Winform中实现连接Mysql8使用mysqldump实现备份表的数据_winfrom mysqldump

场景

Winform中连接Mysql8并查询表中数据进行显示：

Winform中连接Mysql8并查询表中数据进行显示_BADAO_LIUMANG_QIZHI的博客-CSDN博客

在上面实现连接Mysql8的基础上，怎样借助于mysqldump实现数据备份。

注：

博客：
https://blog.csdn.net/badao_liumang_qizhi 
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实现

1、继续上面的winform的布局，设计布局如下

2、获取需要的参数

通过TextBox来获取备份单表的按钮的表名输入，通过Button"选择备份文件路径"以及后面的TextBox来选择要进行备份的路径。

其中选择备份文件的路径的点击事件为

        private void button_select_path_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog path = new FolderBrowserDialog();
            path.ShowDialog();
            this.textBox_bak_path.Text = path.SelectedPath;
        }

然后通过一个TextBox来获取本机(即需要运行Winform的机器)的mysqldump.exe的路径，记得要带双引号。

3、实现单表的备份

然后再备份单表的按钮的点击事件中

        private void button4_Click(object sender, EventArgs e)
        {
            PassForm passForm = new PassForm();
            passForm.ShowDialog();
            //密码验证通过
            if (passForm.DialogResult == DialogResult.OK)
            {
                string mysqlDumpPath = this.text_mysqldump_path.Text.Trim();
                string tableName = this.text_one_table.Text.Trim();
                if (String.IsNullOrEmpty(tableName))
                {
                    MessageBox.Show("表名不能为空！！！");
                }
                else if (String.IsNullOrEmpty(mysqlDumpPath))
                {
                    MessageBox.Show("mysqldump的路径不能为空！！！");
                }
                else
                {
                    string cmdStr = mysqlDumpPath + " -h " + this.host.Text.Trim() + " -u" + this.username.Text.Trim() + " -p" + this.password.Text.Trim() + " " + this.database.Text.Trim() + " " + this.text_one_table.Text.Trim() + " > " + "\"" + this.textBox_bak_path.Text.Trim() + "\\" + "bus_area.sql\"";
                    CmdHelper.ExeCommand(cmdStr);
                }
            }
            else
            {
                MessageBox.Show("密码不正确");
            }
        }

这里首先加了一个密码验证的逻辑，防止误操作乱点按钮，通过后，获取到表名和mysqldump的路径然后进行拼接成cmdStr，

在拼接之后需要打断点到这步获取完整的cmd命令，然后再cmd中先手动执行一下试试。

这里在执行cmd时调用了一个帮助类CmdHelper

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace mysqldatabak
{
    using System;
    using System.Collections.Generic;
    using System.Text;
    using System.Diagnostics;
 
    namespace Helper
    {
        /// <summary>
        /// 执行命令
        /// </summary>
        public class CmdHelper
        {
            ///
            /// 执行cmd.exe命令
            ///
            ///命令文本
            /// 命令输出文本
            public static string ExeCommand(string commandText)
            {
                return ExeCommand(new string[] { commandText });
            }
            ///
            /// 执行多条cmd.exe命令
            ///
            ///命令文本数组
            /// 命令输出文本
            public static string ExeCommand(string[] commandTexts)
            {
                Process p = new Process();
                p.StartInfo.FileName = "cmd.exe";
                p.StartInfo.UseShellExecute = false;
                p.StartInfo.RedirectStandardInput = true;
                p.StartInfo.RedirectStandardOutput = true;
                p.StartInfo.RedirectStandardError = true;
                p.StartInfo.CreateNoWindow = true;
                string strOutput = null;
                try
                {
                    p.Start();
                    foreach (string item in commandTexts)
                    {
                        p.StandardInput.WriteLine(item);
                    }
                    p.StandardInput.WriteLine("exit");
                    strOutput = p.StandardOutput.ReadToEnd();
                    //strOutput = Encoding.UTF8.GetString(Encoding.Default.GetBytes(strOutput));
                    p.WaitForExit();
                    p.Close();
                }
                catch (Exception e)
                {
                    strOutput = e.Message;
                }
                return strOutput;
            }
            ///
            /// 启动外部Windows应用程序，隐藏程序界面
            ///
            ///应用程序路径名称
            /// true表示成功，false表示失败
            public static bool StartApp(string appName)
            {
                return StartApp(appName, ProcessWindowStyle.Hidden);
            }
            ///
            /// 启动外部应用程序
            ///
            ///应用程序路径名称
            ///进程窗口模式
            /// true表示成功，false表示失败
            public static bool StartApp(string appName, ProcessWindowStyle style)
            {
                return StartApp(appName, null, style);
            }
            ///
            /// 启动外部应用程序，隐藏程序界面
            ///
            ///应用程序路径名称
            ///启动参数
            /// true表示成功，false表示失败
            public static bool StartApp(string appName, string arguments)
            {
                return StartApp(appName, arguments, ProcessWindowStyle.Hidden);
            }
            ///
            /// 启动外部应用程序
            ///
            ///应用程序路径名称
            ///启动参数
            ///进程窗口模式
            /// true表示成功，false表示失败
            public static bool StartApp(string appName, string arguments, ProcessWindowStyle style)
            {
                bool blnRst = false;
                Process p = new Process();
                p.StartInfo.FileName = appName;//exe,bat and so on
                p.StartInfo.WindowStyle = style;
                p.StartInfo.Arguments = arguments;
                try
                {
                    p.Start();
                    p.WaitForExit();
                    p.Close();
                    blnRst = true;
                }
                catch
                {
                }
                return blnRst;
            }
        }
 
    }
}

3、测试单表效果

在建立连接成功并配置各项参数后，点击备份单表

验证通过后到指定路径下查看结果

4、备份所有表实现

在备份所有表的点击事件中

        private void button_bak_all_Click(object sender, EventArgs e)
        {
            PassForm passForm = new PassForm();
            passForm.ShowDialog();
            if (passForm.DialogResult == DialogResult.OK)
            {
                DataTable tbName = mySqlConnection.GetSchema("Tables");
                if (tbName.Columns.Contains("TABLE_NAME"))
                {
                    foreach (DataRow dr in tbName.Rows)
                    {
                        string mysqlDumpPath = this.text_mysqldump_path.Text.Trim();
                        string tableName = (string)dr["TABLE_NAME"];
                        string cmdStr = mysqlDumpPath + " -h " + this.host.Text.Trim() + " -u" + this.username.Text.Trim() + " -p" + this.password.Text.Trim() + " " + this.database.Text.Trim() + " " + tableName + " > " + "\"" + this.textBox_bak_path.Text.Trim() + "\\" + tableName + ".sql\"";
                        CmdHelper.ExeCommand(cmdStr);
                        this.log_text.AppendText((string)dr["TABLE_NAME"] + "--备份完成");
                        this.log_text.AppendText("\r\n");
                    }
                }
            }
            else
            {
                MessageBox.Show("密码不正确");
            }
 
        }

逻辑是获取所有的表名然后循环拼接表名进行导出sql

效果