前言

　　利用C#調用CMD窗口實現修改數據庫密碼

　　實現思路:

　　　　　　先通過odbc連接數據庫，獲取到Mysql的根目錄。根據根目錄的路徑調用CMD，連接MySQL，實現修改MySQL數據庫密碼。

 1 private void modifyPath_Click(object sender, EventArgs e)
 2 {
 3     bool isD = true;
 4     string MysqlPath = string.Empty;
 5     try
 6     {
 7         //獲取MySQL安裝路徑
 8         DataTable db = ExecuteQuery("
 
select @@basedir as basePath from dual","123");
 9         string sqlPath = string.Empty;
10         sqlPath = db.Rows[0]["basePath"].ToString();
11         //只判斷目錄在C/D盤的可能
12         if (sqlPath.Contains("D:"))
13         {
14             path = sqlPath.Replace("D:", "");
15         }
16         else
17
 
         {
18             path = sqlPath.Replace("C:", "");
19             isD = false;
20         }
21     }
22     catch
23     {
24         Application.Exit();
25     }
26 
27     Process process = new Process();//創建進程對象
28     try
29     {
30         ProcessStartInfo startInfo = new ProcessStartInfo();
 
31         startInfo.FileName = "cmd.exe";//設定需要執行的命令
32         //startInfo.Arguments = "/C " + 2;//“/C”表示執行完命令後馬上退出
33         startInfo.UseShellExecute = false;//不使用系統外殼程序啟動
34         startInfo.RedirectStandardInput = true;//不重定向輸入
35         startInfo.RedirectStandardOutput = true; //重定向輸出
36         //startInfo.RedirectStandardError = true;   //重定向標準錯誤輸出
37         startInfo.CreateNoWindow = true;//不創建窗口
38         process.StartInfo = startInfo;
39         if (process.Start())//開始進程
40         {
41             string newPsd = "123456";
42             newPsd = "mysqladmin -u root -p123 password " + newPsd;
43             if (isD)
44             {
45                 process.StandardInput.WriteLine("d:");
46             }
47             else
48             {
49                 process.StandardInput.WriteLine("cd\\");
50             }
51             process.StandardInput.WriteLine("cd" + path +"bin");
52             process.StandardInput.WriteLine(newPsd);
53         }
54     }
55     catch (Exception ex)
56     {
57         ex.ToString();
58     }
59     finally
60     {
61         if (process != null)
62             process.Close();
63     }
64 }

//備註: 密碼可以采用密文的方式，此處為了方便

連接數據庫語句ExecuteQuery的方法

 1 public static DataTable ExecuteQuery(string commandText, string psd)
 2 {
 3     DataSet dataSet = new DataSet();
 4     string connectionString = "DRIVER={MySQL ODBC 3.51 Driver};SERVER=localhost;OPTION=3;UID=root;PASSWORD=" + psd + ";Stmt=SET NAMES gb2312;";
 5     IDbConnection dbConnection = new OdbcConnection(connectionString);
 6     DataTable result;
 7     try
 8     {
 9         if (dbConnection.State == ConnectionState.Closed)
10         {
11             dbConnection.Open();
12         }
13         IDbCommand dbCommand = dbConnection.CreateCommand();
14         dbCommand.CommandText = commandText;
15         ((IDataAdapter)new OdbcDataAdapter
16         {
17             SelectCommand = dbCommand
18         }).Fill(dataSet);
19         result = dataSet.Tables[0];
20     }
21     catch (Exception ex)
22     {
23         MessageBox.Show("系統不兼容，配置失敗");
24         Application.Exit();
25         result = null;
26     }
27     finally
28     {
29         try
30         {
31             dbConnection.Close();
32         }
33         catch
34         {
35         }
36     }
37     return result;
38 }

使用C#修改MySQL數據庫用戶的root密碼