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Namespace for [DataContract]


For the [DataContract] and [DataMember] elements, I can’t identify the namespace to utilize. According to my research, adding the following should suffice, but this is not the case in my instance.

using System;
using System.Runtime.Serialization;

Here’s an example of my code:

using System;
using System.Runtime.Serialization;

namespace MyNamespace {

    public class Tuple<T1, T2> {
            // A custom implementation of a Tuple

And here’s the error I’m getting:

Is it possible that I’m not using the correct namespaces?

Asked by Otiel

Solution #1

The System contains the DataContractAttribute Class. Runtime. Namespace for serialization.

A reference to System should be added. Runtime. Serialization.dll. However, that assembly isn’t referenced by default. You must manually add an assembly reference to your project by going to References -> Add Reference in the Solution Explorer.

Answered by CD..

Solution #2

You should reference System.Runtime.Serialization.dll because DataContractAttribute is in the System.Runtime.Serialization namespace. It’s only available in.Net versions 3 and up.

Answered by Guillaume

Solution #3

For the.Net 4.0 framework, use Visual Studio.

Answered by Md Kauser Ahmmed

Solution #4

System has the [DataContract] and [DataMember] attributes. The namespace ServiceModel is found in System. ServiceModel.dll is a dll that represents a service model.

System. The System and System are used by ServiceModel. Runtime. To serialize the datamembers, use serialization namespaces.

Answered by Jatin Khurana

Solution #5

I fixed the issue by adding C:Program Files (x86)Reference Assemblies to the path. Microsoft\Framework.NETFramework\v4.0\ The referenced file is System.Runtime.Serialization.dll.

Answered by RotatingWheel

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