ServerVersion = “sqlConn.ServerVersion”引发了“System.InvalidOperationException”类型的异常

publicstaticintExecuteQuantity(stringsql,int? timeOut,params SqlParameter[] parameters)

{

using(SqlConnection sqlConn =new SqlConnection())

{

using(SqlCommand cmd =new SqlCommand(sql, sqlConn))

{

try {

sqlConn.Open();

if(timeOut !=null)

cmd.CommandTimeout = (int)timeOut;

foreach(SqlParameter parameterin parameters)

{

if(parameter.Value !=null)

{

cmd.Parameters.Add(parameter);

}

}

return cmd.ExecuteNonQuery();

}

catch (SqlException ex)

{

throw ex;

}

finally {

cmd.Parameters.Clear();

sqlConn.Close();

}

}

}

}

参数sql为：

USE [master];BACKUP DATABASE TO DISK ='D:\云迈项目\FAMS_MVC_1.0.0\FAMS.Web\DBBak\20130315143438.bak'WITH INIT;

请问大侠看看我写的哪里错了，就是报那个错呢？！

ServerVersion = “sqlConn.ServerVersion”引发了“System.InvalidOperationException”类型的异常