
Murali

 

by: muralimohanbPosted on 2004-06-23 at 23:53:48ID: 11386087

Hi,

I have solved this by myself. There is noway that the property grid can be made readonly at runtime.

To resolve this, I did a work around.

When the property grid is loaded, then all proeprties with its values will be added to a Hashtable. This hashtable acts as a master. If any of the child properties are there for any property, then the "child property name.parent property name" as akey will be added to that hashtable without any value to it.

On the event of PropertyValueChanged, iterate through the Hashtable, get the value of the property from the hashtable ( with the property name as key ) and assign it back to the changed property. This way, even if the user changes the property it will be set back to its original value.

For child properties, while iterating though the hashtbale, check if the key starts with "child property name.". If so substring the key to get its parent property name and set the original value to that parent property.

I knew this is a round about way, but I could find only this as an appropriate solution.

Regards
Murali

 

by: moduloPosted on 2004-08-16 at 12:53:12ID: 11814059

PAQed, with points refunded (500)

modulo
Community Support Moderator

20120131-EE-VQP-002

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