How can I use any available version of an assembly on an ASP .NET page?
For example, I use this tag before adding a Crystal Reports control on a web page on my computer:
<%@ Register Assembly="CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"
Namespace="CrystalDecisions.Web" TagPrefix="CR" %>
However, if I install this web page on a computer that has a different version of Crystal Reports, I would have to change the version part of the assembly attribute:
&开发者_如何学编程lt;%@ Register Assembly="CrystalDecisions.Web, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"
Namespace="CrystalDecisions.Web" TagPrefix="CR" %>
Is there any way I can avoid this by instructing ASP .NET to use the newest available version or specify the minimum required version?
Just drop the Version=
portion:
<%@ Register Assembly="CrystalDecisions.Web, , Culture=neutral,
PublicKeyToken=692fbea5521e1304"
Namespace="CrystalDecisions.Web"
TagPrefix="CR" %>
However this only works with late binding
. If you actually compile any of your assemblies against a specific version of the assembly you will need an assembly binding redirect in your Web.config file.
<configuration>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="CrystalDecisions.Web"
publicKeyToken="692fbea5521e1304"
/>
<bindingRedirect oldVersion="10.5.3700.0"
newVersion="13.0.2000.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
</configuration>
You need to use the assemblyBinding section in your web.config file. See this article.
You could just do this:
<%@ Register Assembly="CrystalDecisions.Web, Culture=neutral,
PublicKeyToken=692fbea5521e1304"
Namespace="CrystalDecisions.Web" TagPrefix="CR" %>
This will allow you load any version.
You need to make sure you download the correct CR version. Since you are using VS 2010, you need to refer to CRforVS_redist_install_64bit_13_0_1.zip (for 64 bit machine) or CRforVS_redist_install_32bit_13_0_1.zip (for 32 bit machine). These two are the redistributable packages. You can download full package as well: CRforVS_13_0_1.exe
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