Question

代码没有错误。但是当我备份时，文件的大小只有0kb或1kb。当我恢复没有任何反应。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

为什么不尝试更简单的方法来获取备份和恢复选项 MySqlBackup.NET - MySQL Backup Solution for C#

备份的代码

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();
        }
    }
}

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();
        }
    }
}

mySQL备份和恢复c＃

1 个答案: