DataSource Controls :: SQL And Chinese / When Try To Retive That Value Need To N Before The Parameter?

I have chinese charters stored in a cocloumn . Whn i try to retive that value i need to N before the parameter . How will i give that.

My cose is as follows

String sQuery = "SELECT * FROM " + T_SMS + " " ;
sQuery += "WHERE " +F_ID_SMS + " = @" + F_ID_SMS + " AND " + F_KEY + " = @" + F_KEY;
try
{
SqlCommand myCommand = new SqlCommand(sQuery,this.cConnection) ;
SqlParameter[] arrParameters = this.makeSQLParametersUK() ;
for(int i = 0 ; i < arrParameters.Length ; i ++)
{
myCommand.Parameters.Add(arrParameters[i]) ;
}
if (this.isTransactionAvailable())
myCommand.Transaction=this.cTxn;
SqlDataReader myDataReader = myCommand.ExecuteReader() ;
while(myDataReader.Read())
{
///seting the values
}
myDataReader.Close() ;
}
catch(SqlException e)
{
throw e ;
}

and my makeSQLParametersUK code is as follows
SqlParameter[] arrSqlParameter = new SqlParameter[3] ;
try
{
arrSqlParameter[0] = new SqlParameter("@" + F_ID_SMS,this.getIdSmsNumCorto()) ;
arrSqlParameter[0].IsNullable = false ;
arrSqlParameter[1] = new SqlParameter("@" + F_KEY, this.getKey() +"'") ;
arrSqlParameter[1].IsNullable = false ;
}
catch(Exception ex)
{
}