mySQL备份和还原c＃

Question

代码没有错误。但是当我备份时，文件的大小只有0kb或1kb。而当我恢复时什么都没有发生。所有数据仍然被删除。

备份代码：

string path; 
path = "D:\\MySqlBackup"+ ".sql"; 
StreamWriter file = new StreamWriter(path); 


ProcessStartInfo psi = new ProcessStartInfo(); 
psi.FileName ="C:\\xampp\\mysql\\bin\\mysqldump.exe"; 
psi.RedirectStandardInput = false; 
psi.RedirectStandardOutput = true; 
psi.Arguments = "--user=root --password=database --database=hotelreservationandbillingsystem < D:\\MySqlBackup.sql"; 
psi.UseShellExecute = false; 

Process process = Process.Start(psi); 
string output; 
output = process.StandardOutput.ReadToEnd(); 
file.WriteLine(output); 
process.WaitForExit(); 
file.Close(); 
process.Close(); 
MessageBox.Show("Back Up Successfully!","Saved",MessageBoxButtons.OKCancel,MessageBoxIcon.Information); 

恢复代码：

string path; 
path = "D:\\MySqlBackup.sql"; 
StreamReader file = new StreamReader(path); 
string input = file.ReadToEnd(); 
file.Close(); 

ProcessStartInfo psi = new ProcessStartInfo(); 
psi.FileName = "C:\\xampp\\mysql\\bin\\mysqldump.exe"; 
psi.RedirectStandardInput = true; 
psi.RedirectStandardOutput = false; 
psi.Arguments = "--user=root --password=database --database=hotelreservationandbillingsystem < D:\\MySqlBackup.sql"; 
psi.UseShellExecute = false; 


Process process = Process.Start(psi); 
process.StandardInput.WriteLine(input); 
process.StandardInput.Close(); 
process.WaitForExit(); 
process.Close(); 
MessageBox.Show("Restored Successfully!", "Restored", MessageBoxButtons.OKCancel, MessageBoxIcon.Information); 

Answer 1

为什么你不应该尝试采取备份更简单的方法，并恢复可用的选项 MySqlBackup.NET - MySQL Backup Solution for C#

代码为Backu p是

string constring = "server=localhost;user=root;pwd=qwerty;database=test;"; 
string file = "C:\\backup.sql"; 
using (MySqlConnection conn = new MySqlConnection(constring)) 
{ 
    using (MySqlCommand cmd = new MySqlCommand()) 
    { 
     using (MySqlBackup mb = new MySqlBackup(cmd)) 
     { 
      cmd.Connection = conn; 
      conn.Open(); 
      mb.ExportToFile(file); 
      conn.Close(); 
     } 
    } 
} 

而且恢复

string constring = "server=localhost;user=root;pwd=qwerty;database=test;"; 
string file = "C:\\backup.sql"; 
using (MySqlConnection conn = new MySqlConnection(constring)) 
{ 
    using (MySqlCommand cmd = new MySqlCommand()) 
    { 
     using (MySqlBackup mb = new MySqlBackup(cmd)) 
     { 
      cmd.Connection = conn; 
      conn.Open(); 
      mb.ImportFromFile(file); 
      conn.Close(); 
     } 
    } 
}