用VC2008连接数据库的程序,总是有错,帮忙看一下。
程序代码:
头文件是: #pragma once #include <string> #include <windows.h> #include ".\mysql-connector-c\include\mysql.h" #include "..\winxx\ConnectDB.h" using namespace std; using namespace System; using namespace System::ComponentModel; using namespace System::Collections; using namespace System::Windows::Forms; using namespace System::Data; using namespace System::Drawing; namespace winxx { public ref class ConnectDB : public System::Windows::Forms::Form { private: MYSQL * mysql; public: ConnectDB(void) { InitializeComponent(); } protected: ~ConnectDB() { if (components) { delete components; } } System::Windows::Forms::Button^ button1; System::ComponentModel::Container ^components; #pragma region void InitializeComponent(void) { this->button1 = (gcnew System::Windows::Forms::Button()); this->SuspendLayout(); // // button1 // this->button1->Location = System::Drawing::Point(208, 140); this->button1->Name = L"button1"; this->button1->Size = System::Drawing::Size(75, 23); this->button1->TabIndex = 0; this->button1->Text = L"button1"; this->button1->UseVisualStyleBackColor = true; this->button1->Click += gcnew System::EventHandler(this, &ConnectDB::button1_Click); // // ConnectDB // this->AutoScaleDimensions = System::Drawing::SizeF(6, 12); this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font; this->ClientSize = System::Drawing::Size(292, 266); this->Controls->Add(this->button1); this->Name = L"ConnectDB"; this->Text = L"ConnectDB"; this->ResumeLayout(false); } #pragma endregion private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) { mysql=mysql_init(NULL); _mysql=mysql_real_connect(_mysql,"localhost","root","123","mysql",3306,NULL,0); } }; } 源文件是: #include "StdAfx.h" #include <sstream> #include "ConnectDB.h" namespace winxx { Void button1_Click(System::Object^sender,System::EventArgs^ e) { _mysql=mysql_init(NULL); _mysql=mysql_real_connect(_mysql,"localhost","root","123","mysql",3306,NULL,0); } }