Display a Dialog Box that asks for some user input. Take that input and add a new entry to an access datatable. Refresh a List Box that displays the Keys from the datatable. Steps 1 and 2 work just fine. After the following method is executed (without closing the program) I can open the Access Database and the data has been stored to the datatable.[code]...
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I have a form where i can enter new product. In that same form i have listbox where i show the current product from the database.
I want to know how to update that listbox as i enter new product into the database so that user can see the current content of the product table.
my code to load the listbox
Try
Dim ds As New DataSet
Dim cmd As New OleDbCommand
[Code].....
To sum it up, what i want is something that will refresh the current display of the listbox so user can see the actual and updated contents of the database.
with the above code, the newly entered product/data can only be seen when the program is closed and reopened again. Which is not very convenient.
im trying to update the contents of a listbox by replacing the currently highlighted entry with a new value so far i have found the following to start off column1 is my listbox
[Code]...
but it keeps saying "Value cannot be null. Parameter name: value" for the first dim. how can i fix this? or this there another way to call the selected item without this complicated
I am trying to update a few entries in a access database through VB.NET. With the code I used below could anyone help me out and show me where I made a mistake because it is creating new database entries instead of updating them.
[Code]...
i connect database with vb.net and also i receive a single value from my receiver through serial port. now i want to match this single data with one field of database. i have attached my code.
Public Class Form1
Private Sub OPEN_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
I have two tables: HolidayRequests & HolidayEntitlementWithin the Holiday Requests I have 1 field:DaysWhen a staff member adds a holiday request it is stored as a number in the holiday requests table in days field (there are multiple requests with different days)
View 2 RepliesI have a VB.Net application that connects to a SQL Server database on my web host at GoDaddy. I'm wanting to use it for a chat program so that users can add messages to the database and then everyone else gets the new messages when it re-queries the database.
The only problem is that the only way to get the new messages is to re-query the database every # seconds.
Is there any way to have my program not re-query the database until an entry is added by another user?Would the SQL.SQLNotificationRequest be used for this?
I am creating a very simple Voting System, that will be use on electing new set of officer in a teacher cooperative...
So I have to create two separate program, a Server Program that will manage all the information in the election and a Client Program where voters will vote their selected candidate...
The election officers wanted that the Server Program will display the Voting Results at real time... So when the Voter finished voting, The Voting Result displayed by the Server Program will also be updated every time the Client Program Insert the data to Database....
An action listener in Server Program that will execute if new data is inserted in a Table in the Database made by the Client Program...
I trying to make a code to Delete and Update Access 2007 database after remove a selected item from a listbox in VB 2008. [using "Remove" button that i create] pervious i already make a button to View data from database and Remove from listbox. but i don't know how to delete and update in database.
The code i using now:
CODE:
In the database, i have ID,Name and Age (simple database)
I have a reporting utility for my users to view, send (via email), export SSRS reports. I have set up date parameter boxes with calendar drop down and they are able to send via email a URL link that would either display the report via ReportViewer or send a link via email (listbox of email addresses) that would let them view the report in Excel or PDF. This is working just fine. Now I just added a button for adding new email addresses and a new windows form with a textbox for entering the email address and a command button for Save Email Address. I am able to save the email address just fine from the small pop-up window for entering the email addresses but after closing the window, the listbox of email addresses on the main form does not get refreshed with the new entry from the textox even though the SQL table EmailAdresses got updated.[code]...
View 5 RepliesHere is something that I had in a VB6 program that worked great and was very fast. I'm trying to get it to work in VS 2005 but i am having no luck. I can'r get an answer from searching this forum or from MSDN. Here was the VB 6 Private Declare Function sendMessageByString& Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As String)
[Code]...
my chart loads data from a datagridview. how can i automatically update my chart with new data if new values are inserted into the datagridview.
[Code]...
I am working on DataEntry Forms in VB.NET There are two controls are having in a present window. One is Combobox and one is Textbox. Combobox values are Mobile, FAX, E-mail. By the mistake some one enter the values like , In the combobox-E-mail and in the Textbox-9987453434. Finally these are saved on the Database. But i want to Re Enter the values.
For this i was selected in the Combobox-Mobile and in the Textbox-9987453434. These are the right values i want to save on the database.
But here the problem is that Phone number column(Textbox) is Indexed. (Unique) or No Duplicates in the database. Now i want to update only one column which is coming from Combobox in the database.
I don't think this can be that hard but I just can't get my head on it. I have a connection to an Access DB, put three text boxes representing three columns in the DB. Using the DataNavigator everything works. But what I want is to be able to enter text in say textbox1 and have textbox2 and 3 update, like when using the navigator.
Add: I want this to function like when you enter a record number in the Navigator and hit Enter, bam, goes to that record and all the text boxes update. I want to enter a number in textbox1...
I have an application that receives data input from an automated set of devices. This data stream I have managed to capture & get it into a list box which I can sort based on the Device ID & the time that the response was received.There is a set time window for the devices to transmit their data into the application and during this each device is not limited to the number of responses it can send (ie :- Device 1 can send in 2 responses where Device 3 can send in 40 responses, etc).All of the responses are captured, listed & sorted within the listbox (this bit is working ).I now need to extract the last (ie:- latest) entry in the listbox for each Device ID & this is where I am stuck. I can retrieve the last item in the list but cant seem to extract the last item for each Device ID.The code that I am using for the Device response capture, etc is :-
*********Code Start
Private Sub btnPoll_Click(ByVal sender As System.Object, ByVal e As_ System.EventArgs) Handles btnPoll.Click
[code].....
I had a functioning datagridview that was created from VB2010's datasource by clicking on a table, picking datagridview and dragging to a form. I changed three of the columns of the grid to comboboxes bound to different tables. If I change a value in a column (not a combobox column which still shows the value from the original table), I receive InvalidOperationException was unhandled on Me.TableAdapterManager.UpdateAll(Me.MasterDataDataSet). What code do I need to add if I change columns to comboboxes?
View 4 Replies[code]....I have a dialog that comes up and asks for a reason for declining the business.I don't want the code to move on after not enabling the "me" until the reason has been entered and saved into the database. Also, at that point where it says "I WANT...." I want to copy the textbox fields into a new database and then delete this entry from the database, how can I do that. I am using VS 2008 and SQL.
View 2 RepliesI've been testing an application I'm working on in Windows 7, Vista and XP. If I'm using XP then I get a couple of solid black blocks after the items listed in the ListBox. They are absent when running the same application in Vista or 7. I have the enable application framework checkbox unchecked. I haven't tried changing that to see if it makes a difference.
View 7 RepliesI have a Datatable where i added data from textbox when i want to edit selected datatable rows from gridview to eidit these values will be showing in their respected fields but when i click update button the only first row in gridview will be updated either i select first row or any other row in gridview for editing whereas i want to update the selected rows data. NOTE: I was design datatable visually under vb.net 2008 designer and the datatable have not any primarykey i am using following code under btnupdate event
Dim i As Integer
StoreDBDataSet.Tables("DataTable1").Rows(i).Item("Code") = txtCode.Text
StoreDBDataSet.Tables("DataTable1").Rows(i).Item("Description") = txtDescription.Text
[code]....
I have a form that users record some event that is happening. They enter in what different things are occurring, for instance like a Basketball game. When certain events happen "steal", "score", "foul" these will get inputted to a listbox that records the whole game and is timestamped. However for these specific event i want them BOLD . So it would look something like
3:24 STEAL 3:25 #45 stole the ball, passed to #54
Or something like that. How do i get certain items to be bold?
i am using visual studio 2005.I have a few questions about listbox and openfiledialog, hoping to have some answers.I am creating a picture viewer, and so in my listbox I have put 3 defaults pictures, say namely 'X', 'Y', and 'Z'.Then there is this Insert button that allows user to insert new picture and added into the listbox.So here comes the questions:1. In the Insert button code below, I have made it such that whenever a picture is insert, it will displays out the picture in the picturebox and its name in the listbox. So how do I make the listbox to move its highlight to the newly insert picture?
Private Sub btnInsert_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnInsert.Click
OpenFileDialog1.FileName = ""
OpenFileDialog1.Filter = "JPEG | *.jpg"
If OpenFileDialog1.ShowDialog() = Windows.Forms.DialogResult.OK Then
MsgBox(OpenFileDialog1.FileName & " has been added into playlist")
ListBox1.Items.Add(OpenFileDialog1.FileName)
[Code]...
3. Lastly for the openfiledialog. As a new picture is insert, the name displays in the listbox is 'C:Documents And Settings......' which is the location of the file. Is it possible to limit it to displays only the filename, and not the location?
I'm using VB.NET 2010 When I try to add the items from a listbox to a textbox, I get a strange combination at the beginning of the textbox, but if I read further, the actual combination that I want is at the end.
So let's say I have 3 integers in my Listbox like: 01 02 03 And I want these three items to be in the Textbox like this: 01 - 02 - 03
[Code]...
I developing an application in WPF. I wantedwork with MDI. OK not possible.
View 3 RepliesI have a ListBox that is only about 4 lines high. After I add more than 4 Items, it attaches them to the bottom of the list outside of the viewable area with out scrolling. Is there any way to either add items to the top of the list or make the latest item visible? I want to keep all the items in the list in the order they were added whether it is oldest to newest or newest to oldest.
View 8 RepliesI currently know how to click a button on the application and when I click it, it invokes the OpenFileDialog Event or Object. After It Opens the Open File Dialog, I am able to select only ONE file from a location on my computer. After I click that Single File on my computer, I press the Okay or Open Button on the Open File Dialog, and then it adds that items to my list Box, knows as PlayList_00 and PlayList_01.
Here's what I got so far.
Private Sub addBTN_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addBTN.Click
OFD.InitialDirectory = "C:Movies"
OFD.ShowDialog()
PlayList_00.Items.Add(OFD.FileName)
[code]....
'I have built a Movie Play List, for my Windows Media Player.'But Selecting One item at a time is just fine, but I would really 'enjoy being able to select more than one item at a time, and then 'adding them to my ListBox(s).
I whant to entry data in a database (fild) by pressing a button. The problem is that the button is in form 1 and the database is in form 2.
In the Button1_Click i have the cod for Form 2 to show.
I am getting an incorrect repsonse after an update to a table. In my RowUpdating event I have the following code which builds an Update Parameter to call an SP to update a table. I must be doing something wrong but everything runs fine. My rowsAffected variable reports 1 after the update, but the table never gets the data.[code]I found a solution that is working. On the original DataSource for the update command I needed to add the following.[code]This in essence allows the original data source to call the SP. Note: that the command type needs to stay as TEXT not Stored Procedure as one might think.
View 3 RepliesI was trying to add a worksheet to my current active workbook. I had misreferrenced the command and got an exception thrown. OK, that happens. But what happened next kinda threw me for a loop. Now, and it still happening, everytime I use F10 step I get a new worksheet added. It is the strangest thing. OK, I gave up trying to figure out this problem. I solved it by selecting the entire form1.vb file and pasting it into a new application.
View 4 RepliesI am using VB.NET in VS10. After I add items to a list box I'd like it to scroll down so that the most recent items are visible. I tried this with no luck:
StatusListBox.SelectedItem = StatusListBox.Items.Count - 1
How to make the box always display the most recently added items?
How can i change the order that the items are added into the listbox? This is the original order:
[Code]....
And so on... What i want to do, in other words, is for the newest added item to be at the top of the list.
