Represents a collection of PropertyDescriptor objects.
<HostProtectionAttribute(SecurityAction.LinkDemand, Synchronization := True)> _ Public Class PropertyDescriptorCollection _ Implements IList, IDictionary, ICollection, IEnumerable
Dim instance As PropertyDescriptorCollection
[HostProtectionAttribute(SecurityAction.LinkDemand, Synchronization = true)] public class PropertyDescriptorCollection : IList, IDictionary, ICollection, IEnumerable
[HostProtectionAttribute(SecurityAction::LinkDemand, Synchronization = true)] public ref class PropertyDescriptorCollection : IList, IDictionary, ICollection, IEnumerable
public class PropertyDescriptorCollection implements IList, IDictionary, ICollection, IEnumerable
The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: Synchronization. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.
PropertyDescriptorCollection is read-only; it does not implement methods that add or remove properties. You must inherit from this class to implement these methods.
Using the properties available in the PropertyDescriptorCollection class, you can query the collection about its contents. Use the Count property to determine the number of elements in the collection. Use the Item property to get a specific property by index number or by name.
In addition to properties, you can use the Find method to get a description of the property with the specified name from the collection.
The following code example creates a new PropertyDescriptorCollection using the properties on button1. It requires that button1 has been instantiated on a form.
Dim properties As PropertyDescriptorCollection = TypeDescriptor.GetProperties(button1)
PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(button1);
PropertyDescriptorCollection^ properties = TypeDescriptor::GetProperties( button1 );
The next example prints all the properties on a button in a text box. It requires that button1 and textBox1 have been instantiated on a form.
Private Sub MyPropertyCollection() ' Creates a new collection and assign it the properties for button1. Dim properties As PropertyDescriptorCollection = TypeDescriptor.GetProperties(button1) ' Displays each property in the collection in a text box. Dim myProperty As PropertyDescriptor For Each myProperty In properties textBox1.Text &= myProperty.Name & ControlChars.Cr Next myProperty End Sub 'MyPropertyCollection
private void MyPropertyCollection() { // Creates a new collection and assign it the properties for button1. PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(button1); // Displays each property in the collection in a text box. foreach (PropertyDescriptor myProperty in properties) textBox1.Text += myProperty.Name + '\n'; }
private: void MyPropertyCollection() { // Creates a new collection and assign it the properties for button1. PropertyDescriptorCollection^ properties = TypeDescriptor::GetProperties( button1 ); // Displays each property in the collection in a text box. for each ( PropertyDescriptor^ myProperty in properties ) { textBox1->Text = String::Concat( textBox1->Text, myProperty->Name, "\n" ); } }
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