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.

Question

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i Want to run database script in C# code but when i run the project it through exception

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.

Please help....

Posted 14-Jul-14 20:02pm

Yogesh Kumar Tyagi

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2 solutions

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Bernhard Hiller · Accepted Answer · 2014-07-14T20:11:00

Solution 1

In the configuration section of your app.config / web.config, add

XML

<startup useLegacyV2RuntimeActivationPolicy="true">
  <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
</startup>

The useLegacyV2RuntimeActivationPolicy is the main point here.

Posted 14-Jul-14 20:11pm

Bernhard Hiller

Comments

Yogesh Kumar Tyagi 15-Jul-14 2:14am

thanks sir it will work successfully

Yogesh Kumar Tyagi · Accepted Answer · 2014-07-14T20:12:00

Solution 2

I solve it by adding appconfig file with following setting

XML

<?xml version="1.0"?>
<configuration>

  <startup useLegacyV2RuntimeActivationPolicy="true">
    <supportedRuntime version="v4.0"/>
    <requiredRuntime version="v4.0.20506"/>
  </startup>
</configuration>

Posted 14-Jul-14 20:12pm

Yogesh Kumar Tyagi

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.

2 solutions

Solution 1

Solution 2

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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.

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0

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