Refferences Issue when converting from .net framework 4.0 to 3.5

Question

User-1263702099 posted

Hai,

  Am working based on 3 tier application.having 4 class libraries and one web application contains aspx and aspx.cs,web.config.... files.Now target framework for all are in .net 4.0 only.Due to some other requirement i want to make it as .NET3.5 framework.Am trying to change the target framework as 3.5 .after make it as 3.5  refferences error are occured

(like type or name space missing). Even am change the framework for class libraries to 3.5.How to resolve this solution

Answer 1

User-359936451 posted

If you are familiar with adding reference you will need to add those that are missing. If they are even available for .Net 3.5.

You can also check to see the exact names of any that are missing.

In VS, click on Project then Properties, select References and look to see if any are marked as missing, you will need to remove them, or add them, by next clicking the add button.

when the Reference Manager box opens, locate the correct references to add.

If you can provide more details about your errors we might be able to provide more guidance.

Answer 2

User61956409 posted

Hi NatarajYashash,

Some new namespaces and features are added in .NET Framework 4.0, if you are using these new features or namespaces in .NET Framework 4.0 application then downgrade to .NET Framework 3.5, these new features or namespaces are not supported in .NET Framework 3.5, which will cause the error. If you are using Visual Studio, you could check the error from Error List and modify the corresponding code based on error message.

Best Regards,

Fei Han

Answer 3

User-359936451 posted

Can you post a list of the missing references? Which ones are throwing errors. Maybe we can help you further to locate how to get them added or updated.