本文数据库的名称为ProjectControl
public static SqlConnection conn = new SqlConnection("server=(local);uid=sa;pwd=000;database=ProjectControl");
//备份
public bool BackUpDataBase(string databasefile)
{
if (!File.Exists(databasefile))
{
}
//还原的数据库MyDataBase
string sql = "BACKUP DATABASE " + "ProjectControl" + " TO DISK = '" + databasefile + ".bak' ";
conn.Open();
SqlCommand comm = new SqlCommand(sql, conn);
comm.CommandType = CommandType.Text;
try
{
comm.ExecuteNonQuery();
}
catch (Exception err)
{
string str = err.Message;
MessageBox.Show(str);
conn.Close();
return false;
}
MessageBox.Show("备份成功");
conn.Close();//关闭数据库连接
return true;
}
//还原
public string RestoreDatabase(string backfile)
{
///杀死原来所有的数据库连接进程
SqlConnection conn = new SqlConnection();
conn.ConnectionString = "Data Source=.;Initial Catalog=master;User ID=sa;pwd =000";
conn.Open();
string sql = "SELECT spid FROM sysprocesses ,sysdatabases WHERE sysprocesses.dbid=sysdatabases.dbid AND sysdatabases.Name='" +
"ProjectControl" + "'";
SqlCommand cmd1 = new SqlCommand(sql, conn);
SqlDataReader dr;
ArrayList list = new ArrayList();
try
{
dr = cmd1.ExecuteReader();
while (dr.Read())
{
list.Add(dr.GetInt16(0));
}
dr.Close();
}
catch (SqlException eee)
{
MessageBox.Show(eee.ToString());
}
finally
{
conn.Close();
}
//MessageBox.Show(list.Count.ToString());
for (int i = 0; i < list.Count; i++)
{
conn.Open();
cmd1 = new SqlCommand(string.Format("KILL {0}", list[i].ToString()), conn);
cmd1.ExecuteNonQuery();
conn.Close();
//MessageBox.Show("系统已经清除的数据库线程： " + list[i].ToString() + "\r\n正在还原数据库！");
}
//这里一定要是master数据库，而不能是要还原的数据库，因为这样便变成了有其它进程
//占用了数据库。
string constr = @"Data Source=.;Initial Catalog=master;User ID=sa;pwd =tc0001";
string database = "ProjectControl";
string path = backfile;
string BACKUP = String.Format("RESTORE DATABASE {0} FROM DISK = '{1}' WITH REPLACE", database, path);
SqlConnection con = new SqlConnection(constr);
SqlCommand cmd = new SqlCommand(BACKUP, con);
con.Open();
try
{
cmd.ExecuteNonQuery();
MessageBox.Show("还原成功,点击退出系统！");
Application.Exit();
}
catch (SqlException ee)
{
//throw(ee);
//MessageBox.Show("还原失败");
MessageBox.Show(ee.ToString());
}
finally
{
con.Close();
}
return "成功与否字符串";
}