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<assemblyBinding> Element

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Contains information about assembly version redirection and the locations of assemblies.

<configuration>
   <runtime>
      <assemblyBinding>

<assemblyBinding 
   xmlns="urn:schemas-microsoft-com:asm.v1" appliesTo="v1.0.3705">
</assemblyBinding>

Required Attribute

Attribute Description
xmlns Specifies the XML namespace required for assembly binding. Use the string "urn:schemas-microsoft-com:asm.v1" as the value.
appliesTo Specifies the runtime version the .NET Framework assembly redirection applies to. This optional attribute uses a .NET Framework version number to indicate what version it applies to. If no appliesTo attribute is specified, the <assemblyBinding> element applies to all versions of the .NET Framework. The appliesTo attribute was introduced in .NET Framework version 1.1; it is ignored by the .NET Framework version 1.0. This means that all <assemblyBinding> elements are applied when using the .NET Framework version 1.0, even if an appliesTo attribute is specified.

Child Elements

Element Description
<dependentAssembly> Encapsulates binding policy and assembly location for an assembly. Use one <dependentAssembly> tag for each assembly.
<probing> Specifies subdirectories the common language runtime searches when loading assemblies.
<publisherPolicy> Specifies whether the runtime applies publisher policy.
<qualifyAssembly> Specifies the full name of the assembly that should be dynamically loaded when a partial name is used.

Example

The following example shows how to redirect one assembly version to another and provide a codebase.

<configuration>
   <runtime>
      <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
         <dependentAssembly>
            <assemblyIdentity name="myAssembly"
                              publicKeyToken="32ab4ba45e0a69a1"
                              culture="neutral" />
            <bindingRedirect oldVersion="1.0.0.0"
                             newVersion="2.0.0.0"/>
            <codeBase version="2.0.0.0"
                      href="http://www.litwareinc.com/myAssembly.dll"/>
         </dependentAssembly>
      </assemblyBinding>
   </runtime>
</configuration>

The following example shows how to use the appliesTo attribute to redirect binding of a .NET Framework assembly.

<runtime>
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1" appliesTo="v1.0.3705">
            <dependentAssembly> 
               <assemblyIdentity name="mscorcfg" publicKeyToken="b03f5f7f11d50a3a" culture=""/>
                <bindingRedirect oldVersion="0.0.0.0-65535.65535.65535.65535" newVersion="1.0.3300.0"/>
            </dependentAssembly>
       </assemblyBinding>
</runtime>

Configuration File

This element can be used in the application configuration file, machine configuration file (Machine.config), and the publisher policy file.

See Also

Runtime Settings Schema | Configuration File Schema | Redirecting Assembly Versions