///執行Cmd命" />

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C#備份還原MySql數據庫

系統 3055 0

??????調用MySql的工具mysqldump來實現。

??????類Cmd來實現調用cmd命令,
要啟動的進程所在的目錄是說mysql自動的備份還原數據庫工具mysqldump和mysql所在目錄,當然,這個方法可以執行別的命令行工具。

?

代碼
using ?System;
using ?System.Collections.Generic;
using ?System.Text;
using ?System.Diagnostics;

????
public ? class ?Cmd
????{
????????
/// ? <summary>
????????
/// ?執行Cmd命令
????????
/// ? </summary>
????????
/// ? <param?name="workingDirectory"> 要啟動的進程的目錄 </param>
????????
/// ? <param?name="command"> 要執行的命令 </param>
???????? public ? static ? void ?StartCmd(String?workingDirectory,?String?command)
????????{
????????????Process?p?
= ? new ?Process();
????????????p.StartInfo.FileName?
= ? " cmd.exe " ;
????????????p.StartInfo.WorkingDirectory?
= ?workingDirectory;
????????????p.StartInfo.UseShellExecute?
= ? false ;
????????????p.StartInfo.RedirectStandardInput?
= ? true ;
????????????p.StartInfo.RedirectStandardOutput?
= ? true ;
????????????p.StartInfo.RedirectStandardError?
= ? true ;
????????????p.StartInfo.CreateNoWindow?
= ? true ;
????????????p.Start();
????????????p.StandardInput.WriteLine(command);
????????????p.StandardInput.WriteLine(
" exit " );
????????}
????}

?

?

備份方法:

?

代碼
using ?System;
using ?System.Collections.Generic;
using ?System.ComponentModel;
using ?System.Data;
using ?System.Drawing;
using ?System.Text;
using ?System.Windows.Forms;
using ?System.IO;
using ?System.Diagnostics;
using ?System.Configuration;

using ?MDRClient.DataAccess;

namespace ?MDRClient
{
????
public ? partial ? class ?DataBackup?:?Form
????{
????????
public ?DataBackup()
????????{
????????????InitializeComponent();
????????}

????????
private ? void ?btnBackup_Click( object ?sender,?EventArgs?e)
????????{
????????????
try
????????????{
????????????????
// String?command?=?"mysqldump?--quick?--host=localhost?--default-character-set=gb2312?--lock-tables?--verbose??--force?--port=端口號?--user=用戶名?--password=密碼?數據庫名?-r?備份到的地址";

????????????????
// 構建執行的命令
????????????????StringBuilder?sbcommand? = ? new ?StringBuilder();

????????????????StringBuilder?sbfileName?
= ? new ?StringBuilder();
????????????????sbfileName.AppendFormat(
" {0} " ,?DateTime.Now.ToString()).Replace( " - " ,? "" ).Replace( " : " ,? "" ).Replace( " ? " ,? "" );
????????????????String?fileName?
= ?sbfileName.ToString();

????????????????SaveFileDialog?saveFileDialog?
= ? new ?SaveFileDialog();
????????????????saveFileDialog.AddExtension?
= ? false ;
????????????????saveFileDialog.CheckFileExists?
= ? false ;
????????????????saveFileDialog.CheckPathExists?
= ? false ;
????????????????saveFileDialog.FileName?
= ?fileName;

????????????????
if ?(saveFileDialog.ShowDialog()? == ?DialogResult.OK)
????????????????{
????????????????????String?directory?
= ?saveFileDialog.FileName;

????????????????????sbcommand.AppendFormat(
" mysqldump?--quick?--host=localhost?--default-character-set=gbk?--lock-tables?--verbose??--force?--port=端口號?--user=用戶名?--password=密碼?數據庫名?-r?\ " { 0 }\ "" ,?directory);
????????????????????String?command?
= ?sbcommand.ToString();

????????????????????
// 獲取mysqldump.exe所在路徑
????????????????????String?appDirecroty? = ?System.Windows.Forms.Application.StartupPath? + ? " \\ " ;
????????????????????Cmd.StartCmd(appDirecroty,?command);
????????????????????MessageBox.Show(
@" 數據庫已成功備份到? " ? + ?directory? + ? " ?文件中 " ,? " 提示 " ,?MessageBoxButtons.OK,?MessageBoxIcon.Information);
????????????????}

????????????}
????????????
catch ?(Exception?ex)
????????????{
????????????????MessageBox.Show(
" 數據庫備份失敗! " );
????????????????
????????????}
????????}
????????
????}
}

?

?

還原方法,調用的是mysql自帶工具mysql,還原時要注意的是選擇的文件所在路徑時,文件名要是有空格的話會出
異常,所以在文件路徑名加上雙引號""

?

代碼
using ?System;
using ?System.Collections.Generic;
using ?System.ComponentModel;
using ?System.Data;
using ?System.Drawing;
using ?System.Text;
using ?System.Windows.Forms;
using ?System.IO;
using ?System.Diagnostics;
using ?System.Configuration;

using ?MDRClient.DataAccess;

namespace ?MDRClient
{
????
public ? partial ? class ?DataRestore?:?Form
????{
????????
public ?DataRestore()
????????{
????????????InitializeComponent();
????????}

????????
private ? void ?btnRestore_Click( object ?sender,?EventArgs?e)
????????{

????????????
// string?s?=?"mysql?--port=端口號?--user=用戶名?--password=密碼?數據庫名<還原文件所在路徑";

????????????
try
????????????{
????????????????StringBuilder?sbcommand?
= ? new ?StringBuilder();

????????????????OpenFileDialog?openFileDialog?
= ? new ?OpenFileDialog();

????????????????
if ?(openFileDialog.ShowDialog()? == ?DialogResult.OK)
????????????????{
????????????????????String?directory?
= ?openFileDialog.FileName;

????????????????????
// 在文件路徑后面加上""避免空格出現異常
????????????????????sbcommand.AppendFormat( " mysql?--host=localhost?--default-character-set=gbk?--port=端口號?--user=用戶名?--password=密碼?數據庫<\ " { 0 }\ "" ,?directory);
????????????????????String?command?
= ?sbcommand.ToString();

????????????????????
// 獲取mysql.exe所在路徑
????????????????????String?appDirecroty? = ?System.Windows.Forms.Application.StartupPath? + ? " \\ " ;

????????????????????DialogResult?result?
= ?MessageBox.Show( " 您是否真的想覆蓋以前的數據庫嗎?那么以前的數據庫數據將丟失!!! " ,? " 警告 " ,?MessageBoxButtons.YesNo,?MessageBoxIcon.Warning);
????????????????????
if ?(result? == ?DialogResult.Yes)
????????????????????{
????????????????????????Cmd.StartCmd(appDirecroty,?command);
????????????????????????MessageBox.Show(
" 數據庫還原成功! " );
????????????????????}
????????????????}
????????????????
????????????}
????????????
catch ?(Exception?ex)
????????????{
????????????????MessageBox.Show(
" 數據庫還原失敗! " );
????????????}

????????}
????????
????}
}

?

?

C#備份還原MySql數據庫


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