Record Deletion - Customer And Booking Data Sets On My Form
Mar 15, 2012
I have a customer and booking data sets on my form. customer id is a foreign key in booking table .but when i click delete button. it gives me an error: The DELETE statement conflicted with the REFERENCE constraint "FK_Booking_Customer". The conflict occurred in database "photoshoot", table "dbo.Booking", column 'Cust_id'. The statement has been terminated. Its a one to many relation between customer and booking. one customer can make many bookings each booking will belong to only 1 customer.
View 1 Replies
ADVERTISEMENT
Jun 22, 2010
I have created a hotel booking system programme. However, I am puzzled as to how when the booking button is clicked it can search a database and find the best suited room (RoomType) and make sure that it is available (Date of Departure < system.date).
This data is held in two tables (Access):
Booking:
BookingID (Primary Key)
CustomerID (Foreign Key, Table:Customer)
Date of Arrival (Date)
Date of Departure (Date)
RoomID (Foreign Key,Table:Room) Room:
RoomID (Primary Key)
RoomType (Text)
RoomPrice (Currency)
Floor (Number)
This has all got to be done within a single button click. Any ideas as to how I can place this into my vb code?
I have a rough query for picking a room that is best suited:
Code:
SELECT roomID
FROM Room INNER JOIN Booking ON Room.RoomID = Booking.RoomID
WHERE Room.[Room Type] LIKE '" & Room_TypeTextbox.Text & "'"
AND Booking.[Date of Departure] < Now()
I have been trying for a while to get it to select a single matching record as there is a high chance that this query will return multiple records but im unsure on how to deal with that.
View 16 Replies
Jan 13, 2011
I have the following code to delete a row in an Access Database Table. It executes with no errors, but the row is not deleted.
Dim adpMasterRecipe As OleDb.OleDbDataAdapter
Dim dsMasterRecipe As New System.Data.DataSet
Dim iIndex As Integer
[code].....
View 1 Replies
Jan 13, 2011
I have the following code to delete a row in an Access Database Table. It executes with no errors, but the row is not deleted.
Dim adpMasterRecipe As OleDb.OleDbDataAdapter
Dim dsMasterRecipe As New System.Data.DataSet
Dim iIndex As Integer
[Code]....
View 3 Replies
Nov 20, 2011
I working on a program that I am trying to create a customer data form.Along with the form I have their vehicles related to that record.Now I have setup a dataset in the form.I am pulling data from the database, however when I enter a new record on the customer part the customerID is in the running order, everything seems to be working on in this table.But when I create a vehicle for this customer I have a running vehicle id.Example: I have in the database 4 customers.IDs 1,2,3,4 customer 1 has vehicle ID1,2.customer 5 has a car there 1st car but the database gives is a ID of 3.I want this customer to ID 1 for car one.My problem might be because it was set in the database as Unique Identifier.Maybe I should make the license plate the unique identifier.
View 4 Replies
Oct 26, 2010
create website involving payments plus some data entry eg booking of some facilities with the main data kept at a LAN window system.
View 4 Replies
Nov 27, 2010
im currently designing a system that enables the user to input a customer record. the customer record is broken down into 11 fields: customer id, title, forename, surname, house no, town, city, county, postal code, contact number, date of registration. Problems - i need to be able to insert the new record into a file and for them to be organized into surname order (for a binary search to work) at this moment it will only sort by first field (which is unnecessary as the customer id number is generated automatically and is all ready created in order). Also, im having trouble with sorting the array that contains all the variables from the text file.
[Code]...
View 3 Replies
Aug 2, 2009
I have a program that simply checks if the account number and pass word match. And if not it allows you to create it. But i have no idea on how to create something that will hold the data and will allow the user to add and remove sets of data.
View 1 Replies
Apr 14, 2009
I'm lending a copy of my .exe on a memory stick and because I dont completely trust them, , I would like to build in a function that as soon as my app has finished doing what its doing And the big red X is hit it will delete itself, but my problem is that i cant put the deletetion in the form closing because the prog is still running, so what should I do? Is there a way that I can get the app to close as soon as the dedicated task is complete, It will remove itself from the memory stick but if the X is hit before the process is complete the then the prog will remain.
View 14 Replies
Oct 4, 2011
I have the following problem: I select a customer from a dropdownlist and then the gridview should load all items of all orders of that customer. I have the following query:
Dim allorders = From ord In db.Orders
Where ord.CustomerID = Convert.ToInt32(CustomerDropDownList.SelectedValue)
[CODE]..............
I also tried to modify the query as follows:
Dim orderitems = From oi In db.OrderItems
Where oi.OrderNumber = (From From ord In db.Orders
[CODE]...........
But this does not work. I just started using LINQ.
View 5 Replies
Oct 5, 2011
A registeration sys using a Microsoft acres database I have a table named customer info to store customer details when registering and I need coding that will add the following to my table customer I'd , firstname, lastname , phonenumber and user also has to make selection between radio buttons male or female.
View 2 Replies
Apr 19, 2011
I have a basic application that allows pre-defined users to use the application.The Username & passwords along with some other basic user info is stored in a simple access dbIn my application I want a user to login, Username & PasswordI create a connection string, a data adapter and a dataset, I then need to validate the password the user has entered.Would it be best to query the access db directly, or the dataset?
View 5 Replies
Mar 26, 2012
I need to link different arrays of data that I am gathering from different Select Cases.For Example:Araray A, B and C from Case 1Array C, D and F from Case 2 Note: Array C is common between two cases.I know in C++ I could have used Pointers and use SQL in Java.
View 1 Replies
May 26, 2009
i just want to ask how can i trap the deletion message appears whenever i delete one item in may data entry? im using vb2008 and sql as my database.i know the code in access. does anyone know its counterpart in vb2008? here's the code in Access 2003acDataErrContinue
View 1 Replies
Jan 5, 2010
I am trying to autocomplete customer surnames direct from the Customer Datatable, using the code below which I got from another thread, but nothing is happening.
[Code]...
View 6 Replies
Feb 5, 2009
I collect two sets of data from two different databases, This data is now in two collections. I then join/append the one collection to the other and then put it in to a list view.I really would like to order this list view by the first column without the click event.To make this even harder the First column contains Data that is DateTime and i have found that it orders the items by the day number and not the months or years or time.I have found one way but it then cause's me further agony when doing some checks upon the data within the listview later in my code. This answer is to rearrange the format to "yyyy-MM-dd HH:mm:SS" then using the listview.sorting = sortorder.
View 7 Replies
Nov 12, 2009
I have only 2 sets of "fixed" numbers used, that I need to be able to toggle between. Particularly, for array sizes/for loops. Is it best to use "Collections" in VB.NET to accomplish this?
View 5 Replies
Jun 3, 2011
I have a regular expression that I use to grab data between two sets of id's for example:
<CLASSCOD>70</CLASSCOD>
The regular expression I use is:
(?<=<CLASSCOD>)(?:[^<]|<(?!/CLASSCOD))*
Which works in most case but when I have a single value like this
<CLASSCOD>N</CLASSCOD>
It says there are no matches.
The whole data string looks like this :
<STATUS>PRESOL</STATUS>
<DATE>0601</DATE>
<YEAR>11</YEAR>
<AGENCY>Department of the Interior</AGENCY>
<OFFICE>Bureau of Indian Affairs</OFFICE>
[Code] .....
View 2 Replies
Oct 17, 2011
I have a USB device which creates a Virtual Serial Port on Windows. I am using VB.Net to write and read from the port. My device responds with specific sized set of bytes, but I am finding that SerialPort.Read(byte-array,offset,number-bytes) does not return the full number-bytes but it also does not timeout or generate an exception. Repeated calls return additional fragments (up to 3 calls required). Python code using pySerial does not have the same problem.So, what am I doing wrong here? Am I expecting too much?
Some scenarios are:I write a command to the port and expect to get 4 bytes in response. I get 1 byte first and then 3 bytes on the subsequent call.I write a command and expect 21120 bytes in response. I get 1, 12671 and then 8448 bytes in 3 calls to read from the port.
Here are some excerpts from my code:
Private Sub SetupVirtualSerialPort()
Dim portName As String = "COM" + (m_DeviceContext * -1).ToString
Const baud As Int32 = 9600 '7680000
Const parity As Parity = parity.None
[code]....
View 2 Replies
Feb 16, 2012
I am a newbie at VB.net and would like for you to review my code in order to improve its performance.My objective is to append a bunch of ".csv" files into daily data sets. Within a directory I have about 2500 individual text file (.csv). Each file represents minute intraday stock market data for an individual stock covering 5 days or one week of data. This means that each symbol has 1950 string lines..Here is an example of what a string line looks like: "2011-06-27,10:07,48.15,48.15,48.02,48.02,25421". Not that is relevant but these represent Date, time,Open, High, Low, Close & Volume. Since I have 2500 files within a directory; doing some math, I am processing 2500*1950 = 4,875,000 lines. This process takes me about 16 hrs to run.[code]
View 7 Replies
Jun 17, 2009
i am getting error when updating existing record in vb.net here i am giving the update code please help me if any mistake please correct it for mee.[code]
View 3 Replies
Nov 2, 2009
In my sales order i use one combo that is CUSTOMER, actually it display all the data of CUSTOMER database.
at run time in SALES ORDER i saw that the CUSTOMERis not available in that combo then i want to add new customer there which save in my CUSTOMER data base WITH OUT LOSSING WHT EVER I INSERT IN SALES ORDER.
View 1 Replies
Oct 30, 2011
For some reason my code is not adding customer to the session. I am new to ASP.NET does anyone have any input as to why this is happening and maybe able to give some code example.
Below it the code.
Imports System.Data
Partial Class _Default
Inherits System.Web.UI.Page
[Code]....
View 1 Replies
Jan 26, 2011
I've done some research into this using the MSD website; I have found that my applicaiton saves the Customer Details to the Customer File, but only as (spaces). No data is present in the file.
I'm creating an application that saves Customer data to a file. Once the Data is saved into the file, how would i then get it from the file into a ListView?
[Code]...
View 3 Replies
Jun 10, 2011
This is the error when i try to execute my code "Procedure or function 'Get Customer data' expects parameter '@Name', which was not supplied."
objCommand.CommandType = CommandType.StoredProcedure
objCommand.CommandText = "GetCustomerData"
Dim ObjParam1 As New SqlParameter("@Name", SqlDbType.VarChar, 2000)
[Code].....
In debugging, i c the value in ObjParam1.value that I'm passing.
View 2 Replies
Dec 3, 2011
I use This Code To Save Data in Table First I delete record Then Insert record
View 4 Replies
Apr 1, 2009
I have created a project that has an add a new record, edit record and a search form, that has multiple text, combo boxes and is working great.Last nite I have added a checkbox under my add new record form and i am saving the checkbox value to my database, so far so good. I would like to be able to search any record that is mark with a checkbox to show up in my search screen when I do a search: [code] The problem that i am having is that now that I have added the code to my project to search for the checkbox field in the search screen and if I leave everything blank and click on the the search button I get no record found. I expected to see all that data, since I have nothing selected. Now if I click my checkbox, as soon as I click on my search button I see that two records that I have added for my test.
View 1 Replies
Apr 16, 2011
I have created a Bus Booking Website [URL]. I want to share the bus booking form with other sites so that they use our services.How can do I this using vb.net?
View 2 Replies
Aug 22, 2010
I am trying to put together a booking system. I have managed to program rates, discounts etc., and am now onto calculating the nights for the stay. On my form I have two datetimepickers, and a button. The code I have entered is: (I am using Visual Basic 2008 Express)
CODE:
This works well when getting how many nights between two dates in the same month, but if I enter say 30th August to 2th September, I get a -28. Is there a way to get the number of nights booked between two different months?
View 3 Replies
Oct 11, 2011
I am making a vb.net client application that works with a php based website where users can reserve a pc for themselves at a certain day and a certain time. I have made the application in such a way that upon logon, it queries the database and finds the person who booked pc at this time and compares the username to the person logged on. If it matches a welcome screen is showed with additional options. Else a window is shown which says "This PC is already booked. You will be logged of in 10 seconds".
The problem i am facing is, i have coded the close button to logoff since i dont want user to bypass this part, but yesterday i saw that if i close the app directly from taskbar (processes) it just closes.without logging him off.How can we code or is there anything we can do that, even if he closes the application through task bar there is still an instant log off?
View 6 Replies
