Im trying to pooulate a combo box in vb.net 2008 with information from my access database, but I have no idea how to do thi :S im trying to get it so that the customer names from the database appear in the combo box this is as far as i've gotten for my form load.[code]
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can someone please give me basic steps on how to hard code a combo box to display a column from a database?
View 21 RepliesHow to populate a combo box using SQL Data Reader in DAL, BAL and UI atmosphere. Please find below my code snippets and correct me if I'm wrong anywhere in this code.
'DAL Code
Public Function PopulateComboBox() As SqlDataReader
_cnCon = New SqlConnection(_conString)
_cnCon.Open()
[Code]....
What should be the UI code? Is the code specified in DAL and BAL is correct? I knoiw how to fill the combo box with values from SQL Data Reader. But I dont know how this can be done in 3 Tier application.
i have a combo box that on form load is populated but i need to know when i click an item, i will be able to code how to populate other combo and text boxes with data about the same person.
View 2 RepliesI'm trying to learn how to write a data layer class to read in information and populate combo boxes, etc.
View 1 RepliesI am getting an error when i try to populate some combo boxes with a value, the combo box has values in and the right amount the code is getting the right number.
the error msg is "Object reference not set to an instance of an object."
The control comes up blank??Imports System.Data Imports System.Data.OleDb Public Class Form1
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I have a combo box with a data source. This box shows one column of a table and allows me to select one item.Next, I have an ordinary text LABEL that I need to put text from another column of the item selected above.I tried to set the data binding field of the label, but this grabs only the first row or data and shows the selected column. That is nice, but I can not figure out how to update the selected selected ROW when the combo box item is changed.In this case the combo box lists a bunch of inventory parts. When I select a specific part, I need the change the text in a label to show the manufacturer. (like a sub-form). This same behavior will be used in several other places, but the relationships can cascade.
View 4 RepliesMy Access database has one column named 'Term' and the Table name is 'ATG'. I require to populate my listbox with data in the 'Term' columns. I'm unable to do that using this code. Can anyone tell me what's wrong with this (it displays numbers from 1 to 10 and not the database data)
Imports System.Data.OleDb
Public Class Form1
Dim dbConnection As OleDbConnection
Dim dbCommand As OleDbCommand
[code].....
I need to populate data (Patient ID and name) from a MS Access Database table (PetientInfo) into a listbox depending on date (Datetimepicker). The listbox item will change upon date changed.
When I select a item from listbox the details of the patient will show to the textboxes.
I have a combobox that is bound to a BindingSource that contains a custom object with multiple Properties.
Is there a way to access a Datamember that is not displayed in the combo box and display it elsewhere. For example, When a user selects a name from the combo box, texboxes (or Labels) populate with Title, PHone, email, etc. All of this data is loaded in the custom object that is bound to the datasource so the info has already been pulled from the db and is in memory.
i tried a lot of variations in my code and even sql statement but still nothing happens.. i really need to do thing messed up project of mine and put all my efforts here.. but i really can't understand why my combo box isn't showing the names of the candidates w/ that designated position.. heres my current code:
constr = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source = " & Application.StartupPath & _
"SSC_Automation.mdb; Persist Security Info = False"
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i am working on a university student council voting system and what i wanted to do is when the voter selected the radio button name "Vote by Party list" automatically the names of all the partylist that are entered in the databse will be listed in the combo box and all the candidates on that Party list will be shown on the individual combo boxes made for each position..
What I am "trying" to do is to take a combo box control on my form, and load it up with data from an access db, but I dont want them to be linked so that when I change the combo box to another value it will cahnge record data. From the pics attached I have manage to load the data into the combo box, but the 2 are linked and when I try to change the combo box it creates violations in the database as its trying to change the records.
View 3 RepliesMy problem is retrieved data from database but when i run the coding, the combo box do not display anything.The below is my coding:
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I have made DataGridView in the designers and connected an Access database to the datagridvies and the Column headers appear as they should and when I check in preview mode all the fields are correctly populated. However, the DataGrid is not populated in normal mode at all. I have been trying to run the project but nothing is happening. What can I do to populate the field.
View 12 Repliesi am newbie in vb. and i facing a problem in database update into the access database. well, because of my windows have combobox and textbox. i dont have any difficulty in textbox update into access database, but i face a difficulty in combobox. and my combobox have 2 item in it. anyone can teach me? anyone can provide me some coding example and detail examplation. because i am the type who look through the coding and learn form it.
View 5 Replieshow can i retrieve the data that i've stored in an access db column and display it in a combo box in a vb2008 project?
View 1 RepliesI am using VB 2008 Express to connect to an Access 2007 database. I have a combo box that is populated by the database. When I used the Access report VBA, I used the AfterUpdate() event to calculate a sum and place the results in a text box. I need to know how to do the same operation in VB 2008 Express using the SelectedIndexChanged event of the combo box.
The combo box is called "cboYearMonth" and is populated by my database, this is working correctly.
The text box that I want the calculated results to appear in is called "ExactPagesTextbox"
I have a query in Access called "JobTypeExact_Query" that contains all the pages that I need. What I need to do is calculate the total number of "Pages" limited to the YEARMONTH selected in the combo box. YEARMONTH is a value in every record in this query.
I'm new to visual basic 2010 ultimate. I want to make a search button to "search" ms access 2007 database for specific data and display the results in datagridview. I also want to display the data to textboxes.
View 1 RepliesI have tested the code for the DataSet and DataAdaptor and both work fine, and as test was able to place the MaxRows variable into one of the text boxes on my form so I know thats all ok. But I am now trying to use the function below to copy the 1st cell of each row into a combo box to populate the options and comes up with a null exception error but cant get my head around it.
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I'm trying to populate a combo box with some data from a xml document, but so far all i'm getting is this error message in the combo box[code]...
View 2 RepliesI am new to Visual Basic and I'm trying to make a simple combo box that automatically populates from dataset. The table is from BaseMaterial with the column Material.
View 5 RepliesI have a form with one combo box and text box and buttons. please refer the snapshot with i have attached.I have the following code:
My Stored Procedure for inserting the data:
/*
Name: usp_InsertBranchSetup
[code]......
I'm trying to populate a combo box with a dataset, this sort of works, but everything is just appearing on the same line. I think this answer might be to put the dataset into an array, then put the array into the combo box.
...problem is, I'm not sure how to do this! My code thus far is,
Dim usernameList As Array
'Retrieve usernames where player has available status
GetFilteredData()
[Code].....
I am currently stuck in one part of my application. I have two combo boxes that i am having the users select from. The first combo box is simply bound to a datatable. that is working properly. The second one i need to populate off another datatable after sorting out what the first one is requesting. Basically it's choosing a line number on the first box and then selecting the machine associated with that line number.[code]...
View 4 RepliesI want to fill data in my combo box using Add range method.
cboFirst.Items.Add("Sunday")
cboFirst.Items.Add("Monday")
cboFirst.Items.Add("Tuesday")
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This is how im filling my combo with days. i want to do the Same but by using Add Range Method.
I am currently writing a program that needs the use of a database. At the moment I am trying to get a simple combobox working.The problem I am having is that I have never done any work with databases and VB08.I am using an access database that has the fields SMTP, Port, SSL
I want to populate a combo box with the field SMTP and from there I want 2 other labels to be filled in with the port and ssl details I was wondering a) How do I set the connection up with Visual Basic (within the database I am using MySQL to get the information) b) How do I go about populating the combo box?
Is there a way to populate a combox with a list of available drive letters? I've tried the following code but could not gt it to wrok.
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So I feel like im pretty close, but I also have a feeling I am mixing up StreamReader and ReadAllLines[code]...
View 1 RepliesI am using these codes to populate a Combo o a Listview. What i want is to populate de List or a Combo depending a selected value.
cn = New SqlConnection(stringdeconexion)
cn.Open()
Dim sql As String
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