In Microsoft BizTalk Server 2004, when you test a policy
that calls a method in a .NET class in the Business Rule Composer or in BizTalk
Orchestration Designer, you may receive an error message that is similar to the
following error message:
An exception occurred when
invoking class member
MyNamespace.MyClass.MyMethod
in assembly MyNamespace,
Version=1.0.0.0, Culture=neutral,
PublicKeyToken=060d33ae94d9c706. Object type cannot
be converted to target type
This problem occurs when the method that you are calling
contains a parameter that is an enumeration.
The following is an
example of an
Add method of a .NET class that produces this error message when the
method is called from inside the Business Rule Composer or from inside the
BizTalk Orchestration Designer.
using System;
using System.Collections;
using System.IO;
using System.Xml;
using Microsoft.RuleEngine;
namespace MyNamespace
{
/// <summary>
/// Summary description for MyClass.
/// </summary>
[Serializable]
public class MyClass
{
public enum MyEnum
{
first,
second
};
ArrayList myAL;
public MyClass()
{
myAL = new ArrayList();
}
public int Add(string myString, MyEnum myEnum)
{
myAL.Add(myString);
return 1;
}
public int Add(string myString)
{
myAL.Add(myString);
return 1;
}
}
.....
}Service pack information
To resolve this problem, obtain the latest
service pack for Microsoft BizTalk Server 2004. For more information, click the
following article number to view the article in the Microsoft Knowledge Base:
888751Â
(http://kbalertz.com/Feedback.aspx?kbNumber=888751/
)
How to obtain the latest BizTalk Server 2004 service pack
Hotfix information
Prerequisites
No prerequisites are required.
Restart requirement
You do not have to restart your computer after you apply this
hotfix.
Hotfix replacement information
This hotfix does not replace any other hotfixes.
File information
The English version of this hotfix has the file
attributes (or later file attributes) that are listed in the following table.
The dates and times for these files are listed in coordinated universal time
(UTC). When you view the file information, it is converted to local time. To
find the difference between UTC and local time, use the
Time
Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name
--------------------------------------------------------------
17-Sep-2004 16:46 3.0.5343.0 708,608 Microsoft.ruleengine.dll
Microsoft
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section. This problem was corrected in BizTalk Server 2004
Service Pack 1.
For more information about developing business rules in
BizTalk Server 2004, visit the following Microsoft Developer Network (MSDN) Web
site:
For
additional information about the standard terminology that is used to describe
Microsoft software updates, click the following article number to view the
article in the Microsoft Knowledge Base:
824684Â
(http://kbalertz.com/Feedback.aspx?kbNumber=824684/
)
Description of the standard terminology that is used to describe Microsoft software updates