visual studio 2010 - Alternate solution of Microsoft.Jet.OLEDB.4.0 provider for x64 bit version -

i saving values access database , used microsoft.jet.oledb.4.0 provider , have configure platform mode cpu x86 in project in visual studio , works fine x86 platform when start unit testing using nunit not accepting x86 platform , nunit shows error

"unittest_finance.test.class1.insertcashpayment: system.invalidoperationexception : 'microsoft.jet.oledb.4.0' provider not registered on local machine."

now want alternative way handle error while performing unit testing using nunit.

here code reference

class repairdll     {         string dbconn = "provider=microsoft.jet.oledb.4.0;data source=c:/autorepairdb.mdb";           //method booking value         public virtual bool insert_data_repair_history(entityclass ec)         {             bool isinsert = false;              //connect database             oledbconnection connection = new oledbconnection(dbconn);             connection.open();              try             {                 //insert customer value                 string sql = "insert [repair_history] (firstname,lastname,city,state,vehicleno,lienseno,repairdate,summary,charge) "                               + "values ('" + ec.r_firstname + "','" + ec.r_lastname + "','" + ec.r_city + "','" + ec.r_state + "','" + ec.r_vehicleno + "','" + ec.r_licenseno + "','" + ec.r_date + "','" + ec.r_summary + "','" + ec.r_charge + "')";                 oledbcommand command = new oledbcommand(sql, connection);                 command.executenonquery();                 connection.close();                  isinsert = true;             }             catch             {                 throw new exception();              }                         {                 // close connection                 if (connection != null)                 {                     connection.close();                 }             }              return isinsert;         }     } 

there no 64-bit version of jet database engine, 64-bit applications have use 64-bit version of access database engine (ace), , invoke this

provider=microsoft.ace.oledb.12.0; 

there 32-bit version of ace, applications use ace work in both 32-bit , 64-bit environments. note jet deprecated new applications.