INSERT INTO 语句的语法错误。

private void button1_Click(object sender, EventArgs e)
        {
            OleDbConnection aConnection = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Application.StartupPath + "/" + "DB.mdb");
            aConnection.Open();
            string strName;
            strName = "insert into user(name,password,qx) values('" + textBox1.Text + "','" + textBox2.Text + "','" + textBox3.Text + "')";
            if (textBox1.Text == "" | textBox2.Text == "" | textBox3.Text == "")
            {
                MessageBox.Show("请填写要添加的数据");
                return;
            }
            OleDbCommand cmd = new OleDbCommand(strName, aConnection);
            cmd.ExecuteNonQuery(); //如果需要提示成功与否，就把本行注释，下面的解除注释
            //int flag=cmd.ExecuteNonQuery();
            //if (flag > 0)
            //{
            //    MessageBox.Show("增加成功");
            //}
            //else
            //{
            //    MessageBox.Show("增加失败");
            //}
        }