.net数据库备份还原方法
web网站数据定时备份是不可少的，我们开的网也会经常碰到网站备份这个功能，下面我们来介绍一下关于asp教程.net对mssqlserver数据库教程备份还原的方法吧。
using System.Data.SqlClient;
using System.IO;
string SqlStr1 = "Server=(local);DataBase=master;Uid=sa;Pwd=";
string SqlStr2 = "Exec sp_helpdb";
string SqlStr1 = "Server=(local);database='" + this.DropDownList1.SelectedValue + "';Uid=sa;Pwd=";
string SqlStr2 = "backup database " + this.DropDownList1.SelectedValue + " to disk='" + this.TextBox1.Text.Trim() + ".bak'";
2.后台
using System.Data.SqlClient;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string SqlStr1 = "Server=(local);DataBase=master;Uid=sa;Pwd=";
string SqlStr2 = "Exec sp_helpdb";
SqlConnection con = new SqlConnection(SqlStr1);
con.Open();
SqlCommand com = new SqlCommand(SqlStr2, con);
SqlDataReader dr = com.ExecuteReader();
this.DropDownList1.DataSource = dr;
this.DropDownList1.DataTextField = "name";
this.DropDownList1.DataBind();
dr.Close();
con.Close();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string SqlStr1 = "Server=(local);database='" + this.DropDownList1.SelectedValue + "';Uid=sa;Pwd=";
string SqlStr2 = "backup database " + this.DropDownList1.SelectedValue + " to disk='" + this.TextBox1.Text.Trim() + ".bak'";
SqlConnection con = new SqlConnection(SqlStr1);
con.Open();
try
{
if (File.Exists(this.TextBox1.Text.Trim()))
{
Response.Write(" ");
return;
}
SqlCommand com = new SqlCommand(SqlStr2, con);
com.ExecuteNonQuery();
Response.Write(" ");
}
catch (Exception error)
{
Response.Write(error.Message);
Response.Write(" ");
}
finally
{
con.Close();
}
}
}
还原SqlServer
核心技术:
string SqlStr1 = "Server=(local);database='" + this.DropDownList1.SelectedValue + "';Uid=sa;Pwd=";
string SqlStr2 = "use master restore database " + dbname + " from disk='" + path + "'";
1.前台
操 作 数 据 库操 作 数 据 库
2.后台
using System.Data.SqlClient;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
string SqlStr1 = "Server=(local);DataBase=master;Uid=sa;Pwd=";
string SqlStr2 = "Exec sp_helpdb";
SqlConnection con = new SqlConnection(SqlStr1);
con.Open();
SqlCommand com = new SqlCommand(SqlStr2, con);
SqlDataReader dr = com.ExecuteReader();
this.DropDownList1.DataSource = dr;
this.DropDownList1.DataTextField = "name";
this.DropDownList1.DataBind();
dr.Close();
con.Close();
}
}
protected void Button1_Click(object sender, EventArgs e)
{
string path = this.FileUpload1.PostedFile.FileName; //获得备份路径及数据库名称
string dbname = this.DropDownList1.SelectedValue;
string SqlStr1 = "Server=(local);database='" + this.DropDownList1.SelectedValue + "';Uid=sa;Pwd=";
string SqlStr2 = "use master restore database " + dbname + " from disk='" + path + "'";
SqlConnection con = new SqlConnection(SqlStr1);
con.Open();
try
{
SqlCommand com = new SqlCommand(SqlStr2, con);
com.ExecuteNonQuery();
Response.Write(" ");
}
catch (Exception error)
{
Response.Write(error.Message);
Response.Write(" ");
}
finally
{
con.Close();
}
}
}
网上找的另一种备份还原数据库的方法
.net实现数据库备份及还原 收藏
///
/// 备份数据库
///
private void btnBackUp_Click(object sender, System.EventArgs e)
{
this.Cursor = Cursors.WaitCursor;
this.label1.Text = " 正在进行档案库的数据备份，这可能需要几秒到几十的时间，请稍候...";
this.label1.Visible = true;
this.label1.Refresh();
this.pBar1.Visible = true;
//------------------------------------------------------------------------------------
string selfName = “D:NorthwindBak“;
string deviceName = “NorthwindBak“;
string remark = "备份测试";
//◆数据备份：
SQLDMO.Backup oBackup = new SQLDMO.BackupClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
oBackup.Action = 0 ;
oBackup.Initialize = true ;
SQLDMO.BackupSink_PercentCompleteEventHandler pceh = new SQLDMO.BackupSink_PercentCompleteEventHandler(Step);
oBackup.PercentComplete += pceh;try
{
oSQLServer.LoginSecure = false;
oSQLServer.Connect(Common.MySettings.SqlServerName, "sa", "");
oBackup.Action = SQLDMO.SQLDMO_BACKUP_TYPE.SQLDMOBackup_Database;
oBackup.Database = "Northwind";//数据库名
oBackup.Files = selfName;//文件路径
oBackup.BackupSetName = deviceName;//备份名称
oBackup.BackupSetDescription = remark;//备份描述
oBackup.Initialize = true;
oBackup.SQLBackup(oSQLServer);
}
catch(System.Exception ex)
{
Common.ShowMsg("数据备份失败：n" + ex.ToString());
}
finally
{
oSQLServer.DisConnect();
}//------------------------------------------------------------------------------------
this.label1.Visible = false;
this.pBar1.Visible = false;
this.Cursor = Cursors.Default;
}
///
/// 显示备份进度条
///
private void Step(string message,int percent)
{
this.pBar1.Value = percent ;
}
还原方法数据还原 ：
///
/// 还原数据库
///
private void btnRestore_Click(object sender, System.EventArgs e)
{
this.Cursor = Cursors.WaitCursor;
this.label1.Text = " 正在进行档案库的数据还原，这可能需要几秒到几十的时间，请稍候...";
this.label1.Visible = true;
this.label1.Refresh();
this.pBar1.Visible = true;
//------------------------------------------------------------------------------------string fileName = "NorthwindBak";
string filePath = "D:NorthwindBak";
string remark = "备份测试";SQLDMO.Restore oRestore = new SQLDMO.RestoreClass();
SQLDMO.SQLServer oSQLServer = new SQLDMO.SQLServerClass();
oRestore.Action = 0 ;
SQLDMO.RestoreSink_PercentCompleteEventHandler pceh = new SQLDMO.RestoreSink_PercentCompleteEventHandler(Step);
oRestore.PercentComplete += pceh;
try
{
oSQLServer.Connect(Common.MySettings.SqlServerName, "sa", "");
SQLDMO.QueryResults qr = oSQLServer.EnumProcesses(-1) ;
int iColPIDNum = -1 ;
int iColDbName = -1 ;//杀死其它的连接进程
for(int i=1;i<=qr.Columns;i++)
{
string strName = qr.get_ColumnName(i) ;
if (strName.ToUpper().Trim() == "SPID")
{
iColPIDNum = i ;
}
else if (strName.ToUpper().Trim() == "DBNAME")
{
iColDbName = i ;
}
if (iColPIDNum != -1 && iColDbName != -1)
break ;
}for(int i=1;i<=qr.Rows;i++)
{
int lPID = qr.GetColumnLong(i,iColPIDNum) ;
string strDBName = qr.GetColumnString(i,iColDbName) ;
if (strDBName.ToUpper() == "CgRecord".ToUpper())
oSQLServer.KillProcess(lPID) ;
}
oRestore.Action = SQLDMO.SQLDMO_RESTORE_TYPE.SQLDMORestore_Database;
oRestore.Database = "Northwind";
oRestore.Files = filePath;
oRestore.FileNumber = 1;
oRestore.ReplaceDatabase = true;
oRestore.SQLRestore(oSQLServer);
}
catch(System.Exception ex)
{
Common.ShowMsg("数据还原失败：n" + ex.ToString());
}
finally
{
oSQLServer.DisConnect();
}
//------------------------------------------------------------------------------------
this.label1.Visible = false;
this.pBar1.Visible = false;
this.Cursor = Cursors.Default;
}///
/// 显示还原进度条
///
private void Step(string message,int percent)
{
this.pBar1.Value = percent ;
}
