Adding System Web Script reference in class library

Question

I am currently moving code from my app code folder to a class library   I have tagged several methods with  System Web Script Serialization ScriptIgnore  attributes   My class library cannot see this namespace   My add references dialog cannot see this namespace   How do I properly use this tag from a class library   Here is the error  The type or namespace name  ScriptIgnoreAttribute  could not be found  are you missing a using directive or an assembly reference

User · Accepted Answer

The ScriptIgnoreAttribute class is in the System Web Extensions dll assembly  Located under Assemblies   Framework in the VS Reference Manager   You have to add a reference to that assembly in your class library project   You can find this information at top of the MSDN page for the ScriptIgnoreAttribute class

User · Answer

You need to add a reference to System Web Extensions dll in project for System Web Script Serialization error

[asp.net] Adding System.Web.Script reference in class library

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