1. Web Application with Dataase
CS 3870/CS 5870: Note06
Prog3
Web Application with Dataase

2. AutoPostBack Control property Button Textbox Others Default: True
Default: False
Others
Should double check

3. Page Shopping
Property AutoPastBack of Textbox Must be True to fire Textchanged event (When focus leaves the textbox)

4. Textchanged Event of Textbox txtID
‘ Clear other textboxes id = txtID.Text.Trim Dim row as Data.DataRow row = SQLDataClass.tblProducts.Rows.Find(id) If row Is Nothing Then ‘ not found txtID.Focus() Else ‘ Found txtQuanity.Focus() End If

5. Textchanged Event of Textbox txtID
If row Is Nothing Then ‘ not found Session(“Prog3_ID”) = “” txtID.Focus() Else ‘ Found txtName.Text = row(1) price = row(2) txtPrice.Text = FormatCurrency(price) Session("Prog3_Price") = price Session("Prog3_ID") = id txtQuanity.Focus() End If

6. Textchanged Event of txtQuantity
If Session("Prog3_ID") = "" Then txtID.Focus() Exit Sub End If ‘ Otherwise, need to parse txtPrice or search database price = Session("Prog3_Price") subTotal = quanity * price tax = subTotal * grandTotal = subTotal + tax ‘ Display result

7. DBNull
‘ Page Updating ‘ Procedure DisplayRow ‘ finding the row txtID.Text = row(0) txtName.Text = row(1) txtPrice.Text = FormatCurrency(row(2)) // Description is not required If TypeOf (row(3)) Is DBNull Then txtDescription.Text = "" Else txtDescription.Text = row(3) End If ManageButtons()

8. Validating Input txtID txtQuantity No need to do it
Database will check it
txtQuantity
Validator
No Validator
Your choice
Prog3 of CS3870 does not use Validator

9. Grading
You will lose 15 points if page Default.aspx cannot access the database.
You will lose 10 points if page Updating.aspx or page Shopping.aspx cannot work correctly with the database.

10. Grading
You must follow the Programming Rules

11. Comment Block For code files only
Including Global.asax and SQLDataClass
Not for *.aspx or .master files

12. Programming Rules
Your Web pages should be the same as the sample pages.

13. Prog3 Global.asax Web.config <customErrors mode="Off"/>
<compilation debug=“true" targetFramework="4.5">
Price: reject 0
Quantity: accept 0

14. Test 1 50 points Tuesday (week 5), October 3 Lab 206 2:00 – 4:00
Based on Prog3

15. Test 1 Grading Cannot display records in GridView: -15
Cannot display individual records: -15
Formatting GridView: 5 points
Placing controls: 5 points
Checking input: 5 points
Help: -5