异常详细信息: System.Data.OleDb.OleDbException: INSERT INTO 语句的语法错误。

string s1 = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Library.mdb;Persist Security Info=True";
            string s2 = "select ReaderNo from [Readerinfo] where ReaderNo='" + TextID.Text + "'";
            OleDbConnection conn = new OleDbConnection(s1);
            conn.Open();
            OleDbCommand cmd = new OleDbCommand(s2, conn);
            OleDbDataReader dr = cmd.ExecuteReader();
            if (dr.HasRows)
            {
                while (dr.Read())
                {
                    string strreaderno = dr["ReaderNo"].ToString().Trim();
                    if (this.TextID.Text == strreaderno)
                    {
                        MessageBox.Show("该用户编号已经存在！");
                        this.TextID.Text = "";
                        this.TextauPs.Text = "";
                        this.TextID.Focus();
                    }
                }
            }
            else if (this.TextauPs.Text =="") return;
            else
            {
                conn.Close();
                conn.Open();
                cmd.CommandText = "insert into [Readerinfo](ReaderNo,ReaderName,Sex,Password,Address,ReaderPhone,ReaderEmal,IssueTag,IssueTagUsed,ReaderType,iDate) values('" + TextID.Text + "','" + TextName.Text + "','" + comboBox1.Text + "','" + TextauPs.Text + "','" + TextauAddress.Text + "','" + textBoxPh.Text + "','" + TextEmail.Text + "','" + textBoxMaxbook.Text + "','" + textBoxBorbook.Text + "','" + comboBoxleib.Text + "','" + TextaddDate.Text + "')";
                cmd.Connection = conn;
                cmd.ExecuteNonQuery();
                MessageBox.Show("注册成功！");
                this.Close();
            }
            conn.Close();
        }

--------------------编程问答-------------------- 谢谢来看本帖的好心朋友我已经解决这个问题咯  o(∩_∩)o... --------------------编程问答--------------------
sql语句错误。设置断点检查语句执行情况。

也有可能文本录入有注入字符  最常见就是单撇号  '

补充：.NET技术 ,  ASP.NET