調用sql語句實現SqlServer的備份還原,包括完整備份和差異備份,因為執行備份還原需要一定的時間,因此需要設定 CommandTimeout參數。
/// <summary>
/// 備份數據庫 調用SQL語句
/// </summary>
/// <param name="strFileName">備份文件名</param>
/// <param name="BackUpType">0表示完整備份,為1表示差異備份</param>
/// <returns></returns>
public bool BackUPDB(string strFileName, int BackUpType)
{
//如果是差異備份,就是看一下文件是否存在,如果不存在,就不執行
if (BackUpType == 1 && File.Exists(strFileName) == false)
{
return false;
}
bool result = false;
try
{
string[] strConnSqlArr = strConnSql.Split(';');
string DBName = strConnSqlArr[4].ToString()。Split('=')[1].ToString();//數據庫名稱
string backUp_full = string.Format("backup database {0} to disk = '{1}' ;", DBName, strFileName);
string backUp_Diff = string.Format("backup database {0} to disk='{1}' WITH DIFFERENTIAL ;", DBName, strFileName);
WKK.DBUtility.DbHelperSQL.ExecuteSql(BackUpType == 0 ? backUp_full : backUp_Diff, 600);
result = true;
}
catch (Exception ex)
{
Common.Log.WriteLog(string.Format("備份{0}數據庫失敗", BackUpType == 0 ? "完整" : "差異"), ex);
// System.Diagnostics.Debug.WriteLine(string.Format("備份{0}數據庫失敗", BackUpType == 0 ? "完整" : "差異"));
result = false;
}
finally
{
if (result == true)
{
string str_InfoContent = string.Format("備份{0}數據庫成功", BackUpType == 0 ? "完整" : "差異");
// System.Diagnostics.Debug.WriteLine(str_InfoContent);
}
}
return result;
}
/// <summary>
/// 還原數據庫 使用Sql語句
/// </summary>
/// <param name="strDbName">數據庫名</param>
/// <param name="strFileName">備份文件名</param>
public bool RestoreDB(string strDbName, string strFileName)
{
bool result = false;
try
{
string strConnSql = ConfigurationSettings.AppSettings["ConnectionString"].ToString();
string[] strConnSqlArr = strConnSql.Split(';');
string DBName = strConnSqlArr[4].ToString()。Split('=')[1].ToString();//數據庫名稱
#region 關閉所有訪問數據庫的進程,否則會導致數據庫還原失敗 闫二永 17:39 2014/3/19
string cmdText = String.Format("EXEC sp_KillThread @dbname='{0}'", DBName);
WKK.DBUtility.DbHelperSQL.connectionString = strConnSql.Replace(DBName, "master");
WKK.DBUtility.DbHelperSQL.ExecuteSql(cmdText);
#endregion
string Restore = string.Format("RESTORE DATABASE {0} FROM DISK='{1}'WITH replace", DBName, strFileName);
WKK.DBUtility.DbHelperSQL.ExecuteSql(Restore, 600);
result = true;
}
catch (Exception ex)
{
MessageBox.Show("還原數據庫失敗rn" + ex.Message, "系統提示!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
Common.Log.WriteLog(string.Format("還原數據庫失敗--{0}", DateTime.Now.ToString()), ex);
result = false;
}
finally
{
//恢復成功後需要重啟程序
if (result)
{
//
}
}
return result;
}
/// <summary>
/// 執行一條SQL語句
/// </summary>
/// <param name="SQLStringList">sql語句</param>
/// <param name="SetTimeout"> 等待連接打開的時間(以秒為單位)。 默認值為 15 秒。 </param>
/// <returns></returns>
public static int ExecuteSql(string SQLString, int setTimeOut)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
using (SqlCommand cmd = new SqlCommand(SQLString, connection))
{
try
{
connection.Open();
cmd.CommandTimeout = setTimeOut;
int rows = cmd.ExecuteNonQuery();
connection.Close();
return rows;
}
catch (System.Data.SqlClient.SqlException e)
{
connection.Close();
throw e;
}
}
}
}