c# - 访问路径“”“””被拒绝 C#

Question

我在我的电脑上以管理员身份登录，但这显示

这是我的代码：

string file = "C:\\Users\\owner\\Documents\\backup.sql";
using (MySqlConnection conn = new MySqlConnection(constring))
{
    using (MySqlCommand cmd = new MySqlCommand())
    {
        using (MySqlBackup mb = new MySqlBackup(cmd))
        {
            try
            {
                cmd.Connection = conn;
                conn.Open();
                mb.ExportToFile(file);
                conn.Close();
            }catch(Exception ex){
                MessageBox.Show(ex.Message);
            }
        }
    }
}

PS：我的代码顶部已经有一个连接字符串。

Answer 1

由于文件不存在，您可能会收到错误消息。我可能是错的，但我查看了源代码并没有检查文件是否已经存在。

Answer 2

嘿 ？您是否使用 mysqlbackup.dll 作为参考？如果是的话，也许这会有所帮助..只需转到您想要存储已保存文件的文件夹

Private Sub BackupDatabaseToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BackupDatabaseToolStripMenuItem.Click

  'using mysqlbackup.dll as reference

  Dim cmd As MySqlCommand = New MySqlCommand

  cmd.Connection = connect()

  Dim filepth As String = "C:\Users\IT\Documents\DB_Backup.sql"

  Dim mb As MySqlBackup = New MySqlBackup(cmd)

  mb.ExportToFile(filepth)

  MsgBox("Database Backup Successfully !", MsgBoxStyle.Information, "Project")

  disconnect()
End Sub