ProgIdAttribute Class
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ProgIdAttribute Class

 

Allows the user to specify the ProgID of a class.

Namespace:   System.Runtime.InteropServices
Assembly:  mscorlib (in mscorlib.dll)

System.Object
  System.Attribute
    System.Runtime.InteropServices.ProgIdAttribute

[AttributeUsageAttribute(AttributeTargets.Class, Inherited = false)]
[ComVisibleAttribute(true)]
public sealed class ProgIdAttribute : Attribute

NameDescription
System_CAPS_pubmethodProgIdAttribute(String)

Initializes a new instance of the ProgIdAttribute with the specified ProgID.

NameDescription
System_CAPS_pubpropertyTypeId

When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

System_CAPS_pubpropertyValue

Gets the ProgID of the class.

NameDescription
System_CAPS_pubmethodEquals(Object)

This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodGetHashCode()

Returns the hash code for this instance.(Inherited from Attribute.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodIsDefaultAttribute()

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)

System_CAPS_pubmethodMatch(Object)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfoCount(UInt32)

Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

You can apply this attribute to classes.

ProgIDs are automatically generated for a class by combining the namespace with the type name. This can produce an invalid ProgID however, as ProgIDs are limited to 39 characters and can contain no punctuation other than a period. In such case, a ProgID can be manually assigned to the class using ProgIdAttribute.

The following example demonstrates how to apply ProgIdAttribute on a class. The application then gets all attributes of MyClass, and prints the Value property of ProgIdAttribute.

[ClassInterface(ClassInterfaceType.AutoDispatch)]
[ProgId("InteropSample.MyClass")]
public class MyClass
{
    public MyClass() {}
}

class TestApplication
{      
   public static void Main()
   {
      try
      {
         AttributeCollection attributes;
         attributes = TypeDescriptor.GetAttributes(typeof(MyClass));
         ProgIdAttribute progIdAttributeObj = (ProgIdAttribute)attributes[typeof(ProgIdAttribute)];
         Console.WriteLine("ProgIdAttribute's value is set to : " + progIdAttributeObj.Value);
      }         
      catch(Exception e)
      {
         Console.WriteLine("Exception : " + e.Message);
      }
   }
}

.NET Framework
Available since 1.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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