.net Sdk - Compatibility With .net Framework 4.0 Follow

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I'm trying to use the BarTender 9.4 print engine with an application that uses version 4.0 of the .NET Framework.

When I attempt to start the print engine, I get an exception.

Here's the code:
[code].
.
.
// Create and start a new BarTender Print Engine.
try
{
_engine = new Engine(true);
}
catch (Exception exception)
{
MessageBox.Show(this, exception.Message, AppName);
Close(); // Close this app. We cannot run without connection to an engine.
return;
}
.
.
.[/code]

Here's the exception:
[code]Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information.[/code]

Can someone please tell me where I can get the .Net 4.0 compatible COM wrapper library for the BarTender 9.4 ActiveX automation library?

Best regards,

CG

31 comments

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Shotaro Ito
Moderator

Hi CodeGuru,

Modifying the app.config should work to overcome the mixed mode exception.
To be sure it works you could try creating a file by the name of:
<appname>.exe.config
where <appname> is the name of the file. In this file place the contents as:
[xml]
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0"/>
</startup>
[/xml]
For more information about the useLegacyV2RuntimeActivationPolicy flag see:
[url="http://msdn.microsoft.com/en-us/library/bbx34a2h.aspx"]http://msdn.microsoft.com/en-us/library/bbx34a2h.aspx[/url]
www.marklio.com/marklio/PermaLink,guid,ecc34c3c-be44-4422-86b7-900900e451f9.aspx

hope that helps!
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[quote name='Shotaro I -Seagull Support' timestamp='1315895422' post='590']
Hi CodeGuru,

Modifying the app.config should work to overcome the mixed mode exception.
To be sure it works you could try creating a file by the name of:
<appname>.exe.config
where <appname> is the name of the file. In this file place the contents as:
[xml]
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0"/>
</startup>
[/xml]
For more information about the useLegacyV2RuntimeActivationPolicy flag see:
[url="http://msdn.microsoft.com/en-us/library/bbx34a2h.aspx"]http://msdn.microsoft.com/en-us/library/bbx34a2h.aspx[/url]
www.marklio.com/marklio/PermaLink,guid,ecc34c3c-be44-4422-86b7-900900e451f9.aspx

hope that helps!
[/quote]

How can you guys not fix this? There should be no need for us to have to add this in the configuration file, this is just one more thing for a developer to worry about not to mention the side effect that this can bring about in other parts of your code that will be incredible difficult to debug.

Are there any plans to get rid of the need for this hack?

Thanks.
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Is someone from Segull going to answer my question?

I ask once again, are you guys planning to fix this or is the hack the only solution Segull is willing to provide?

Thanks.
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Seagull???
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Shotaro Ito
Moderator

Dear Mike,
I'm sorry that I've replied late, and thank you for your suggestion to improve compatibility with the latest .net Framework.
I've asked to our development division.
At some point, we will upgrade BarTender to use 4.0, and this issue will go away. But we still support .NET framework versions less than 4.0. Right now, we have a product that works with 2.0, 3.0, 3.5, and 4.0 - but 4.0 requires additional configuration to use it.
Obviously it would be better for us to find a way to do it automatically, and we'll look at that for future version.
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Just loaded the v 10 release. Still has this .Net 4 compatibility issue.
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I am using the .Net SDK from a .dll. I added a app.config file to the .dll and added the workaround code. I am still getting the problem. Then I added the workaround to the app.config file of the calling program (the program calling the .dll) and I am still getting this error. Please don't tell me that I can't use the .Net Sdk from within a .net 4 dll.
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Hi,
Could not load file or assembly 'Seagull.Interop, Version=9.30.0.0, Culture=neutral, PublicKeyToken=109ff779a1b4cbc7' or one of its dependencies. The system cannot find the file specified.I am also getting this error .How can I resolve this issue ...........Please any one replay to me
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[quote name='BumpaRoy' timestamp='1340223079' post='2647']
I am using the .Net SDK from a .dll. I added a app.config file to the .dll and added the workaround code. I am still getting the problem. Then I added the workaround to the app.config file of the calling program (the program calling the .dll) and I am still getting this error. Please don't tell me that I can't use the .Net Sdk from within a .net 4 dll.
[/quote]

Any one from Seagull listening??
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Shotaro Ito
Moderator

At this moment, BarTender(10.0SR1 at this point) not support .net 4.0, so you still requires useLegacyV2RuntimeActivationPolicy setting.
About DLL, I don't have enough knowledge to answer that, so I'm checking with Development division.
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Shotaro Ito
Moderator

[quote name='Siva77' timestamp='1340669736' post='2667']
Hi,
Could not load file or assembly 'Seagull.Interop, Version=9.30.0.0, Culture=neutral, PublicKeyToken=109ff779a1b4cbc7' or one of its dependencies. The system cannot find the file specified.I am also getting this error .How can I resolve this issue ...........Please any one replay to me
[/quote]
If not too late..
Make sure you have installed and Activated The version(9.3) of BarTender(with Printer Maestro, BarTender system service).
Check if .net Print SDK sample works properly on the same PC.
This post might helps..
[url="http://seagullscientific.invisionzone.com/index.php?/topic/81-cannot-load-seagullbartenderprintdll/page__view__findpost__p__150"]My link[/url]
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[quote name='Shotaro I -Seagull Support' timestamp='1340770724' post='2684']
At this moment, BarTender(10.0SR1 at this point) not support .net 4.0, so you still requires useLegacyV2RuntimeActivationPolicy setting.
About DLL, I don't have enough knowledge to answer that, so I'm checking with Development division.
[/quote]

Please respond to me as soon as possible. This is a critical app and needs to be delivered soon. If I need to find a workaround, I have to get on it ASAP.
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[quote name='Shotaro I -Seagull Support' timestamp='1340770724' post='2684']
At this moment, BarTender(10.0SR1 at this point) not support .net 4.0, so you still requires useLegacyV2RuntimeActivationPolicy setting.
About DLL, I don't have enough knowledge to answer that, so I'm checking with Development division.
[/quote]

I really need an answer on this .....
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Shotaro Ito
Moderator

Try

Build a DLL which references Seagull.BarTender.Print, with build setting of .net 3.5 Profile. No "web.config" in the project.

Create a caller application with .net 4.0 Profile. modify web.config to add <startup useLegacyV2RuntimeActivationPolicy="true">...

Note that .net Print SDK is 32bit(x86) project, so if you run the project on x64, set build target to x86 (not Any CPU).

Hope that helps.
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[quote name='Shotaro I -Seagull Support' timestamp='1340948860' post='2717']
Try

Build a DLL which references Seagull.BarTender.Print, with build setting of .net 3.5 Profile. No "web.config" in the project.

Create a caller application with .net 4.0 Profile. modify web.config to add <startup useLegacyV2RuntimeActivationPolicy="true">...

Note that .net Print SDK is 32bit(x86) project, so if you run the project on x64, set build target to x86 (not Any CPU).

Hope that helps.
[/quote]

When will this be fixed? It's not like .Net 4.0 was just released.
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Shotaro Ito
Moderator

[quote name='BumpaRoy' timestamp='1340987198' post='2732']
When will this be fixed? It's not like .Net 4.0 was just released.
[/quote]
Did the workaround above work?

Needless to say one day it need to be changed, however I cannot tell when that is going to be happen at the moment.

The concern is, once .net SDK is moved to .net 4.0, it would lose compatibility with .net 2.0 - 3.5 project, that also lose compatibility with Visual studio 2005 - 2008, which still widely being used.

I understand the importance of this issue and push it once again in feature request.
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[quote name='Shotaro I -Seagull Support' timestamp='1341189225' post='2736']
Did the workaround above work?

Needless to say one day it need to be changed, however I cannot tell when that is going to be happen at the moment.

The concern is, once .net SDK is moved to .net 4.0, it would lose compatibility with .net 2.0 - 3.5 project, that also lose compatibility with Visual studio 2005 - 2008, which still widely being used.

I understand the importance of this issue and push it once again in feature request.
[/quote]

First, I appreciate the response, even though it is not what I want to hear. All new development is being done on .Net 4.0 plus. So you are really hindering new development. Because the nature of the beast in component development, and the importance of legacy apps, you need to support both 2.0 and 4.0. All of the other component developers do this. If you don't embrace the new, your base will never grow and probably will shrink as other solutions provide what your not.

I will be testing the work around today.
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Work around did not work. I have to call Bartender from a .dll (which is .Net 4.0). No .dlls don't read the app.config files, so this is of no use.

MAJOR issue. There should be no excuse to not having a .Net 4.0 SDK. Sorry, but I have wasted alot of time.
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Take that back. I did get the work around fixed. Sorry for the last post .. however this has been much more difficult than it needed to be.
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Shotaro Ito
Moderator

Hi Bumparoy, thanks for the update - good to hear the workaround worked. Seeing some users having trouble with it, I hope we can fix that sooner to make simple implementation with projects using newer framework.
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Ian Cummings
Moderator

To Bumparoy and others; we will be supporting the .NET Framework v4.0, but it will be some time until this is implemented due to other priorities and compatibility issues. Please bear with us and use the acknowledged, less than perfect, workaround meanwhile.
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.Net 4.5 is out now.... I certainly hope that Seagull will support 4.5 natively so that we don’t have to apply some hack to make it work like we do today. I realize is more work for Seagull to maintain more versions but its the right thing to do for your customers.

Thanks.
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Ian Cummings
Moderator

Acknowledged, but the answer is still the same.
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This topic was started in September of 2011. It is now November 2012. Has Seagull made any inroads here to support .Net 4 and up?? The workaround code is a pain haveing to write a .Net 2.0 dll and such (read thread). It makes maintenace much harder.

Again, have you made any effort?? If not, the Bartender SDK may not be the way to go long term if you are not committed to the SDK.
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Ian Cummings
Moderator

Yes we are committed to the SDK, in fact it is updated with more or less every release. The problem is that when we switch up to using .NET 4, which we will do, we will be dropping support for users of older versions of Visual Studio that do not support it. Many of our resellers, integrators and end users would be affected, so this is being delayed until the time is right. Sorry, but due to issues of resources we will not be supporting two versions of the SDK at the same time.
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Sorry, don't see the commitment. By the time you have a .Net 4 out, .Net 6 or 66 will be mainstream. We can't base our companies needs on your lack of support for your own product. If you can support new functionality in a reasonable timeframe (.Net 4 has been out for awhile now), don't string your customers out.
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Ian, any progress to report on this issue?  This thread was started 19 months ago and the reply then was the same as the last reply .. "We're committed, but ...."

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Ian Cummings
Moderator

The response is still the same I'm afraid.  This will happen when we judge the time is right for the majority of our customers.  I don't know when this will happen exactly, but it is nearer than when you last asked for it.

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So does the 10.1 release now support a .Net release higher than 2.0?

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Ian Cummings
Moderator

I've contacted our development department on this and they give me a rough estimate of probably about one year from now, making it sometime in that latter half of 2014.
 
However, it should be noted that BarTender works out of the box with .NET 3.5 and Visual Studio 2008 is only 4 years old. We aren't ready to drop it yet. We will next year.  We also support .NET 4.0 and 4.5. The configuration setting required to make it work is not a "hack" or voodoo magic. It is a Microsoft-supported method of enabling the usage of mixed-mode assemblies compiled with a target of 3.5 or below.
 
BumpaRoy, if you have particular problems with your projects using this method for supporting mixed-mode assemblies compiled with a target of 3.5 or below, then I suggest you get in touch with technical support directly in order to go through the issues in detail.  Contact the office that is appropriate for your region:
 

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