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?)

score 282 · Accepted Answer · edited Jun 05 '14 at 19:18

282

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.

edited Jun 05 '14 at 19:18

DDA

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answered Jul 20 '09 at 22:31

M4N

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Nice one. `System.Web.Script.JavaScriptSerializer` is also in this assembly. – Jeremy McGee Jun 27 '11 at 09:44
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I love how the System.Web.Script.Serialization is in the System.Web.Extensions library. – argyle May 08 '12 at 23:17
it is not available in asp.net2 – Amir Jun 21 '13 at 03:56
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Make sure you are using .NET framework 4 not .NET Framework 4 client profile as the target framework, or System.Web.Extensions will not appear in the Add References dialog. – Fiach Reid Aug 30 '13 at 08:25
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It's the year 2017, we're still in VS 2005 and this answer just saved my bacon. To infinity, and beyond! – Trasiva Sep 19 '17 at 19:57
How can i use serailizer & deserializer in JScript.NET? – Mamdouh Saeed Jul 11 '19 at 21:52

score 19 · Answer 2 · edited Mar 22 '16 at 13:58

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

edited Mar 22 '16 at 13:58

mnwsmit

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answered Mar 22 '16 at 13:02

Gaurang Dhandhukiya

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score 0 · Answer 3 · answered Jan 23 '23 at 16:18

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I have been testing for .Net Framework V4.7 and have found the System.Web.Script namespace from the reference System.Web.Extensions

answered Jan 23 '23 at 16:18

J.C. Gras

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Adding System.Web.Script reference in class library

3 Answers3

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