Poor colleges education

cmd12.CommandText = "INSERT INTO NormalTransaction(RegNo,Name,MemType,Departmen
t,BarCodeNo,Title,Author,AccNo,BookType,CallNo,[Subject],IssueDate,DueDate) VALU
ES (@a1,@a2,@a3,@a4,@a5,@a6,@a7,@a8,@a9,@a10,@a11,@a12,@a13)"
cmd12.Parameters.AddWithValue("@a1", txt_RegisterNo.Text)
cmd12.Parameters.AddWithValue("@a2", txt_Name.Text)
cmd12.Parameters.AddWithValue("@a3", txt_MemberType.Text)
cmd12.Parameters.AddWithValue("@a4", txt_Department.Text)
cmd12.Parameters.AddWithValue("@a5", Int32.Parse(txt_BarcodeNo.T
ext))
cmd12.Parameters.AddWithValue("@a6", txt_Title.Text)
cmd12.Parameters.AddWithValue("@a7", txt_Author.Text)
cmd12.Parameters.AddWithValue("@a8", txt_Accession.Text)
cmd12.Parameters.AddWithValue("@a9", txt_BookType.Text)
cmd12.Parameters.AddWithValue("@a10", txt_CallNo.Text)
cmd12.Parameters.AddWithValue("@a11", txt_Subject.Text)
cmd12.Parameters.AddWithValue("@a12", DateTimePicker1.Value)
cmd12.Parameters.AddWithValue("@a13", DateTimePicker2.Value)