• C#备份还原MySql数据库 武胜


    通过调用MySql的工具mysqldump来实现。

    类Cmd来实现调用cmd命令,
    要启动的进程所在的目录是说mysql自动的备份还原数据库工具mysqldump和mysql所在目录,当然,这个方法可以执行别的命令行工具。

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

        
    public class Cmd
        {
            
    /// <summary>
            
    /// 执行Cmd命令
            
    /// </summary>
            
    /// <param name="workingDirectory">要启动的进程的目录</param>
            
    /// <param name="command">要执行的命令</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");
            }
        }

    备份方法:

    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=端口号 --user= 用户名 --password=密码 数据库名 -r 备份到的地址";

                    
    //构建执行的命令
                    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=端口号 --user=用户 名 --password=密码 数据库名 -r \"{0}\"", directory);
                        String command 
    = sbcommand.ToString();

                        
    //获取mysqldump.exe所在路径
                        String appDirecroty = System.Windows.Forms.Application.StartupPath + "\\";
                        Cmd.StartCmd(appDirecroty, command);
                        MessageBox.Show(
    @"数据库已成功备份到 " + directory + " 文件中""提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                    }

                }
                
    catch (Exception ex)
                {
                    MessageBox.Show(
    "数据库备份失败!");
                    
                }
            }
            
        }
    }

    还原方法,调用的是mysql自带工具mysql,还原时要注意的是选择的文件所在路径时,文件名要是有空格的话会出
    异常,所以在文件路径名加上双引号""

    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=端口号 --user=用户 名 --password=密码 数据库名<还原文件所在路径";

                
    try
                {
                    StringBuilder sbcommand 
    = new StringBuilder();

                    OpenFileDialog openFileDialog 
    = new OpenFileDialog();

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

                        
    //在文件路径后面加上""避免空格出现异常
                        sbcommand.AppendFormat("mysql --host=localhost --default-character-set=gbk --port=端口 号 --user=用户名 --password=密码 数据库<\"{0}\"", directory);
                        String command 
    = sbcommand.ToString();

                        
    //获取mysql.exe所在路径
                        String appDirecroty = System.Windows.Forms.Application.StartupPath + "\\";

                        DialogResult result 
    = MessageBox.Show("您是否真的想覆盖以前的数据库吗?那么以前的数据库数据将丢失!!!""警告", MessageBoxButtons.YesNo, MessageBoxIcon.Warning);
                        
    if (result == DialogResult.Yes)
                        {
                            Cmd.StartCmd(appDirecroty, command);
                            MessageBox.Show(
    "数据库还原成功!");
                        }
                    }
                    
                }
                
    catch (Exception ex)
                {
                    MessageBox.Show(
    "数据库还原失败!");
                }

            }
            
        }
    }
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  • 原文地址:https://www.cnblogs.com/zeroone/p/1700244.html
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