方法一：
1.如果附加資料庫時，沒有指定邏輯名，則在SQL2005上顯示為「全路徑，且為大寫」。例如，資料庫檔案D:MyTest.mdf和D:MyTest.ldf，附加到SQL伺服器上時，如果沒有指定邏輯名，則在SQL2005上顯示為「D:MYTEST.MDF」。此時，C#的連線字串為「DataSource=dsName;AttatchDBFilename=」D:MyTest.mdf」;User ID=id;Password=pw」；
2.如果附加資料庫時，指定了邏輯名，則在SQL2005上顯示為“邏輯名”，此時，C#的連接字串為“DataSource=dsName;AttatchDBFilename=”D:MyTest.mdf”;Initial Catalog =aa_LogicName;User ID=id;Password=pw」；
3.被附加的資料庫名稱不可隨意更改；否則容易發生錯誤。
方法二：
string DbPath=System.Environment.CurrentDirectory +@"Demo_Data.MDF ";
string LogPath=System.Environment.CurrentDirectory +@"Demo_Log.LDF ";
string StrSql="exec sp_attach_db @dbname='supmark',@filename1='"+DbPath+"',@filename2='"+LogPath+"'";
string strcon="Server=(local);Integrated Security=SSPI;Database=master";
SqlConnection cn=new SqlConnection(strcon);
SqlCommand cmd =new SqlCommand (StrSql,cn);
cn.Open();
cmd.ExecuteNonQuery();
cn.Close();
方法三詳細程式碼：
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Data.SqlClient;
using System.Data;
using System.ServiceProcess;
namespace AdminZJC.DataBaseControl
{
/// <summary>
/// 資料庫操作控制類
/// </summary>
public class DataBaseControl
{
/// <summary>
/// 資料庫連接字串
/// </summary>
public string ConnectionString;
/// <summary>
/// SQL操作語句/預存程序
/// </summary>
public string StrSQL;
/// <summary>
/// 實例化一個資料庫連線對象
/// </summary>
private SqlConnection Conn;
/// <summary>
/// 實例化一個新的資料庫操作物件Comm
/// </summary>
private SqlCommand Comm;
/// <summary>
/// 要操作的資料庫名稱
/// </summary>
public string DataBaseName;
/// <summary>
/// 資料庫檔案完整地址
/// </summary>
public string DataBase_MDF;
/// <summary>
/// 資料庫日誌檔案完整地址
/// </summary>
public string DataBase_LDF;
/// <summary>
/// 備份檔名
/// </summary>
public string DataBaseOfBackupName;
/// <summary>
/// 備份檔案路徑
/// </summary>
public string DataBaseOfBackupPath;
/// <summary>
/// 執行建立/修改資料庫和表格的操作
/// </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("資料庫操作成功！", "訊息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "訊息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
finally
{
Conn.Close();
}
}
/// <summary>
/// 附加資料庫
/// </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("附加資料庫成功", "訊息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "訊息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
finally
{
Conn.Close();
}
}
/// <summary>
/// 分離資料庫
/// </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("分離資料庫成功", "訊息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "訊息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
finally
{
Conn.Close();
}
}
/// <summary>
/// 備份資料庫
/// </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("備份資料庫成功", "訊息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "訊息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
finally
{
Conn.Close();
}
}
/// <summary>
/// 還原資料庫
/// </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("還原資料庫成功", "訊息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "訊息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
finally
{
Conn.Close();
}
}
}
}
/*
///呼叫事例：
#------------------------------------------------- ---還原資料庫--------------------------------------------- ------------#
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 FilesMicrosoft SQL ServerMSSQLData";
DBC.ReplaceDataBase();
}
#------------------------------------------------- -附加資料庫----------------------------------------------------- ----------#
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 FilesMicrosoft SQL ServerMSSQLDataMyDatabase_Data.MDF";
DBC.DataBase_LDF = @"D:Program FilesMicrosoft SQL ServerMSSQLDataMyDatabase_Log.LDF";
DBC.AddDataBase();
}
#----------------------------------------------------備份資料庫--------- -------------------------------------------------- ---------#
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 FilesMicrosoft SQL ServerMSSQLData";
DBC.BackupDataBase();
}
#----------------------------------------分離資料庫------- -------------------------------------------------- --------#
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();