form1.h

《VC++2005编程实例》第三章的源代码

#pragma once


namespace Example {

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


	using namespace System::IO;

	/// <summary>
	/// Form1 摘要
	///
	/// 警告: 如果更改此类的名称，则需要更改
	///          与此类所依赖的所有 .resx 文件关联的托管资源编译器工具的
	///          “资源文件名”属性。否则，
	///          设计器将不能与此窗体的关联
	///          本地化资源正确交互。
	/// </summary>
	public ref class Form1 : public System::Windows::Forms::Form
	{
	public:
		Form1(void)
		{
			InitializeComponent();
			//
			//TODO: 在此处添加构造函数代码
			//
		}

	protected:
		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::Windows::Forms::Label^  label1;
	protected: 
	private: System::Windows::Forms::OpenFileDialog^  openFileDialog1;
	private: System::Windows::Forms::SaveFileDialog^  saveFileDialog1;
	private: System::Windows::Forms::TextBox^  textBox1;
	private: System::Windows::Forms::TextBox^  textBox2;
	private: System::Windows::Forms::Label^  label2;
	private: System::Windows::Forms::Button^  button1;
	private: System::Windows::Forms::Button^  button2;
	private: System::Windows::Forms::Button^  button3;

	private:
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
		/// <summary>
		/// 设计器支持所需的方法 - 不要
		/// 使用代码编辑器修改此方法的内容。
		/// </summary>
		void InitializeComponent(void)
		{
			this->label1 = (gcnew System::Windows::Forms::Label());
			this->openFileDialog1 = (gcnew System::Windows::Forms::OpenFileDialog());
			this->saveFileDialog1 = (gcnew System::Windows::Forms::SaveFileDialog());
			this->textBox1 = (gcnew System::Windows::Forms::TextBox());
			this->textBox2 = (gcnew System::Windows::Forms::TextBox());
			this->label2 = (gcnew System::Windows::Forms::Label());
			this->button1 = (gcnew System::Windows::Forms::Button());
			this->button2 = (gcnew System::Windows::Forms::Button());
			this->button3 = (gcnew System::Windows::Forms::Button());
			this->SuspendLayout();
			// 
			// label1
			// 
			this->label1->AutoSize = true;
			this->label1->Location = System::Drawing::Point(33, 35);
			this->label1->Name = L"label1";
			this->label1->Size = System::Drawing::Size(77, 12);
			this->label1->TabIndex = 0;
			this->label1->Text = L"源文件路径：";
			// 
			// openFileDialog1
			// 
			this->openFileDialog1->FileName = L"openFileDialog1";
			// 
			// textBox1
			// 
			this->textBox1->Location = System::Drawing::Point(126, 30);
			this->textBox1->Name = L"textBox1";
			this->textBox1->Size = System::Drawing::Size(228, 21);
			this->textBox1->TabIndex = 1;
			// 
			// textBox2
			// 
			this->textBox2->Location = System::Drawing::Point(126, 57);
			this->textBox2->Name = L"textBox2";
			this->textBox2->Size = System::Drawing::Size(228, 21);
			this->textBox2->TabIndex = 3;
			// 
			// label2
			// 
			this->label2->AutoSize = true;
			this->label2->Location = System::Drawing::Point(33, 62);
			this->label2->Name = L"label2";
			this->label2->Size = System::Drawing::Size(77, 12);
			this->label2->TabIndex = 2;
			this->label2->Text = L"源文件路径：";
			// 
			// button1
			// 
			this->button1->Location = System::Drawing::Point(35, 91);
			this->button1->Name = L"button1";
			this->button1->Size = System::Drawing::Size(104, 23);
			this->button1->TabIndex = 4;
			this->button1->Text = L"选择源文件";
			this->button1->UseVisualStyleBackColor = true;
			this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
			// 
			// button2
			// 
			this->button2->Location = System::Drawing::Point(142, 91);
			this->button2->Name = L"button2";
			this->button2->Size = System::Drawing::Size(104, 23);
			this->button2->TabIndex = 5;
			this->button2->Text = L"选择目标文件";
			this->button2->UseVisualStyleBackColor = true;
			this->button2->Click += gcnew System::EventHandler(this, &Form1::button2_Click);
			// 
			// button3
			// 
			this->button3->Location = System::Drawing::Point(249, 91);
			this->button3->Name = L"button3";
			this->button3->Size = System::Drawing::Size(104, 23);
			this->button3->TabIndex = 6;
			this->button3->Text = L"开始复制文件";
			this->button3->UseVisualStyleBackColor = true;
			this->button3->Click += gcnew System::EventHandler(this, &Form1::button3_Click);
			// 
			// Form1
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(6, 12);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(390, 144);
			this->Controls->Add(this->button3);
			this->Controls->Add(this->button2);
			this->Controls->Add(this->button1);
			this->Controls->Add(this->textBox2);
			this->Controls->Add(this->label2);
			this->Controls->Add(this->textBox1);
			this->Controls->Add(this->label1);
			this->Name = L"Form1";
			this->StartPosition = System::Windows::Forms::FormStartPosition::CenterScreen;
			this->Text = L"演示使用缓冲流复制文件";
			this->ResumeLayout(false);
			this->PerformLayout();

		}
#pragma endregion
//选择源文件
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
   String^ MyFileName;
   if(this->openFileDialog1->ShowDialog()==System::Windows::Forms::DialogResult::OK)
   {
      MyFileName=this->openFileDialog1->FileName;
      this->textBox1->Text=MyFileName;
   }
}
//选择目标文件
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
   String^ MyFileName;
   if(this->saveFileDialog1->ShowDialog()==System::Windows::Forms::DialogResult::OK)
   {
      MyFileName=this->saveFileDialog1->FileName;
      this->textBox2->Text=MyFileName;
   }
}
//开始复制文件
private: System::Void button3_Click(System::Object^  sender, System::EventArgs^  e) {
   String^ MySourceFile;
   String^ MyTargetFile;
   Stream^ MyInputStream;
   Stream^ MyOutputStream;
   BufferedStream^ MyBufferedInput ;
   BufferedStream^ MyBufferedOutput;
   array<unsigned char>^ MyBuffer=gcnew array<unsigned char>(1024);
   int MyBytesRead;
   MySourceFile=this->textBox1->Text;
   MyTargetFile=this->textBox2->Text;
   if(!File::Exists(MySourceFile))
   {
	  MessageBox::Show("源文件不存在！","信息提示",MessageBoxButtons::OK,MessageBoxIcon::Information);
	  return;
   }
   if(MyTargetFile->Length<1)
   {
	  MessageBox::Show("请选择一个目标文件！","信息提示",MessageBoxButtons::OK,MessageBoxIcon::Information);
	  return;
   }
   try
   {
	  //创建二进制流
	   MyInputStream=File::OpenRead(MySourceFile);
	   MyOutputStream=File::OpenWrite(MyTargetFile);
	   //创建二进制缓冲流
	   MyBufferedInput=gcnew BufferedStream(MyInputStream);
	   MyBufferedOutput=gcnew BufferedStream(MyOutputStream);
       MyBytesRead=MyBufferedInput->Read(MyBuffer,0,1024);
	   while(MyBytesRead>0)
	   {
       	 MyBufferedOutput->Write(MyBuffer,0,MyBytesRead);
         MyBytesRead=MyBufferedInput->Read(MyBuffer,0,1024);
	   }
	   MyBufferedOutput->Flush();
	   MyBufferedInput->Close();
	   MyBufferedOutput->Close();
	   MessageBox::Show("复制文件操作完成！","信息提示",MessageBoxButtons::OK,MessageBoxIcon::Information);
   }
   catch(Exception^ MyEx)
   {   
	   MessageBox::Show("复制文件操作失败："+MyEx->Message,"信息提示",MessageBoxButtons::OK,MessageBoxIcon::Information);
   }
}
};
}