error LNK2028 & error LNK2019

[conquer_time]

WordStatProcessor.h

#pragma once

#include <string>
#include <iostream>
#include <fstream>

namespace WordStat {
	class WordStatProcessor {
	
	public:
		void process();
	
	private:
	
	};
}

WordStatProcessor.cpp

#include "stdafx.h"
#include "WordStatProcessor.h"

#include <iostream>
#include <fstream>
#include <string>

void process()
{
	std::ifstream myfile ("c:/example.txt");
	std::string line;
	if (myfile.is_open()){
		while (! myfile.eof() ){
			std::getline (myfile,line);
		}
		myfile.close();
	}
}

Form1.h

#pragma once

#include "WordStatProcessor.h"

namespace WordStat {

	using namespace System;
	using namespace System::ComponentModel;
	using namespace System::Collections;
	using namespace System::Windows::Forms;
	using namespace System::Data;
	using namespace System::Drawing;

	public ref class Form1 : public System::Windows::Forms::Form
	{
	public:
		Form1(void)
		{
			InitializeComponent();
		}

	protected:
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::Windows::Forms::GroupBox^  groupBox1;
	protected: 
	private: System::Windows::Forms::Label^  label1;
	private: System::Windows::Forms::GroupBox^  groupBox2;
	private: System::Windows::Forms::GroupBox^  groupBox3;
	private: System::Windows::Forms::ComboBox^  folderDir;
	private: System::Windows::Forms::Button^  button2;
	private: System::Windows::Forms::Label^  currentState;
	private: System::Windows::Forms::Label^  label2;
	private: System::Windows::Forms::FolderBrowserDialog^  folderBrowserDialog;



	private:

		System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code

		void InitializeComponent(void)
		{
                    ....
		}
#pragma endregion
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
			 System::Windows::Forms::DialogResult result = this->folderBrowserDialog->ShowDialog();
			 if(result == System::Windows::Forms::DialogResult::OK){
				 this->folderDir->Text = this->folderBrowserDialog->SelectedPath;
			 }
		 }
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
			 WordStat::WordStatProcessor processor;
			 processor.process();
		 }
};
}

错误

1>------ Build started: Project: WordStat, Configuration: Debug Win32 ------
1>Compiling...
1>WordStatProcessor.cpp
1>WordStat.cpp
1>Generating Code...
1>Linking...
1>WordStat.obj : error LNK2028: unresolved token (0A000015) "public: void __clrcall WordStat::WordStatProcessor::process(void)" (?process@WordStatProcessor@WordStat@@$$FQAMXXZ) referenced in function "private: void __clrcall WordStat::Form1::button2_Click(class System::Object ^,class System::EventArgs ^)" (?button2_Click@Form1@WordStat@@$$FA$AAMXP$AAVObject@System@@P$AAVEventArgs@4@@Z)
1>WordStat.obj : error LNK2019: unresolved external symbol "public: void __clrcall WordStat::WordStatProcessor::process(void)" (?process@WordStatProcessor@WordStat@@$$FQAMXXZ) referenced in function "private: void __clrcall WordStat::Form1::button2_Click(class System::Object ^,class System::EventArgs ^)" (?button2_Click@Form1@WordStat@@$$FA$AAMXP$AAVObject@System@@P$AAVEventArgs@4@@Z)
1>D:\Projects\VisualStudio\WordStat\Debug\WordStat.exe : fatal error LNK1120: 2 unresolved externals
1>Build log was saved at "file://d:\Projects\VisualStudio\WordStat\WordStat\Debug\BuildLog.htm"
1>WordStat - 3 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

迷糊~~~

[ouyh12345]

namespace WordStat {
class WordStatProcessor {

public:
void process();

private:

};
}

namespace WordStat {
void WordStatProcessor:: process()
{
....
}
}

[conquer_time]

...

哈哈~

[w1204jm]

怎么回事？