Type.GetTypeFromProgID Method (String, String, Boolean)


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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


Type: System.String

The progID of the Type to get.

Type: System.String

The server from which to load the type. If the server name is null, this method automatically reverts to the local machine.

Type: System.Boolean

true to throw any exception that occurs.


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.

Exception Condition

progID is null.


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 Program IDs are not used in Microsoft .NET Framework because they have been superseded by the concept of namespace.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()
            // 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);


Requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

.NET Framework
Available since 1.1
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