调用sql语句实现SqlServer的备份和还原
2014-11-03来源:

调用sql语句实现SqlServer的备份还原,包括完整备份和差异备份,因为执行备份还原需要一定的时间,因此需要设定 CommandTimeout参数。

/// <summary>

/// 备份数据库 调用SQL语句

/// </summary>

/// <param name="strFileName">备份文件名</param>

/// <param name="BackUpType">0表示完整备份,为1表示差异备份</param>

/// <returns></returns>

public bool BackUPDB(string strFileName, int BackUpType)

{

//如果是差异备份,就是看一下文件是否存在,如果不存在,就不执行

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();//数据库名称

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("备份{0}数据库失败", BackUpType == 0 ? "完整" : "差异"), ex);

// System.Diagnostics.Debug.WriteLine(string.Format("备份{0}数据库失败", BackUpType == 0 ? "完整" : "差异"));

result = false;

}

finally

{

if (result == true)

{

string str_InfoContent = string.Format("备份{0}数据库成功", BackUpType == 0 ? "完整" : "差异");

// System.Diagnostics.Debug.WriteLine(str_InfoContent);

}

}

return result;

}

/// <summary>

/// 还原数据库 使用Sql语句

/// </summary>

/// <param name="strDbName">数据库名</param>

/// <param name="strFileName">备份文件名</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();//数据库名称

#region 关闭所有访问数据库的进程,否则会导致数据库还原失败 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("还原数据库失败rn" + ex.Message, "系统提示!", MessageBoxButtons.OK, MessageBoxIcon.Warning);

Common.Log.WriteLog(string.Format("还原数据库失败--{0}", DateTime.Now.ToString()), ex);

result = false;

}

finally

{

//恢复成功后需要重启程序

if (result)

{

//

}

}

return result;

}

/// <summary>

/// 执行一条SQL语句

/// </summary>

/// <param name="SQLStringList">sql语句</param>

/// <param name="SetTimeout"> 等待连接打开的时间(以秒为单位)。 默认值为 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;

}

}

}

}

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