Reference to System.Windows.Forms

Question

I'm using C# to command something in Excel but when I type

using System.Windows.Forms

it's not recognized by Visual Studio When I added the reference, I have this error message

A reference to 'System_Windows_Forms' could not be added. The ActiveX type library '...' was exported from a .NET assembly and cannot be added as a reference. Add a reference to the .NET assembly instead

Do you have any solutions?

You should not be typing this by hand usually, if your project is a winforms project then the correct references are added by default in Visual Studio. — Mehdi LAMRANI
– Mehdi LAMRANI, Commented May 2, 2011 at 16:00

simaglei · Accepted Answer · 2011-05-03 00:49:31Z

27

Did you try to add it from the COM-tab? Find the System.Windows.Forms.dll in the .NET-tab instead! (Sorting the dll-s by name makes it so much easier to find the right one.)

answered May 3, 2011 at 0:49

simaglei

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Peter Csala · Accepted Answer · 2021-12-08 19:01:19Z

0

Reference Manager>Assemblies>Framework enter image description here

edited Dec 8, 2021 at 19:01

Peter Csala

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answered Dec 8, 2021 at 18:24

MrShprotter

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2 Comments

Community Over a year ago

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Where is the "Reference Manager"?

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