如何使用 C#（Windows 应用程序）将 .bak 文件保存在特定文件夹中

Question

在我的程序中，我使用 C# 保存 Sql 备份文件， 在这个程序中，当我点击按钮“SAVEDIALOG”打开时， 但我想将此文件保存在特定文件夹或特定路径中。

意思是，我不想让用户将此文件保存在除特定路径之外的任何地方。

请帮助我， 下面是编码，我在哪个点击事件上保存我的文件。 注：其桌面应用程序使用 C#，SQL server 2008。

private void btnCreate_Click(object sender, EventArgs e)
{
// If there was a SQL connection created

if (srvSql != null)
{

// If the user has chosen a path where to save the backup file

if (saveBackupDialog.ShowDialog() == DialogResult.OK)
{

// Create a new backup operation

Backup bkpDatabase = new Backup();

// Set the backup type to a database backup

bkpDatabase.Action = BackupActionType.Database;
// Set the database that we want to perform a backup on

bkpDatabase.Database = cmbDatabase.SelectedItem.ToString();

// Set the backup device to a file

BackupDeviceItem bkpDevice = new BackupDeviceItem(saveBackupDialog.FileName, DeviceType.File);

// Add the backup device to the backup

bkpDatabase.Devices.Add(bkpDevice);

// Perform the backup

bkpDatabase.SqlBackup(srvSql);

}
}
else
{

// There was no connection established; probably the Connect button was not clicked

MessageBox.Show("A connection to a SQL server was not established.", "Not Connected to Server", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);

}
}

Answer 1

您可以将路径写入您想要的位置并直接保存而无需询问。您需要删除保存文件对话框。

只需创建一个这样的字符串

string myPath = " a path whic you want to save  ";   


//string myPath = @"C:/backups/mybackup.sql";   

你可以看到上面的固定代码

---

   private void btnCreate_Click(object sender, EventArgs e)
    {
    // If there was a SQL connection created

    if (srvSql != null)
    {

    // If the user has chosen a path where to save the backup file




    // Create a new backup operation

    Backup bkpDatabase = new Backup();

// Set the backup type to a database backup

bkpDatabase.Action = BackupActionType.Database;
// Set the database that we want to perform a backup on

bkpDatabase.Database = cmbDatabase.SelectedItem.ToString();

// Set the backup device to a file

string myPath = " a path whic you want to save  ";   


//string myPath = @"C:/backups/mybackup.sql";   


BackupDeviceItem bkpDevice = new BackupDeviceItem(myPath , DeviceType.File);

// Add the backup device to the backup

bkpDatabase.Devices.Add(bkpDevice);

// Perform the backup

bkpDatabase.SqlBackup(srvSql);


}
else
{

// There was no connection established; probably the Connect button was not clicked

MessageBox.Show("A connection to a SQL server was not established.", "Not Connected to Server", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);

}
 }

Answer 2

使用此代码，这里 DatabaseBackupFilePath 将是保存备份文件的完整 .bak 文件路径。

 using System;
    using System.Configuration;
    using System.IO;
    using System.Data.SqlClient;
    using Microsoft.SqlServer.Management.Smo;
    using Microsoft.SqlServer.Management.Common;

public bool BackupDataBase()
        {
            bool isDatabackedUp = true;
            try
            {
                Backup sqlBackup = new Backup();

                if (null != sqlBackup)
                {
                    //Set the Database backup type
                    sqlBackup.Action = BackupActionType.Database;

                    //Set database backup description to be kept in the back up log table
                    sqlBackup.BackupSetDescription = Constants.DatabaseBackupDescription +
                                                     DateTime.Now.ToShortDateString();

                    sqlBackup.BackupSetName = Constants.DatabaseBackupSetName;

                    //Set the backup file path and backup type
                    BackupDeviceItem deviceItem = new BackupDeviceItem(DatabaseBackupFilePath, DeviceType.File);
                    ServerConnection connection = new ServerConnection(this.BackupConnection);

                    //Set the database name to backup
                    sqlBackup.Database = LocalDatabaseName;
                    sqlBackup.Initialize = true;
                    sqlBackup.Checksum = true;
                    sqlBackup.ContinueAfterError = true;

                    //Set the file details to save the backup
                    sqlBackup.Devices.Add(deviceItem);
                    sqlBackup.Incremental = false;

                    sqlBackup.LogTruncation = BackupTruncateLogType.Truncate;
                    sqlBackup.FormatMedia = false;

                    //Intiate the database backup
                    Server sqlServer = new Server(connection);
                    sqlBackup.SqlBackup(sqlServer);
                }

                return isDatabackedUp;
            }
            catch (Exception ex)
            {
                return false;
            }
        }