Filling A Combo Box From A Database?
Oct 15, 2010
i have a combo box that i'm trying to fill from a database, managed to get it working through the wizard and the form view method but could do the next bit that way. I then started to try it the coded way, got the database linked but it only shows the first name in the database, how do i get it to show all the names in the database?
this is the code for the form
Imports System.Data.OleDb
Public Class NewTicket
Dim ds As New DataSet
[Code]....
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Apr 29, 2009
I'm trying to get a combo box to fill itself from a MS access database field but I can't get it to work. I can get it to work at school but not at home. Also can't get a program that worked at school to work here so I'm guessing that somewhere there is something blocking the connection to the database. I've gone into the MS access trust center and looked at the settings there but I can't see anything that would be stopping it. I just need to find that setting (if it is indeed a setting) wherever it is and fix it so that I can access my database. I am not using visual basic from access I am accessing access through visual basic.
I can't get it to work with an ADO connection, either. Also when preview data via clicking smart arrow on the combo box then going to preview data I can see the data just fine. Also I just noticed I get two lines in my output after the file is run that say "A first chance exception of type 'System.InvalidOperationException' occurred in System.Data.dll" I don't get these lines if I comment out all the code for the combo box.
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May 23, 2011
I am trying to fill a combo box using a dataset and data adapt. I am struggling too work out how to do it. I thought it would have been easy but I was wrong. i can set the text to read the first line of the colomn but nothing else. I was wondering if anyone could help me out with what I have to do. I think I have to increment inc and add a line underneath but I don't know how to do that
comboMaps.Text = datSet.Tables("TheLastShot").Rows(inc).Item("Maps")
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Feb 20, 2011
i'm finishing up on my A2 Computing project now and am trying to make a few improvements. first of all, i want to fill a combo box with a list of variables from my database, so when they enter a new record on my vb form, they will have an option to choose from..
my attempt at coding:
Do
ComboBox.ObjectCollection.Equals(ds.Tables("TTDB").Rows(inc).Item("GroupID"))
inc = inc + 1
Loop Until inc = MaxRows
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Jul 15, 2009
I have a dataGridView in my program that displays stuff .The invoice No column has a combo box what I wanna do is when the form loads the All the invoice No's which r in the DB should be loaded into the combo box When I select the Invoice No using the combo box the rest should fill
this is what I did --
In form load wrote a code to fill the combo it din work
I tried but the combo box didnt fill
[code]....
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Mar 12, 2009
I'll start off with a brief explanation of my situation. I'm doing my A-Level coursework project at the moment and am having some difficulty trying to figure something out. My project is a VB.NET Program that connects to a Database to display/add/delete/update records. At the moment I am having trouble with one particular thing which must be solved before I can move on (and the deadline is fast approaching).
I have a combo box which contains a list of different item types (Which match up to the item types used in the database, but it is not filled from the database). When the user selects one of these options, the list box below must fill with all items of that type that are in the database.
Unfortunately I'm at home so I can't get access to my coding, but I can try to explain what I've tried. I've tried so many things after trawling though what seems like endless amounts of tutorials to find an answer.
One thing that is used in pretty much all of them is the SQL string to select the needed records;
"SELECT ItemName FROM Stock WHERE ItemType = Anime"
Now, this has been used many different ways. I think the way that I'm trying at the moment is to create a new data set that contains the records that are needed for the search. There is already a data set that contains the whole table that is needed for this particular form. I think my most recent attempt was trying to copy the relevant information from the original data set to the new one, but I can't get any coding that isn't incorrect.
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Jun 21, 2010
What I'm working on is a video rental project in visual basic 2008. I have a local database which contains info on DVDs, Members and a table for current rentals.The columns i have in the current rentals table are:
MemberID | DVDID | DaysOnRent | DateRented | DueDate | Overdue | TotalPrice
I have this data displayed in a datagridview, but the user adds it through a seperate form (called add a rental) with a 'details' view of the table on it. I've written code to automatically determine the TotalPrice and DueDate of the DVD in the add a rental form.
The Problem:I don't know how to get the database to automatically detect when a DVD is overdue (when todays date is greater than the DueDate).I want it to check it in the column "Overdue" (which is boolean)..so basically what I'm asking is how do i update the overdue column automatically depending on whats in the DueDate?
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Jun 3, 2012
I'm new to databases and am working on a database program. It was written in vb6 and im trying to rewrite it in vb.net. I've completely stripped the program down from all the unneeded fancy addons and now just have the needed code to run it.
[code]...
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May 5, 2012
I'm trying to fill a ComboBox with values from a column in a database.I'm trying to use code I found in jmcilhinney's CodeBank post at url...credits to him since it's basically 100% his code in my image below I've tried 4 methods before this, and I've been receiving the same error, so it must be my fault.
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Oct 29, 2009
I have a dataset in my application that I fill using tableadapters like this:
Class Form1:
sub new()
Database = new Database
end sub
Class Database:
sub new()
tblLalalalaTableAdapter.Fill(DataSet.tblLalalala)
end sub
I am told it is too early to call the tableadapter.fill method inside the constructor. If the database is unavailable now, the application won't even start. It will just kinda crash. What is the proper way to do this? When should I call the tableadapter.fill methods?
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Feb 22, 2011
how can i add records from list view to database ex. im going to have a transaction i will add products as many as i ordered in my listview and then i insert it into my database with the 1 transaction number it should be like this:
[code]...
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Apr 4, 2010
Here i have code filling a drop down box with the company name.
Private Sub Filllistcomp()
listcomp.Items.Clear()
'define select statement
[CODE]...
This part works. The drop down menu is filled with all the company names. The following part does not work how ever.
Protected Sub listcomp_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles listcomp.SelectedIndexChanged
'create the select statment that serches for a record
[CODE]...
There is no error thrown either. The information is just not showing up.
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Jul 4, 2010
I am using a Class_SQL that gets the table, creates the DataAdapter and DataTable.I have a combobox named cboFullname. I can fill the combobox with data from the database, ie: Dim sqlcmdtext As String = "SELECT *, Firstname + ' ' + Surname AS Fullname From Contacts". I can display full records in a datagridview.
I would like to be able to select a name from the combobox and have the record text boxes display the data and be changed with the cbofullname index changed subroutine. Here is my current code to date:
Public Class frmMain Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]...
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Jan 9, 2011
I got a problem I need to search by First Name OR Surname. So the user can enter one or the other or BOTH.
So here's what I got I set two primary keys to try and find the row but I'm gettin all sorts of problems, for example when I set FirstName & Surname as primary key which you need to do to use the find method i get an error as it expects two values..
Dim da As New SqlDataAdapter
Dim con As New SqlConnection("Data Source=UserSQLEXPRESS;Initial Catalog=StudentTeacherDB;Integrated Security=True")
[Code]....
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May 5, 2012
I'm trying to fill a ComboBox with values from a column in a database...I'm trying to use code I found in jmcilhinney's CodeBank post at url. credits to him since it's basically 100% his code in my image below.I've tried 4 methods before this, and I've been receiving the same error, so it must be my fault... the image below shows the code and the problem.
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Jun 22, 2010
I am filling a datagridview with multiple columns from my oracle database. It has become necessary that I add a column with a checkbox. I figured this out.
[Code]...
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Jun 28, 2010
I add several unbound columns to datagridview,i've succeeded to copy data from other datagridview to this unbound dgv and also got save database from unbound datagridview to database using tableadapter.insert worked .But i can't figure out how to display the data back into the datagridview with existing column..I've tried using this way :
Try
Dim cn As OleDbConnection = New OleDbConnection_
("Provider=SQLNCLI;Server=.SQLEXPRESS;Database=salon;Trusted_Connection=yes;")
cn.Open()
[code]....
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Aug 29, 2009
This is the code that i did to fetch data from the database and filling it to the combobox dropdown list at the form load event:
[Code]....
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Oct 15, 2011
How i can add data to database through combobox but the data is foreign key
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May 17, 2012
How to get get complete column from database to combo box ?
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May 29, 2012
PROBLEM: I want to only show specific database records based on serveral combo-box inputs from a user. I'm looking to query an Access database from within a form I've created for viewing simple Jpegs of CAD files and pointcloud data. I've never worked with table adapters, SQL statements, or much in the way of databases before and I'm lost.
Do I add a new query and do what I want from a configuration wizard somehow? That method gave me a toolstrip button with no combo-box.Should the combo-box be bound to the table or should it stand alone?Can this be done without the use of a wizard (purely in an event) I've been told what I'm looking to do is rather simple, I'm just unable to find syntax that has worked for me.
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Jan 17, 2012
In my Visual Basic application I have added a Access 2003 Database to the Data Sources. When I drag and drop the table I want onto the form in Details view, it all appears very nicely with the added bonus of a Calendar selector thing for the field with a Data Type of Date. However I have used some Lookup Wizards while setting up the database in Access and they appear as Text Box, how can I make it so they appear as combo boxes with the selection from the lookup wizard?
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Feb 4, 2012
i just got 1 question how do u create a (in excel ) variable table (database) inside a function which could be called for filling and reading through "for to next" loop module
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Jun 2, 2011
I am trying this..
Imports System.Data.OleDb
Public Class Form1
Dim conn As OleDbConnection
Dim cmd As OleDbCommand
[code]....
I get an error: object reference not set to an instance of an object
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Mar 13, 2011
This code is correct...
Do While rdr.Read
issuebook.cbmember.Items.Add(rdr.Item("FName"))
Loop
Suppose i want to add both last and first name..I tried this but getting a error
Do While rdr.Read
issuebook.cbmember.Items.Add(rdr.Item("FName" & " " & "LName"))
Loop
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Dec 26, 2010
I'm trying to bind a combo box to a Access database field. I'm trying to do this with code instead of using the data sources wizard as I was told that this would be more flexible and better if distributing the finished program to other computers.
The result is that the form runs, but nothing is in the combo box.
I have also not used a dataset in my code, only a data table. Am I correct in thinking that this is plausible?
Imports System.Data
Imports System.Data.OleDb
Public Class Form1
[Code].....
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Aug 19, 2009
I'm doing an application which uses the Database Wizard to link the textboxes, labels, and combo boxes to the data base. (Visual Basic in Visual Studio 2008). (Visual Basic 2008 by Shelly Cashman-Chapter 10)There are two problems: One of the combo boxes has the unique key identifier. You are supposed to be able to use the combo box arrow to select one of the unique keys. Every time I click on one of the unique keys to see the records connected to it, VB acts like I'm trying to input a duplicate key. My teacher hasn't been able to figure this one either. If I was connecting the code, I could fix this but I have no clue since I have to use the Database Wizard on how to fix it.
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Jun 6, 2011
can someone please give me basic steps on how to hard code a combo box to display a column from a database?
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Nov 30, 2009
Visual Basic 2008 I want to put data in combo box from MySQL database.
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Jun 10, 2011
I'm doing a project in vb.net back-end is MSACCESS...
I don't know how to store data from COMBO BOX and to RETRIVE data from database to COMBO BOX.[code]...
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