c# 通过配置自动附加数据库

using System; 

using System.Collections.Generic;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Data;
using System.ServiceProcess; 

namespace AdminZJC.DataBaseControl
{
 /// <summary>
 /// 数据库操作控制类
 /// </summary>
 public class DataBaseControl
 {
 /// <summary>
 /// 数据库连接字符串
 /// </summary>
 public string ConnectionString; 

 /// <summary>
 /// SQL操作语句/存储过程
 /// </summary>
 public string StrSQL; 

 /// <summary>
 /// 实例化一个数据库连接对象
 /// </summary>
 private SqlConnection Conn; 

 /// <summary>
 /// 实例化一个新的数据库操作对象Comm
 /// </summary>
 private SqlCommand Comm; 

 /// <summary>
 /// 要操作的数据库名称
 /// </summary>
 public string DataBaseName; 

 /// <summary>
 /// 数据库文件完整地址
 /// </summary>
 public string DataBase_MDF; 

 /// <summary>
 /// 数据库日志文件完整地址
 /// </summary>
 public string DataBase_LDF; 

 /// <summary>
 /// 备份文件名
 /// </summary>
 public string DataBaseOfBackupName; 

 /// <summary>
 /// 备份文件路径
 /// </summary>
 public string DataBaseOfBackupPath; 

 /// <summary>
 /// 执行创建/修改数据库和表的操作
 /// </summary>
 public void DataBaseAndTableControl()
 {
 try
 {
 Conn = new SqlConnection(ConnectionString);
 Conn.Open(); 

 Comm = new SqlCommand();
 Comm.Connection = Conn;
 Comm.CommandText = StrSQL;
 Comm.CommandType = CommandType.Text;
 Comm.ExecuteNonQuery(); 

 MessageBox.Show("数据库操作成功！", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 }
 catch (Exception ex)
 {
 MessageBox.Show(ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 }
 finally
 {
 Conn.Close();
 }
 } 

 /// <summary>
 /// 附加数据库
 /// </summary>
 public void AddDataBase()
 {
 try
 {
 Conn = new SqlConnection(ConnectionString);
 Conn.Open(); 

 Comm = new SqlCommand();
 Comm.Connection = Conn;
 Comm.CommandText = "sp_attach_db"; 

 Comm.Parameters.Add(new SqlParameter(@"dbname", SqlDbType.NVarChar));
 Comm.Parameters[@"dbname"].Value = DataBaseName;
 Comm.Parameters.Add(new SqlParameter(@"filename1", SqlDbType.NVarChar));
 Comm.Parameters[@"filename1"].Value = DataBase_MDF;
 Comm.Parameters.Add(new SqlParameter(@"filename2", SqlDbType.NVarChar));
 Comm.Parameters[@"filename2"].Value = DataBase_LDF; 

 Comm.CommandType = CommandType.StoredProcedure;
 Comm.ExecuteNonQuery(); 

 MessageBox.Show("附加数据库成功", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 }
 catch (Exception ex)
 {
 MessageBox.Show(ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 }
 finally
 {
 Conn.Close();
 }
 } 

 /// <summary>
 /// 分离数据库
 /// </summary>
 public void DeleteDataBase()
 {
 try
 {
 Conn = new SqlConnection(ConnectionString);
 Conn.Open(); 

 Comm = new SqlCommand();
 Comm.Connection = Conn;
 Comm.CommandText = @"sp_detach_db"; 

 Comm.Parameters.Add(new SqlParameter(@"dbname", SqlDbType.NVarChar));
Comm.Parameters[@"dbname"].Value = DataBaseName; 

 Comm.CommandType = CommandType.StoredProcedure;
 Comm.ExecuteNonQuery(); 

 MessageBox.Show("分离数据库成功", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 }
 catch (Exception ex)
 {
 MessageBox.Show(ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 }
 finally
 {
 Conn.Close();
 }
 } 

 /// <summary>
 /// 备份数据库
 /// </summary>
 public void BackupDataBase()
 {
 try
 {
 Conn = new SqlConnection(ConnectionString);
 Conn.Open(); 

 Comm = new SqlCommand();
 Comm.Connection = Conn;
 Comm.CommandText = "use master;backup database @dbname to disk = @backupname;"; 

 Comm.Parameters.Add(new SqlParameter(@"dbname", SqlDbType.NVarChar));
 Comm.Parameters[@"dbname"].Value = DataBaseName;
 Comm.Parameters.Add(new SqlParameter(@"backupname", SqlDbType.NVarChar));
 Comm.Parameters[@"backupname"].Value = @DataBaseOfBackupPath + @DataBaseOfBackupName; 

 Comm.CommandType = CommandType.Text;
 Comm.ExecuteNonQuery(); 

 MessageBox.Show("备份数据库成功", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 }
 catch (Exception ex)
 {
 MessageBox.Show(ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 }
 finally
 {
 Conn.Close();
 }
 } 

 /// <summary>
 /// 还原数据库
 /// </summary>
 public void ReplaceDataBase()
 {
 try
 {
 string BackupFile = @DataBaseOfBackupPath + @DataBaseOfBackupName;
 Conn = new SqlConnection(ConnectionString);
 Conn.Open(); 

 Comm = new SqlCommand();
 Comm.Connection = Conn;
 Comm.CommandText = "use master;restore database @DataBaseName From disk = @BackupFile with replace;"; 

 Comm.Parameters.Add(new SqlParameter(@"DataBaseName", SqlDbType.NVarChar));
 Comm.Parameters[@"DataBaseName"].Value = DataBaseName;
 Comm.Parameters.Add(new SqlParameter(@"BackupFile", SqlDbType.NVarChar));
 Comm.Parameters[@"BackupFile"].Value = BackupFile; 

 Comm.CommandType = CommandType.Text;
 Comm.ExecuteNonQuery(); 

 MessageBox.Show("还原数据库成功", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 }
 catch (Exception ex)
 {
 MessageBox.Show(ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 }
 finally
 {
 Conn.Close();
 }
 }
 }
} 

/*
 ///调用事例： 

 　　　还原数据库
 private void button0_Click(object sender, EventArgs e)
 {
 DataBaseControl DBC = new DataBaseControl();
 DBC.ConnectionString = "Data Source=(local);User id=sa;Password=123456; Initial Catalog=master";
 DBC.DataBaseName = "MyDatabase";
 DBC.DataBaseOfBackupName = @"back.bak";
 DBC.DataBaseOfBackupPath = @"D:\Program Files\Microsoft SQL Server\MSSQL\Data\";
 DBC.ReplaceDataBase();
 } 

　　　　附加数据库
 private void button1_Click_1(object sender, EventArgs e)
 {
 DataBaseControl DBC = new DataBaseControl();
 DBC.ConnectionString = "Data Source=(local);User id=sa;Password=123456; Initial Catalog=master";
 DBC.DataBaseName = "MyDatabase";
 DBC.DataBase_MDF = @"D:\Program Files\Microsoft SQL Server\MSSQL\Data\MyDatabase_Data.MDF";
 DBC.DataBase_LDF = @"D:\Program Files\Microsoft SQL Server\MSSQL\Data\MyDatabase_Log.LDF";
 DBC.AddDataBase();
 } 

　　　　备份数据库
 private void button2_Click(object sender, EventArgs e)
 {
 DataBaseControl DBC = new DataBaseControl();
 DBC.ConnectionString = "Data Source=(local);User id=sa;Password=123456; Initial Catalog=master";
 DBC.DataBaseName = "MyDatabase";
 DBC.DataBaseOfBackupName = @"back.bak";
 DBC.DataBaseOfBackupPath = @"D:\Program Files\Microsoft SQL Server\MSSQL\Data\";
 DBC.BackupDataBase();
 } 

　　　　分离数据库
 private void button3_Click(object sender, EventArgs e)
 {
 DataBaseControl DBC = new DataBaseControl();
 DBC.ConnectionString = "Data Source=(local);User id=sa;Password=123456; Initial Catalog=master";
 DBC.DataBaseName = "MyDatabase";
 DBC.DeleteDataBase();
 } 

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