Visual studio LNK2001, LNK1120.

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I have been try many time to resolve this Error . but still I am not able to solve this problem.
there is not problem form Linker<system or="" advanced<b="">.
the problem come form Linker<input<b>.
I am not able to resolve the Error.
Thank you..
What I have tried:
problem form Linker<system< b=""> or advanced.

For starters and since there's really a lack of detail about how you arrived at this barricade going down the road in VS, click on the "Help" button on the main menu and under the Index tab in the search box type "LNK2001". You should see a list of prefixes "LNK", followed by four digits, the length of which is greater than your arm and hand with extended finger combined.

We cannot fix this for you: we do not have access to your code, and you need this to fix it.
LNK2001 and LNK1120 are both concerned with undefined symbols: your code is referring to a symbol which can't be found in the object files or libraries you are linking together.
Linker Tools Error LNK2001 | Microsoft Docs [ ^ ]
Linker tools error LNK1120 | Microsoft Docs [ ^ ]
The error messages themselves contain the name of the symbol - and we can't even see that, much less the code that tries to reference them, or the list of files that you are trying to link together.
So start with the error message, look at your code, and try to work out where it should be declared.
Sorry, but we can't do any of that for you!

yeah sure.
let me know you that, whenever just run any of the code, Error comes under.

there is simple code but still the Linker Error is coming.

using namespace System;
using namespace System::Windows::Forms;

[STAThreadAttribute]
void Main(array<string^>^ args) {
Application::EnableVisualStyles();
Application::SetCompatibleTextRenderingDefault(false);
//WinformCDemo is your project name
WinformCDemo::MyForm form;
Application::Run(%form);
}

Actually my Linker is reset so help me configure.

Without seeing your code, it's impossible to answer other than to say that you're using a symbol that's still undefined after all your code is linked.
Linker tools error LNK1120 | Microsoft Docs [ ^ ]
Linker Tools Error LNK2001 | Microsoft Docs [ ^ ]

Read the question carefully.

Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.

If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.

Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question. Let's work to help developers, not make them feel stupid.