Winforms propertygrid dictionary

Tag: cwinformspropertygridtypeconverter.

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I'm trying to display the properties of my Wall class in a properties grid. Right now my wall class looks like this:. Right now all it does is display the capacity and count. What I want is for it to display the names property of each member in the list. I thought that putting an ExpandableObjectConverter over the list would solve the problem but it didnt. So I tried putting a custom TypeConverter on top of the Member class.

The custom type converter is having some effect because when I click the button to manually show the collection everything is listed properly.

winforms propertygrid dictionary

But what I want is for the names to be what is shown instead of the capacity and count. This is rather unusual as Plutonix commented, but here is a way to do it. Just use the following TypeConverter on the Members property. Since the PropertyGrid is based on properties, you have to create fake properties that represent each member. That's what represents the MemberDescriptor class here. Both are free. You can do a complete customization from wix but it In such scenario I usually go with generating new entity Ids on the client.

NewId ; product. Count ; filePaths. Count ] which is Change this: [MarshalAs UnmanagedType. Other important thingYou'll need to derive from the CollectionEditor class and handle the appropriate methods. I believe I haven't tried it myself that you can override the CreateNewItemTypes method to return an array of the types that can be created. Note that the above method is called by the protected property NewItemTypes. The returned types must be concrete types that can be created. How you determine this list is up to you.

You can use reflection to get the generic template and if not abstract return that type. Alternatively you could use reflection to enumerate all types in all assemblies loaded by your process and get any types that derive from your abstract class.

You can also return a fixed list if possible. Finally you can provide some sort of factory class that will give you the list of valid types similar to the new data provider factory in v2.

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The CollectionItemType property calls the virtual method CreateCollectionItemType should return the base type stored in the collection. In your case it would be Motor as this is the abstract class. The CollectionEditor only supports ICollection types. Although it theoretically works with dictionaries it doesn't really do well as you saw. You have several options. You can create a derived class from CollectionEditor and override the various protected methods to proper get and set items in the collection.

This sounds like the easiest but I have a feeling it'll be a lot of work. Alternatively you can simply create your own editor deriving from UITypeEditor.

Attempting to use the CollectionEditor directly will require that you somehow manage duplicate objects. With a custom form you can manage this yourself by displaying the keys in a listbox or view on the left and the value properties on the right. You can detect duplicate objects when the user attempts to add a new item. I believe either method will work. You could try overriding CollectionEditor first and see if it exposes enough members for it to work but I don't believe it does.

For example you can override a method to create a new object instance but you don't have any control that I can see over when it is added to the parent collection. Ask a question. Quick access. Search related threads. Remove From My Forums. Answered by:. Archived Forums. Visual C. Sign in to vote. How do I get my property grid to properly display the objects contained within the Dictionary? I can get the CollectionEditor to display when I click the "The following code example illustrates creating a property grid and setting its location on a form.

This example requires that you have a form with a TextBox on it. To use the property grid, you create a new instance of the PropertyGrid class on a parent control and set SelectedObject to the object to display the properties for.

The information displayed in the grid is a snapshot of the properties at the time the object is assigned. If a property value of the object specified by the SelectedObject is changed in code at run time, the new value is not displayed until an action is taken in the grid that causes the grid to refresh. The property tabs within the property grid appear as buttons on the toolbar at the top of the PropertyGridand can vary in scope as defined in the PropertyTabScope.

You can use the LargeButtons property to display large buttons instead of the default smaller ones. Large buttons are by pixels rather than the standard by pixels. The large and small buttons and the property list expander icons the plus or minus icons are resized according to the system DPI setting when the app. The PropertyGrid control is not initially presented in the toolbox in the development environment. You can add a property grid to the toolbox, which enables you to drag a PropertyGrid onto your form.

You can also define an instance of PropertyGrid by adding the appropriate code in your source code. All public properties of the SelectedObject will be displayed in the PropertyGrid by default. You can hide a property so that it is not displayed in the PropertyGrid control by decorating it with the BrowsableAttribute and setting the value to false.

You can specify the category that a property appears in by providing a category with the CategoryAttribute. You can provide descriptive text for your property that appears at the bottom of the PropertyGrid control by using the DescriptionAttribute.

Initializes a new instance of the PropertyGrid class. Determines the value of the AutoScroll property.

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Determines whether the value of the HScroll property is set to true. Determines whether the user had scrolled through the ScrollableControl control. Determines whether the value of the VScroll property is set to true. Gets the AccessibleObject assigned to the control. Gets or sets the default action description of the control for use by accessibility client applications. Gets or sets the edges of the container to which a control is bound and determines how a control is resized with its parent.

Gets or sets a value that indicates whether controls in this container will be automatically validated when the focus changes. Gets or sets the background image layout as defined in the ImageLayout enumeration. Gets or sets the BindingContext for the control.

Gets the distance, in pixels, between the bottom edge of the control and the top edge of its container's client area.When developing business applications, you often encounter a small but annoying problem: it is necessary to create the business object's constructor so that the administrator of the application can add new properties to business objects or modify old ones directly in the user interface without coding. As an example, consider the application managing information about employees of an organization.

What comes to mind first when you need to implement this functionality is to not use typed business objects, but dynamically configured objects. That is, the class, instead of clearly defined properties such as FirstNameLastNameetc.

To refer to a property of the business object, you will need to access this collection, look for the right property by name, and write back the new values. It seems to be a good solution, even though you must ensure the persistence of such an object, which means that you possibly would not be able to use direct ORM-tools such as Entity Framework or nHibernate.

The second task is to create a user interface to view and edit this object editor. If the structure of the object, its contract and public properties are known in advance as it often is in case of ordinary classesthat is not a big problem actually, because you can easily make any form for manual editing. The next solution coming to mind is to use dynamically generated UI.

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Basically, this control is a convenient tool, it is configurable, and it is suitable for administration tasks very well. However, as the control uses reflection, it cannot find our dynamically defined properties in configurable object, because the structure of the object is different.

It is clear that we can replace the data extracted from the object by the reflection with our own data. For this purpose, we can use class PropertyDescriptor or rather its inheritorwhich is an abstraction of a property class, and is commonly used in designers within the Visual Studio.

Customized Display of Collection Data in a PropertyGrid

Not a bad idea, but it will cause a small inconvenience: you would not be able to work with business object as with ordinary strongly typed object and to refer its properties directly in the usual way, but you will have to find somehow the desired properties by their names and refer to them indirectly. This code source 3 looks unusual and rather awkward. As we see, the solution above would work properly, but it has a number of disadvantages.

Therefore, I would suggest using an even more interesting and convenient solution. In NET 4. One can get more information about dynamic types from MSDN, so I would not talk much about theory in this article. What I want to say is that the class DynamicObject allows the developer determine the operations, that can be performed on the dynamic properties and set how to perform these operations.

For example, you can determine what should happen when you try to get or set an object property, call the method or to perform standard mathematical operations like addition and multiplication. This class can be useful if you want to create a user-friendly application interface for our business object, as it allows you to access properties that have not been defined previously.

You cannot create an instance of DynamicObject directly. This gives us a great advantage, since we can refer to an instance of the dynamic type in an arbitrary manner and thus simulate the missing property.

For example, in our class BusinessObject there is no property FirstNamehowever, we can refer it, and with proper implementation of this dynamic type, this property will be added automatically. To ensure proper work of PropertyGridwe must implement the inheritor of DynamicObject so that it could provide the control with description of its properties: names, data types, attributes that are specific to PropertyGrid such as Categoryor Description.

The example of such implementation, given below, does not support attributes for simplicity's sake. As you can see from source 5, our class implements the interface ICustomTypeDescriptor for the proper work of PropertyGrid. ICustomTypeDescriptor interface allows an object to provide information about its inner structure, i.

winforms propertygrid dictionary

For example, ICustomTypeDescriptor is used in. NET to provide information about the types of COM objects, which do not support properties or attributes. To provide access to dynamic data about the type, dynamic class can implement ICustomTypeDescriptor or inherit CustomTypeDescriptor class, which provides a simple implementation of this interface. In addition, our class contains a nested private class DynamicPropertyDescriptorwhich describes the dynamic properties.RadPropertyGrid for WinForms displays the properties of a given object in a user-friendly way allowing the end-user to edit these properties using our editors.

Now you can concentrate all the settings in one place instead of scattering them all over your forms. RadPropertyGrid gives the end-user the ability to filter, group and sort its items thanks to our data processing engine used also by controls like RadGridView, RadListView etc. RadPropertyGrid takes full advantage of the virtualization mechanism, so even if you load an object with hundreds of properties, no problem, RadPropertyGrid will handle these cases.

To try it out sign up for a free day trial. RadPropertyGrid comes with a built-in tool bar which filters properties as you type.

winforms propertygrid dictionary

You can customize its behavior by defining the part of the property by which the filter is applied. For example, you can filter by property name, property label, property category or property description. You can also change the operator by which the filter is applied - Starts, Contains, etc.

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RadPropertyGrid also includes a help bar at the bottom where the name of the selected property is displayed along with the description from the DescriptionAttribute of the property. Both bars can be easily shown or hidden by setting a single property for each bar. For those of you who would like to additionally customize RadPropertyGridthe good news is that this control can be easily extended by adding elements to it, such as your custom toolbars or another type of Telerik Presentation Framework element.

You can add elements to the RadPropertyGrid or the tool bar itself. As to the editing capabilities, RadPropertyGrid allows you to control the process of editing all the way through - from the initialization and the type of editor used to validation and value changing events. All Rights Reserved.

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See Trademarks for appropriate markings. Telerik UI for WinForms. API Reference. Download Free Trial. In this article. Not finding the help you need?The PropertyGrid control provides an extremely flexible and extensible way to manipulate objects in an application's user interface.

Providing the same powerful exposure to an object's methods would be extremely useful. Any number of object-specific commands could then be easily made available to the end user without involving special, hard-coded menus and buttons. The PropertyGrid control itself has many properties dealing with a "hot commands region" or "commands pane". But as with many of the PropertyGrid 's extensibility mechanisms, this one has little or no documentation, making it virtually undiscoverable.

But once the mechanism is revealed and conveniently packaged for reuse, it can be simply applied to expose object methods as commands. My goal in this article is to provide a short tutorial on the DesignerVerb mechanism required to implement this solution and to provide a reusable class to simplify future implementations. The PropertyGrid control is most at home in a visual design-time environment such as the Visual Studio Forms Designer.

Forms act as containers where controls are represented by sites that blend the needs of the container and its components, providing the user with editing functionality not generally of interest at runtime. Many of the complex details of that Component Model are addressed in a rather interesting but long CodeProject article: Leveraging. But most of our application user interfaces are not derived from the.

Fortunately we only need to implement a few methods on a couple of interfaces to do the job. We'll construct a lightweight DesignerVerbSite class which will emulate the sites of the Component Model and interface with the PropertyGrid. It will act as a site by implementing the ISite interface and reveal tagged methods on our prototype object as DesignerVerb s through the IMenuCommandService interface.

Our prototype object will emulate a component by supporting the IComponent interface and give its DesignerVerbSite to the PropertyGrid. Note that our prototype object could act as its own site with its own implementations of ISite and IMenuCommandService. But factoring out the site functionality as a separate class provides reusability.

winforms propertygrid dictionary

Most of the members of the required interfaces are never called in the context of this tutorial. So those methods just throw the NotImplementedException. Our prototype object class, here called Dummyimplements the IComponent interface, which requires us to also implement IDisposable.

The single interface member of interest for the prototype object is the Site property. We need only return an instance of our DesignerVerbSite which connects back to our prototype object. Note the BrowsableAttribute is set to false here so that this property, which is not of interest to our users, will not appear in the PropertyGrid.

The DesignerVerbSite needs some way to identify which of our methods should be exposed.Join Stack Overflow to learn, share knowledge, and build your career. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I'd like to edit a list of key value string, string items using a propertygrid.

I can't add any items. Is the Dictionary object supported, or is there any other object with which I could solve this problem? I have done it following this code in the past:. Learn more. Using a Dictionary in a propertygrid Ask Question. Asked 11 years, 1 month ago. Active 5 years, 2 months ago. Viewed 14k times.

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Improve this question. Robert Massa Robert Massa 3, 1 1 gold badge 26 26 silver badges 41 41 bronze badges. Add a comment. Active Oldest Votes. ForestGreen; propertyGrid1. Improve this answer. Iain Iain 2, 1 1 gold badge 20 20 silver badges 24 24 bronze badges.

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