// 记得加 folderBrowserDialog1   openFileDialog1      控件

using  System.Data.SqlClient;    // 连接数据库   公共变量

namespace  WindowsApplication1.GoodMenhod

{

     class  getSqlConnection

    { 

         string  sql  =   " Data Source=win7-pc;database=Kc;uid=sa;pwd=sa " ;

        SqlConnection conn; 

      

         public  SqlConnection GetCon()

        {

           conn  =   new  SqlConnection(sql);

           conn.Open();

            return  conn;

        }

     

    }

}

using  System.Data.SqlClient;

using  WindowsApplication1.GoodMenhod;   // 引用命名空间

namespace  WindowsApplication1

{

     public   partial   class  Form1 : Form

    {

         public  Form1()

        {

            InitializeComponent();

        }

         private   void  button1_Click( object  sender, EventArgs e)   // 打开 备份路径

        {

             if  (folderBrowserDialog1.ShowDialog()  ==  DialogResult.OK)

            {

                txtPath.Text  =  folderBrowserDialog1.SelectedPath.ToString();

            }

        }

         private   void  button2_Click( object  sender, EventArgs e)   // 备份名称  保存 

        {

             try

            {

                 if  (txtPath.Text  !=   ""  )

                {

                    getSqlConnection geCon  =   new  getSqlConnection();

                    SqlConnection con  =  geCon.GetCon();

                     string  strBacl  =   " backup database Kc to disk=' "   +  txtPath.Text.Trim()  +   " \\ "   +  txtName.Text.Trim()  +   " .bak' " ;

                    SqlCommand Cmd  =   new  SqlCommand(strBacl, con);

                     if  (Cmd.ExecuteNonQuery()  !=   0 )

                    {

                        MessageBox.Show( " 数据备份成功！ " ,  " 提示框 " , MessageBoxButtons.OK, MessageBoxIcon.Information);

                         this .Close();

                    }

                     else

                    {

                        MessageBox.Show( " 数据备份失败！ " ,  " 提示框 " , MessageBoxButtons.OK, MessageBoxIcon.Information);

                    }

                }

                 else

                {

                    MessageBox.Show( " 请填写备份的正确位置及文件名！ " ,  " 提示框 " , MessageBoxButtons.OK, MessageBoxIcon.Information);

                } //  end 

            }

             catch  (Exception ee)

            {

                MessageBox.Show(ee.Message.ToString());

            }

        }

    }

}

    private   void  button3_Click( object  sender, EventArgs e)   // 打开 将要还原的文件

        {

            openFileDialog1.FilterIndex  =   0 ;

            openFileDialog1.FileName  =   "" ;

            openFileDialog1.Filter  =   " txt files (*.bak)|*.bak|All files (*.*)|*.* " ;

             if  (openFileDialog1.ShowDialog()  ==  DialogResult.OK)

            {

                textPaht.Text  =  openFileDialog1.FileName.ToString();

            }

        }

 

private   void  button4_Click( object  sender, EventArgs e)    // 还原

        {

              if  (textPaht.Text  !=   "" )

            {

                getSqlConnection geCon  =   new  getSqlConnection();

                SqlConnection con  =  geCon.GetCon();

                 if  (con.State  ==  ConnectionState.Open)

                {

                    con.Close();

                }

                 // 连接的数据库是master,所以要初始化新的连接字符串

                 string  DateStr  =   " Data Source=win7-pc;Database=master;User id=sa;PWD=sa " ;

                SqlConnection conn  =   new  SqlConnection(DateStr);

                conn.Open();

                 // -------------------杀掉所有连接 db_CSManage 数据库的进程--------------

                //  string sql = " SELECT spid FROM master..sysprocesses WHERE dbid=db_id('" + strDBName + "')";

                 string  strSQL  =   " select spid from master..sysprocesses where dbid=db_id( 'Kc')  " ; // 读取连接当前数据库的进程

                SqlDataAdapter Da  =   new  SqlDataAdapter(strSQL, conn);

                DataTable spidTable  =   new  DataTable();

                Da.Fill(spidTable);

                SqlCommand Cmd  =   new  SqlCommand();

                Cmd.CommandType  =  CommandType.Text;

                Cmd.Connection  =  conn;

                 for  ( int  iRow  =   0 ; iRow  <=  spidTable.Rows.Count  -   1 ; iRow ++ )

                {

                    Cmd.CommandText  =   " kill  "   +  spidTable.Rows[iRow][ 0 ].ToString();    // 强行关闭用户进程 

                    Cmd.ExecuteNonQuery();

                }

                conn.Close();

                conn.Dispose();

                 // --------------------------------------------------------------------

                SqlConnection sqlcon  =   new  SqlConnection(DateStr);

                sqlcon.Open();

                SqlCommand sqlCmd  =   new  SqlCommand( " backup database Kc to disk=' "   +  textPaht.Text.Trim()  +   " ' restore database Kc from disk=' "   +  textPaht.Text.Trim()  +   " ' " , sqlcon);

                sqlCmd.ExecuteNonQuery();

                sqlCmd.Dispose();

                sqlcon.Close();

                sqlcon.Dispose();

                MessageBox.Show( " 数据还原成功！ " ,  " 提示 " , MessageBoxButtons.OK, MessageBoxIcon.Information);

                MessageBox.Show( " 为了必免数据丢失，在数据库还原后将关闭整个系统。 " );

                Application.Exit();

            }

             else

            {

                MessageBox.Show( " 请选择备份文件！ " ,  " 提示 " , MessageBoxButtons.OK, MessageBoxIcon.Warning);

            }

        }

    本文转自曾祥展博客园博客，原文链接：http://www.cnblogs.com/zengxiangzhan/archive/2009/09/23/1572283.html，如需转载请自行联系原作者