Refreshing Databound ComboBox Values On Form
Jun 9, 2008
I have a databound combobox that displays a list of items, and I have a windows form that opens after clicking a button that allows me to make changes to the table that the combobox gets it's values from. When I make the changes and save them (successfully) and return to the parent window, the changes aren't reflected in the combobox. If I exit the app and launch it again the changes are reflected perfectly. I've tried me.combobox.refresh() on the forms GotFocus event, but no luck.
View 3 Replies
ADVERTISEMENT
Jan 5, 2011
I want to refresh a form that has a listbox which is databound to a source. Me.Refresh() doesn't do the job. I tried reloading the orginal sub thats also doesn't work.
View 14 Replies
Jan 27, 2010
I am using VB.NET together with ADO.NET to create a program. I have set my TableAdapters as needed and bound the correct tables-columns to my comboboxes.My problem though is this:My combobox2 item is bound to a datatable. The table adapter's Fill method (the select command basicaly) includes a public variable in the where clause to fetch the correct results. I ll put some code here to clarify it a bit more.Public Class Frm_inv
[Code]...
View 5 Replies
Mar 25, 2011
I have a combobox which is populated using a tableadapter. I set the selection to nothing on form load
Me.OfficersTableAdapter.Fill(Me.DsOfficers.tblOfficers)
[code]....
How can I make the combo show the correct items ?
View 6 Replies
Oct 11, 2011
I want to update the contents of a combobox in a VB program. So I change the underlying data structure (which is an ArrayList), and according to the documentation in [URL] there's a RefreshList method which should do this. But Visual Studio tells me that there's no such method, and when I type it in manually I get an error saying that RefreshList is not a member of System.Windows.Forms.ComboBox.
[Code]....
View 17 Replies
May 2, 2012
I have a combobox that is bound to a dataset (via datatable and datatableAdapter). The combobox displays the current data in the table as it should.I have programmatically added the string "ADD..." to the list at the form.shown event:[code]when the user then click on (select) "ADD...", i open a new form to allow the user to add a new item to the list.The code i have behind the "ACCEPT" button on the new form stores the NEW value to the DATASET. I have verified this by previewing the data in the dataset.My problem is getting the combobox to reflect the changes to datatable to which it is bound.[code]
View 7 Replies
Dec 27, 2010
I have cascading data-bound combo boxes, however, if the second of the two boxes does not have the value, I am trying to change the data source of the original process to the default selection.
However I am getting errors no matter what I try to do to get the combo box to clear.
cboSubSystem.SelectedIndex = -1
cboSubSystem.DataSource = Nothing
Call cboSubSystem.Items.Clear()
[Code]....
Currently: "Items collection cannot be modified when the DataSource property is set." at the Items.Clear If I try to remove the clear, I get "Cannot bind to the new value member. Parameter name: value" at the valuemember set
View 1 Replies
Jul 18, 2011
I have a combox that is run-time bound to a table that is run-time built and populated from a text file. I have set the combobox autocomplete mode to suggest and the source to list items, but only the 1st item will work. Ok so here's the code:
Private Sub SetStateComboBox()
'set autocomplete for combobox
state_cmbx.AutoCompleteMode = AutoCompleteMode.SuggestAppend[code]....
The file is a text file with a list of the 50 states and their abbreviations in the format : stateName - abbr.Now what happens is the data is displayed correctly, but when I begin to type a letter for the autocomplete the only letter that shows anything is the "a" and it will only show the very first item in the text file.Everything else does not display with the autocomplete, but does show in the list. I have tried variations such as adding the data as items like this:
Private Sub SetStateComboBox()
'set autocomplete for combobox
state_cmbx.AutoCompleteMode = AutoCompleteMode.SuggestAppend[code]....
This way does not allow any autocomplete when I begin typing but everything is in the list. I've also tried converting the table to a customautocompletestring and still the same results.The only way that I have been able to get it to work is be entering each state as an item: state_cmbx.items.add("Michigan - MI"), then it works correctly.Also the combobox dropdownstyle is set to dropdown, and I'm using visual studio 2010 ultimate and coding using VB.
View 2 Replies
Sep 10, 2009
All I want is to enter text into a databound combo box. If the entry is not in the list, then the user should have the option of updating the table that the combo box is bound to.The way I have set up the project is by dragging objects from the toolbox and having the application set up the datasource through the data sources tab. This in turn creates the bindingsource, dataset and tableadapter.For updating the combobox I have added code into the leave event. This does indeed update the client table as required. However, the id stored in the quotes table is -1. How do I make sure that the correct id is stored that references the newly added client record. For your information, the client table only has an id and clientname column.
The code is as follows:
[CODE] Private Sub ClientComboBox_Leave(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ClientComboBox.Leave
Dim con As New OleDb.OleDbConnection
Dim dsClients As New DataSet
[code]....
View 4 Replies
Mar 17, 2011
I have a ComboBox that's been bound to a DataView that's taken a filled DataTable. This DataTable has three columns. Before the DataView is bound to the ComboBox I add another column and set some values.
[Code]...
View 2 Replies
Jan 9, 2011
With a datagrid, I want to use a databound combobox to set the value of a property with the combobox's selected value. How would I go about doing that?
View 1 Replies
Nov 15, 2011
how to load the combo box'values from one form to another form's combobox
Example:
form1:
cust(table name)
no(textbox)
[code]....
now i load the form1's name which is the combo values .. to form 2's combo box whixh is name of 'CName'
View 2 Replies
Mar 4, 2012
I can't figure out how to refresh the combobox on my main form after I have added or deleted an item to the table that populates the combobox. I use a separate form to add, change and delete items in the combobox table. I have tried different suggestions that I have found on the subject on the web. Nothing seams to work... Here is what I have right now that does not work.
[Code]...
View 6 Replies
Apr 4, 2012
How can I add data to databound combobox in vb 2005
View 1 Replies
Apr 10, 2009
This is what I came up with:
Public Class IndexedDropDownItem
Private _KeyCode, _Display As String
Public Property KeyCode() As String
[Code].....
I want to be able to have the DisplayMember show "key_code - descript", while retaining the value I have set.
View 1 Replies
Jan 11, 2010
been struggeling with this issue for quite some time now. I`ve got aan combobox on a detailform.
[Code]...
View 3 Replies
Apr 20, 2009
On my form I have three fields and a datagrid view.One field is a combo box.All fields are databound.The datagridview is a detail grid, bound in the "normal" way. Scrolling through records, etc., all work fine.What doesn't work is when a selection is made using the combo box.The underlying table has a self-join of one-to-many: ParentID, ChildID. ChildID is the main ID for the underlying table.Children may have a parent This is just by way of example.So, the combo box's Value is bound to ChildID, and the SelectedValue is bound to the ParentID.On the form one chooses the Parent with this combo box.When I test this arrangement, I select a Parent, then click Save (using the default toolbar actions). However, the combobox seems to "reset" the selection to the first in the list.
View 1 Replies
Sep 7, 2009
I started a Windows app using all code for database connection and validation. However, it was always losing the formatting that I had set at run time. So I thought I would use the long tedious process of using all of the studios objects with minimum code.
I am now at the position where I am mostly happy with the layout and how this operates. However, I want to be able to add a non-databound value to a databound combo box. I have set the properties for the combo box in the combo box tasks.
Also, I want to add the ability for the user to update that table that is bound to this control, when a value is not in the list. I know that there is a NotInList event in Access, but I can not find it in VB.Net. I did get so far with updating from the combo box using the Leave event. However, when the database was updated the control could not find the ID in the Clients table to save to the Quotes table.
View 1 Replies
Mar 22, 2009
I'm currently coding an ATM system in VB, and when a user picks a card to 'log on' with, they have 3 attempts to log on before the card is confiscated. The card numbers are in a combobox (which are retreived from an SQL database using the DataAdapter), and each card has a boolean 'confiscated' field in the database.
[Code]...
View 1 Replies
Mar 22, 2009
I'm currently coding an ATM system in VB, and when a user picks a card to 'log on' with, they have 3 attempts to log on before the card is confiscated.
The card numbers are in a combobox (which are retreived from an SQL database using the binding source which is linked to a data adapter), and each card has a boolean 'confiscated' field in the database.
It does actually set the card to confiscated after the 3 tries, however I'd like the form to 'refresh' so the card no longer appears in the combobox, without having to close down the form and reload it. Is there a way to do this? I've tried refreshing the combobox and data adapter (.Refresh) but this does nothing
View 2 Replies
Oct 3, 2011
I have a databound ComboBox on my form. Is there any way that I can make the first field blank.
View 1 Replies
May 30, 2012
The Combo-box only has three items (Top View, From South looking North, From West looking East). Bound data from an Access Query called qryViewsFilteredByJob. I'm using it to pass a parameter to the filter for a binding source on a second query called qryAllSections2 (I don't think that's important though.)
When the form loads up it displays correctly stating on 'Top View', and I can click another other item just fine. When I pick another item, however, the first item, 'Top View', disappears and it replaced by whatever item I just clicked. So if I clicked 'From South looking North', the three item choices are now 'From South looking North', 'From West looking East', and 'From South looking North' again...
View 2 Replies
Nov 20, 2011
ut refreshing a databound Combobox After New Data in Imported into the Database. As it seems not be updating Without Closing the Form Thus resetting the Binding Source. but how can i do this on the Fly Lets say on the Combobox is Clicked it dose the updated List?
Its starting to be Quite Irritating That it is dosen't seem to be affected by:
ComboBox1.ResetText()
ComboBox1.Refresh()
[code].....
View 2 Replies
Nov 21, 2011
I've made a windows form in which I can change names in my databasetable 'stations'. To select which station to change I've used a databound ComboBox which gets all stations from the database table.
Now when I change the name of a station I want to get it immediatly updated in my combobox without restarting the application.
View 1 Replies
Dec 1, 2010
I got a pizza shop and the assingment is to create a application which allows the user to take a customer's order... I have a combo box filled with all of the items you can order (data from an access file)... and I need to have it so that when you select an item, it shows up in a text box below... I keep getting an error message saying you can't convert datarowview to string..
Here is some
Private Sub TakeOrders_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'PROJECT4DataSet.Items' table. You can move, or remove it, as needed.
Me.ItemsTableAdapter.Fill(Me.PROJECT4DataSet.Items)
[Code] .....
View 2 Replies
Mar 23, 2011
here is the situation i am using the combobox with the databound dataset..i produce two combobox for that one field because i need to display the selected data in separate tabs... the combobox 1 is working perfectly i can select all data i want to but in the combobox 2 i can only see those data and when i select data on it, it will not display the selected data.. it still remain on the previous displayed data...
View 8 Replies
Feb 24, 2010
I have an application working great that has a data-bound combo box.My question is When the user types in box the results are not shown unles I manually click the drop down arrow.
View 2 Replies
Feb 5, 2010
I have a combo box that's filled from a query in the database. If I add a field to the database, the new field won't show up in the form until I close it and reopen it.
So, how do I refresh the contents of that combo box?
I bound the data onto the combo box like this:
[Code]...
View 3 Replies
Dec 23, 2010
i am currently making a project which is to make a cinema screen booking system. Im a beginner of course`*My main problem is that although i have most of what is working i need to find a formula to give the full result (overall price) in a label.*My other problem is the fact that when i interact with my form certain things dont auto refresh when i change certain values e.g i change number of seats but it doesnt auto refresh the price from times1 to times2. OR i click one discount radiobutton which works then another after but nothing changes and it keeps the first radiobutton's value.Okay in my menu i have a ComboBox (ComboBoxScreen) for choosing the film and there are 3 films to choose from in the drop menu each with their own price.I also have a Textbox (NumberSeats) for inputting a number of seats you want to book for the chosen film.And lastly there are 3 radio buttons each with different discounts.. e.g No discount, 10% off and 25% off. If selected each gives discount to full price.A formula to work out the overall price uses all three functions/tools above.My current code for the combobox and radiobutton part is as follows: [code]
View 1 Replies
Jul 6, 2011
i am currently making a project which is to make a cinema screen booking system.My main problem is that although i have most of what is working i need to find a formula to give the full result (overall price) in a label.
My other problem is the fact that when i interact with my form certain things dont auto refresh when i change certain values e.g i change number of seats but it doesnt auto refresh the price from times1 to times2. OR i click one discount radiobutton which works then another after but nothing changes and it keeps the first radiobutton's value.Okay in my menu i have a ComboBox (ComboBoxScreen) for choosing the film and there are 3 films to choose from in the drop menu each with their own price.I also have a Textbox (NumberSeats) for inputting a number of seats you want to book for the chosen film.
And lastly there are 3 radio buttons each with different discounts.. e.g No discount, 10% off and 25% off. If selected each gives discount to full price.A formula to work out the overall price uses all three functions/tools above.My current code for the combobox and radiobutton part is as follows:
QuotePublic Class txtSeats 'name of form of which is being used'
Private TEN_DISCOUNT_Decimal As Decimal = 0.1D
Private TWENTY_DISCOUNT_Decimal As Decimal = 0.25D 'percentages?'
[code]....
Where FilmCost is the price of each individual film (one is £4.25 shown above)OR lblCost is filmprice times seats.Where TotalDiscount is the discount worked out.Where TotalCost's is a value that can be shown in a label as the overall price.
View 4 Replies
