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PODo you have to strongly name assemblies to run multiple versions of the same assembly in WF?
 

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  1. PODo you have to strongly name assemblies to run multiple versions of the same assembly in WF?
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    <p>I'm having to maintain a system running windows workflow foundation, changes need to be made to the Workflows so I'm developing them in a new version of the workflow project, say Version 2.0.0.0</p> <p>I need to run Version 1.0.0.0 workflows, at the same time as Version 2.0.0.0 workflows, with new workflows being created using the latest assembly.</p> <p>I've read <a href="http://msmvps.com/blogs/theproblemsolver/archive/2008/09/10/versioning-long-running-workfows.aspx" rel="nofollow">this great explanation</a> on running multiple versions of workflows, and within my app.config I have the following:</p> <pre><code>&lt;runtime&gt; &lt;assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"&gt; &lt;dependentAssembly&gt; &lt;assemblyIdentity name="some.namespace.workflow" publicKeyToken="null" /&gt; &lt;codeBase version="1.0.0.0" href="legacy/version_1_0_0_0/some.namespace.workflow.dll"/&gt; &lt;/dependentAssembly&gt; &lt;/assemblyBinding&gt; &lt;/runtime&gt; </code></pre> <p>However, the new workflows always get created with version 1.0.0.0 - even though I've changed the version of the related Workflow project to 2.0.0.0</p> <p>The only difference I can see is that my assemblies aren't strongly named, could this be what's causing it?</p> <p>Thank you.</p> <p>UPDATE:</p> <p>I think this problem might be related to the way I'm loading the assembly by using:</p> <pre><code>Assembly asm = Assembly.Load("some.namespace.workflow"); </code></pre> <p><a href="http://blogs.msdn.com/b/rjacobs/archive/2011/01/12/assembly-load-version-numbers-and-unsigned-assemblies.aspx" rel="nofollow">This chap</a> is suggesting that you need to strong name your assemblies to use the <code>Assembly.Load</code> method - is this true?</p>
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