帶實體框架的SQL數據庫備份6

Question

string dbname = _dbContext.Database.Connection.Database; 

const string sqlCommand = @"BACKUP DATABASE [{0}] TO DISK = N'{1}' WITH NOFORMAT, 
    NOINIT, NAME = N'MajesticDb-Ali-Full Database Backup', 
    SKIP, NOREWIND, NOUNLOAD, STATS = 10"; 

int path = _dbContext.Database.ExecuteSqlCommand(System.Data.Entity.TransactionalBehavior 
    .DoNotEnsureTransaction, 
    string.Format(sqlCommand, dbname, "MajesticDB")); 

我正在使用此代碼進行數據庫備份。它工作正常，但是這個代碼正在用新的代碼取代以前的文件。我如何改變它，所以它不？

Answer 1

你可以嘗試這樣的事：

string backupname= "MajesticDB" + DateTime.Now.ToString("yyyyMMddHHmm"); 
const string sqlCommand = @"BACKUP DATABASE [{0}] TO DISK = N'{1}' WITH NOFORMAT, NOINIT, NAME = N'MajesticDb-Ali-Full Database Backup', SKIP, NOREWIND, NOUNLOAD, STATS = 10"; 
     int path= _dbContext.Database.ExecuteSqlCommand(System.Data.Entity.TransactionalBehavior.DoNotEnsureTransaction, string.Format(sqlCommand, dbname, backupname)); 

這種方式，備份名稱「MajesticDB」附加日期和時間，所以每次打電話給你的備份程序，數據庫將被備份用不同的名稱。

Answer 2

試試這個。

string dbname = _dbContext.Database.Connection.Database; 
string dbBackUp= "MajesticDB" + DateTime.Now.ToString("yyyyMMddHHmm"); 
const string sqlCommand = @"BACKUP DATABASE [{0}] TO DISK = N'{1}' WITH NOFORMAT, NOINIT, NAME = N'MajesticDb-Ali-Full Database Backup', SKIP, NOREWIND, NOUNLOAD, STATS = 10"; 
int path= _dbContext.Database.ExecuteSqlCommand(System.Data.Entity.TransactionalBehavior.DoNotEnsureTransaction, string.Format(sqlCommand, dbname , dbBackUp));