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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)

public static Type GetTypeFromProgID (
	string progID,
	bool throwOnError
)
public static Type GetTypeFromProgID (
	String progID, 
	boolean throwOnError
)
public static function GetTypeFromProgID (
	progID : String, 
	throwOnError : boolean
) : Type

Parameters

progID

The ProgID of the type to get.

throwOnError

true to throw any exception that occurs.

-or-

false to ignore any exception that occurs.

Return Value

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, a null reference (Nothing in Visual Basic).
Exception typeCondition

ArgumentException

progID is a null reference (Nothing in Visual Basic).

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 Program IDs are not used in Microsoft .NET Framework because they have been superseded by the concept of namespace.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 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0
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