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Type.GetTypeFromProgID Method (String, Boolean)

Gets the type associated with the specified program identifier (ProgID), specifying whether to throw an exception if an error occurs while loading the type.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)
[SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags = SecurityPermissionFlag.UnmanagedCode)]
public static Type GetTypeFromProgID(
	string progID,
	bool throwOnError
)

Parameters

progID
Type: System.String

The ProgID of the type to get.

throwOnError
Type: System.Boolean

true to throw any exception that occurs.

-or-

false to ignore any exception that occurs.

Return Value

Type: System.Type
The type associated with the specified program identifier (ProgID), if progID is a valid entry in the registry and a type is associated with it; otherwise, null.
ExceptionCondition
ArgumentException

progID is null.

COMException

The specified ProgID is not registered.

This method is provided for COM support. Program IDs are not used in Microsoft .NET Framework because they have been superseded by the concept of namespace.

The following example retrieves a type by passing a ProgID, specifying whether to throw an exception if the ProgID is invalid. The example then displays the ClassID related to the ProgID, along with any applicable exception message.

using System;
class MainApp 
{
    public static void Main()
    {
        try
        {
            // Use the ProgID HKEY_CLASSES_ROOT\DirControl.DirList.1.
            string myString1 ="DIRECT.ddPalette.3"; 
            // Use a nonexistent ProgID WrongProgID.
            string myString2 ="WrongProgID"; 
            // Make a call to the method to get the type information of the given ProgID.
            Type myType1 =Type.GetTypeFromProgID(myString1,true);
            Console.WriteLine("GUID for ProgID DirControl.DirList.1 is {0}.", myType1.GUID);
            // Throw an exception because the ProgID is invalid and the throwOnError   
            // parameter is set to True.
            Type myType2 =Type.GetTypeFromProgID(myString2,true);
        }
        catch(Exception e)
        {
            Console.WriteLine("An exception occurred.");
            Console.WriteLine("Source: {0}", e.Source);
            Console.WriteLine("Message: {0}", e.Message);
        }
    }
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0
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