How to add a reference to System.Numerics.dll

Question

I want to use the BigInteger class from the System.Numerics but if i want to write

using System.Numerics;

Numerics is not found. I searched the web, and I found that I have to add a reference to System.Numerics.dll, but how can I do that?

What version of .Net are you using? System.Numerics is only in 4.0+ — Gage, Mar 22 '12 at 14:41
hence `BigInteger` came with .net 4.0 http://msdn.microsoft.com/en-us/library/system.numerics.biginteger.aspx — Daniel A. White, Mar 22 '12 at 14:42
funny that a lot of "answers" are telling him to add the reference when he already knows what he has to do.. he just wants to know *how* to do it... — MilkyWayJoe, Mar 22 '12 at 14:50

score 34 · Accepted Answer · answered Mar 22 '12 at 14:41

34

http://msdn.microsoft.com/en-us/library/7314433t(v=vs.80).aspx

From MSDN:

In Solution Explorer, select the project.
On the Project menu, choose Add Reference.
The Add Reference dialog box opens.
Select the tab indicating the type of component you want to reference.
In the top pane, select the component you want to reference, and then click the Select button. Press CTRL while clicking to select multiple components.

answered Mar 22 '12 at 14:41

Dave Bish

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I have Visual Studio 2013. How is it possible to not have this file? Where can I safely download it? – user3822370 Aug 02 '15 at 03:02

score 16 · Answer 2 · answered Mar 22 '12 at 14:42

16

Right click on "References" in the solution explorer and click on "Add Reference" as shown below in the image.

enter image description here

answered Mar 22 '12 at 14:42

Brian

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This is a great way to visually see what is added. Thanks. – Xonatron Dec 11 '18 at 00:55

score 9 · Answer 3 · answered Mar 22 '12 at 14:42

9

If you are using .NET 4.0, you can right click in References -> add reference -> In the .NET tab, look for System.Numerics.dll

enter image description here

answered Mar 22 '12 at 14:42

gprasant

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I don't get the option to add reference – Squareoot May 13 '20 at 18:56

score 4 · Answer 4 · answered Mar 22 '12 at 14:42

in Visual Studio, go to Solition Exporer, expand your project, right click in a folder called "References" and click "Add References", browse the references (assemblies) until you find the one you want. If you're using VS 2010, you can simply type "system.numerics" on the search up top. Then just select the reference and click Add, then Close.

score 3 · Answer 5 · edited Jun 18 '18 at 16:04

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Right click the Reference folder in your solution and choose Add Reference. Then go to <systemDrive>:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Numerics\v4.0_4.0.0.0__b77a5c561934e089 (That's what it is for me; your path might be different.)

edited Jun 18 '18 at 16:04

Andrew Myers

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answered Mar 22 '12 at 14:45

Radislav

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How to add a reference to System.Numerics.dll

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