请帮忙看看这个添加数据库哪里出错了，我怎么也找不到问题！

OleDbConnection connection = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + System.Windows.Forms.Application.StartupPath + "\\dwee.mdb");
connection.Open();
string strSQL = "INSERT INTO send(Number,Sendinfo) VALUES('"+ Number +"','"+Sendinfo+"')";
OleDbCommand command=new OleDbCommand(strSQL,connection);
command.ExecuteNonQuery();
Number 和Sendinfo都是字符串