這個問題困惑我好長的時間,在網上搜,也沒完全的解決方案,不是過於簡單,就是亂說,有的論壇上還沒人回答這個問題.今天我徹底解決這個問題,並在C#裡測試完全通過.現在把他寫出來,希望對朋友們有協助(如要轉載,記得給我著作權哦.嘿嘿!!!).以下資訊是綜合網上的資料和我的實際問題,整理出來的.
備份:
在備份按鈕裡寫:
複製代碼 代碼如下:protected void Button1_Click(object sender, EventArgs e)
{
string path = "e:\\MAZDatabase Backup\\" + Menu+ ".bak";
if (File.Exists(path))
{
File.Delete(path);//注意,這個步驟很重要,如果重複,在備份的資料,就會變成,
//你剛開始的資料,所以每次都要先刪除.
}
if (!File.Exists(path))
{
FileStream fs = File.Create(path);
fs.Close();
}
string backupstr="backup database Test to disk='"+path+"';";
SqlConnection con = new SqlConnection("server=localhost;database=Menu;uid=sa;pwd=sa;");
SqlCommand cmd = new SqlCommand(backupstr, con);
try
{
con.Open();
cmd.ExecuteNonQuery();
MessageBox.Show("備份成功!");
connection.Close();
}
catch (Exception ex)
{
string stringError = ex.ToString();
MessageBox.Show("備份失敗!");
connection.Close();
}
}
還原:
在還原按鈕裡寫:複製代碼 代碼如下:protected void Button2_Click(object sender, EventArgs e)
{
string path = "e:\\MAZDatabase Backup\\" + Menu+ ".bak";
string connectionStringTest = "server=localhost ;database=master;uid=sa;pwd=sa";
SqlConnection connection = new SqlConnection(connectionStringTest);
string backupstr = "restore database Menu from disk='" + path + "';";
try
{
string sql = "exec killspid '" + Menu+ "'";//這個很關鍵,要不然就出現題目上的錯誤了
SqlCommand cmd = new SqlCommand(sql, connection);
connection.Open();
cmd.ExecuteNonQuery();
cmd = new SqlCommand(backupstr, connection);
cmd.ExecuteNonQuery();
MessageBox.Show("恢複成功!");
connection.Close();
}
catch (Exception ex)
{
string stringError = ex.ToString();
MessageBox.Show("恢複失敗!");
connection.Close();
}
}
預存程序 killspid 複製代碼 代碼如下:create proc killspid (@dbname varchar(20))
as
begin
declare @sql nvarchar(500)
declare @spid int
set @sql='declare getspid cursor for
select spid from sysprocesses where dbid=db_id('''+@dbname+''')'
exec (@sql)
open getspid
fetch next from getspid into @spid
while @@fetch_status <>-1
begin
exec('kill') +@spid
fetch next from getspid into @spid
end
close getspid
deallocate getspid
end