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Type.GetTypeFromProgID Method (String, String, Boolean)

Gets the type associated with the specified program identifier (progID) from the specified server, 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,
	string server,
	bool throwOnError
)
public static Type GetTypeFromProgID (
	String progID, 
	String server, 
	boolean throwOnError
)
public static function GetTypeFromProgID (
	progID : String, 
	server : String, 
	throwOnError : boolean
) : Type
Not applicable.

Parameters

progID

The progID of the Type to get.

server

The server from which to load the type. If the server name is a null reference (Nothing in Visual Basic), this method automatically reverts to the local machine.

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 Program IDs are not used in Microsoft .NET Framework because they have been superseded by the concept of namespace.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 and server name. The example then displays the ClassID related to the ProgID, specifying whether to throw an exception if the ProgID or the server name is invalid.


using System;
class MainApp 
{
    public static void Main()
    {
        try
        {
            // Use server localhost.
            string theServer="localhost";
            // Use  ProgID HKEY_CLASSES_ROOT\DirControl.DirList.1.
            string myString1 ="DirControl.DirList.1"; 
            // Use a wrong ProgID WrongProgID.
            string myString2 ="WrongProgID"; 
            // Make a call to the method to get the type information for the given ProgID.
            Type myType1 =Type.GetTypeFromProgID(myString1,theServer,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, theServer, true);
        }
        catch(Exception e)
        {
            Console.WriteLine("An exception occurred. The ProgID is wrong.");
            Console.WriteLine("Source: {0}" , e.Source);
            Console.WriteLine("Message: {0}" , e.Message);
        }
    }
}

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0
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