I got a situation where I need to update the details of an order. So there is an order, and there are many products in that order, and the way I am updating that bit at the moment is simply 'delete and save'. But what happens is that it deletes first and them saves products which would be fair enough but if anything in save function goes wrong the order leaves with no products. So how would I know if I will get an error?
View 1 RepliesWhat I am trying to do is have a class where the functions of the same name are both instance functions and shared functions.
Public Shared Function Get...(byval xx as xx)
and
Public Function Get...
The Public Function uses a Property xx created in the constructor, whereas the Shared Function has the parameters (byval xx as xx).
I am making some kind of calendar where I can add tasks, so I can easily organise my tasks. For it to complete, I have 3 things I can't figure out how to do it:
1. When I launch the program, I want the items in my listbox to be sorted alphabeticly.
2. I want to save the items in the listbox, so if I close the program and reopen it the items are still saved in the listbox.
3. The items in the listbox all start with a date, fe. "13-4" for today. If that date already passed I want that item to be deleted.
Code:
Dim cn As New ADODB.Connection()
cn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:BackupEon of LightEon Of Light.mdb"
[code]....
' This code not Working :('Error Messege in md.Save()
I am using MS Access 2007 as database and VB 2008 to build an application to show the content of 2 tables as a single table.I have two tables in MS Access and i have linked both the tables using "ID" as primary key(1st Table),foreign key(2nd Table). I used Query Wizard to show the data of both tables in a single table(3rd Table).I am able to view the content of all 3 tables using datagridview in vb 2008(Using Code), but i am unable to add,delete,save and search the content of the table using code. My concern is,i will be able to do all these operations using codes only.Would you please help me out in this.
View 5 RepliesWhen I create a new data, key-ing in all details and for date as well. So when I click on the button Edit. Yes I can perform the edit function, I can edit everything. Then, once I click on Save, yes it Saved. But problem here in the date all goes back "1900-01-01".
View 5 RepliesComing across a curious problem... I'm using a SQLCE database. In thebindingnavigatorsaveitem I have the generated code.. the validate, bindingsource.endedit, and the tableadaptermanager.updateall.Here's what I'm doing. I create a record and then click save. Then I decided to delete the record. When I try to save it again, I get an error - "System.Data.DBConcurrencyException: Concurrency violation: the DeleteCommand affected 0 of the expected
View 8 RepliesOn my add button i still have to add codes that disables my navigation buttons and and my search button... and add codes that will enable them in save button... im still new thats why my codes are just simple if, else if, else conditions that just manipulates enable, visible, text, properties..also if i search my data will be search but my textboxes only shows the searched data.. i still have to add button that will only be visible if the program finds a data... and this button function is to remove the filter..rather than disabling some functions i want a messagebox to prompt the user that this functions arent functionable...
Look at my codes... i find it lame... its kinda irritating always just using True and false..
Public Class moviesForm
Private Sub moviesForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[CODE]...
I'm reading data from Excel and processing the file line by line.
If the process succeeds then I need to delete that row from Excel and save it. If it fails, then continue with the next line and so on.
Initially I used OLEDB to read data from Excel, but by using this I cannot delete rows.
I think we can solve this by using COM component.
I've got a binding navigater but i can't save and delete records i am using sql how can i get it to work. i can sroll throught the records. This is my code so far.
[Code]...
In One of my form i have a EmpBindingNavigator which allows me to save, delete and modify.
View 5 Repliesi going to add, update and delete records on xsd file (i got this xsd file through Data Sources Tab, i add new data source my VG.mdb)
View 7 RepliesI have a bound combo box with employee profile names. I have two buttons: save and delete buttons.When I edit a selected profile, I hit save and automatically the change is reflected in the bound combo box, but when I hit delete or create new profile, I have to close the app and when I open it I see the changes in the bound combo box.The combobox.Refresh() no workThis is my code:
Private Sub deleteselectedprofile_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_deleteprofile_oninsideprofiledittap1.Click
Dim mconn As New SqlConnection("Data Source=(local);Initial Catalog=epmapp_db;Integrated
[code].....
I have a BindingNavigator1 binding to a datasoure. In default, we can add,delete, save data with BindingNavigator1 control. i want to know : how can i write more code to event click of "delete" button(or add , save button) in BindingNavigator1.
Example : i mean i want show messagebox yesno before delete operation is performed.
if result = yes then delete. i tried this but not yet :
[Code]...
I have a main form (Form 1) with a menu strip and navigation bar. I use the main form to launch other forms (Form 2) as children of the main form.
All of the children forms contain SQL data sets /grids. I would like (if possible) to use the save button on the main form, to save data changes of the children form to the SQL database.
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
[Code]...
i m using fallowing code for update, delete and save data it's working very well when i save new recored but when i update and delete recored it's showing error message "Dynamic SQL generation for the DeleteCommand is not supported against a SelectCommand that does not return any key column information."
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If thismode = 0 Then
row = ds.Tables("state").NewRow()
row.Item("state") = TextBox1.Text
[code].....
When i click on ADD it changes to SAVE and disables other buttons DELETE UPDATE SEARCH.When i click on SAVE and if texboxes are empty it brings an error,when i click search and i want to cancel the search from the inputbox it brings another error i also want to add cancel button or refresh button.How can i make this project to run well. WHere did i go wrong
[Code]...
I'mvery new to VB2008 and have basically no idea regarding much of coding. I have attached a copy of my form. Basically, I have a db named "employee.mdb" with table "Employee". It has 3 fields Name, Dept and Designation. I want to connect my db with the form and want the following functions (when the respective buttons are clicked)Add: Add a new record to the db and save it without overwriting an existing record.Delete: Delete the selected record from the dbSave: Save all details<<: Move to the previous record>>: Move to the next record. I hope I have explained myself clearly
View 2 RepliesI am doing a project on creating a database using vb.net. I need to be able to add records, save, delete and retrieve these data. I am a beginner so far I have created the design I need to be able to link many forms such as order form, find customers, add customers etc. How do i go about this.
View 2 Repliessave, edit and delete files in the data grid.
View 1 Repliesi found in internet, many examples are regarding insert only one image. but now i want it to have multiple uploaded images that we can delete and view it first before we save it on database. how to store the images uploaded?
View 3 RepliesI need to be able to save, edit, and delete records in an access database through vb2008. Editing and deleting records works perfect, but I cannot save new records. Can anyone assist?
Here is my code
Imports System.Data.OleDb
Public Class Main_Form
Dim con As OleDbConnection
Dim cmd As OleDbCommand
[code].....
1) Is it possible to access the Excel mathematical functions without actually opening Excel?
I was thinking of through a DLL WinAPI call or maybe a delegate function or smaller program?
2) Does anyone know of a MS link or area that gives instruction on "how to" use every function of every Windows DLL at all?
Or for all those that Microsoft have chosen to document online at least.
i'm making a webbrowser, curectly in version 2. 6. But i need some codes before i can release it.
-Source Code
-Save page as
-Delete Cookies
And if you know some more properties for the webbrowser, like options.
How can be find out which file is going to delete when, user provides command like DELETE or SHIFT + DELETE or by programmatically gives DELETE command. Well I know about FileSystemWatcher Class, but this class doesn't provide information before delete...
View 1 RepliesI used to develop applications in VBA, but now I'm using SQL Server 2008 Integration Services for a lot of the functionality, and using VB.NET as the scripting language where needed - all of which are new to me. I need to do the same string manipulation in several different SSIS tasks. With VBA, I'd simply write a function and declare it Public, and I could use it from any module. E.g.
Public Function MakeId(ByVal Country As String, ByVal Postcode As String) As String
....
End Function
' later...
Dim MyId as String
MyId = MakeId(County, Postcode)
But when I do that in a Script Task or Script Component, I find I can't call the function from VB in any other Script Task or Component; it says MakeId is undeclared. It works within its own 'box', but not from anywhere else.
I am using Visual Studio 2008 to try and create a calculator program that can convert binary to decimal. I have some code but I'm having problems figuring out what to write as an "argument" when I was to call the function.
Here is the code I have so far.
Public Class Form1
Private Sub btnCalculate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculate.Click
[Code]....
I am trying to pass multiple signature calls to an overloaded function. My understanding is that VB can recognize the different signatures and use the appropriate function.[code]...
View 2 Replieshow to use Right and Left Functions in VB.NET 2008?
View 1 Replies