Simple C# Error?

[limecat]

I have the following very short bit of code that I've written in VS 2005 Express:

 using System;
 using System.Windows.Forms;
 
 namespace Tutorials.UsingAForm
 {
 	public class AForm : Form
 	{
 		static void Main()
 		{
 			System.Console.WriteLine("Wheee");
 		}
 	}
 }

When I try to run it, i get the following error:

error CS0012: The type 'System.ComponentModel.IComponent' is defined in an assembly that is not referenced. You must add a reference to assembly 'System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

Anyone know what I'm doing wrong? Google hasn't been very helpful, and I'm new to VS so deciphering this one is proving tricky.

 

[Bohica69]

Haven't run into this error before (99% of my C# code is web stuff) - but it's saying you need to reference an assembly your trying to use - Right click on the references folder on the Solution window, select Add Reference, and go thru the list of assemblies - you probably need at a miniumum, System and System.Windows.Forms. - A google search turns up this: http://msdn2.microsoft.com/en-us/library/system.componentmodel.icomponent.aspx - you need a reference to the System.dll

Anytime I work in VS (especially 2005) if the intellisense isn't working right, then I KNOW I've screwed something up (usually a reference or a using statement)..

Hope this helps.

 

[limecat]

Haven't run into this error before (99% of my C# code is web stuff) - but it's saying you need to reference an assembly your trying to use - Right click on the references folder on the Solution window, select Add Reference, and go thru the list of assemblies - you probably need at a miniumum, System and System.Windows.Forms. - A google search turns up this: http://msdn2.microsoft.com/en-us/library/system.componentmodel.icomponent.aspx - you need a reference to the System.dll

Anytime I work in VS (especially 2005) if the intellisense isn't working right, then I KNOW I've screwed something up (usually a reference or a using statement)..

Hope this helps.

Yeah that fixed it. I had System.Windows.Forms but not System. I added that one in and everything works now. Thanks! =)

BTW, since I'm new to C#, what do these References do, anyways? Are they libraries like C++ <include>s?

 

[Bohica69]

Since I haven't done any C+ coding, I'm not 100% certain

But a quick google search makes me beleive they are the same (or very similar). Basically references in C# are so the compiler knows what dll's need to link in during compilation.

 

[[MS]]

Yup, references tell the compiler what to bind the code against.

The using statements just import namespaces, but a given namespace can span multiple libraries, or there can be multiple alternate implementations of a given namespace.