How To Refresh Combo Box In Vb 2005
Jun 16, 2009
I have some text boxes in my form that takes data and saves the data to the database. There is a combo box at the bottom of the page that loads data from a specific field of a database. when I enter and save the new data (using the textboxes), the combobox doesn't show the newly entered data. I tried to refresh the combobox using code like combobox.refresh, me.refresh etc, to refresh the form but nothing is working the combobox only display the new data when I close the form and reload the form again. anyway, the data loading in the combobox is done using datasource, displaymember, valuemember in the properties. So, how can I make the combobox show the just added record (field)?
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Jul 16, 2009
See the below
Imports System.Data
Imports System.Data.OleDb
Public Class Form1
[Code]....
the last value inserted into the access database will be add to the drop down list of their corressponding combo box.
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Nov 9, 2011
I have a program where a user can select something from a combo box in a data grid view control. I have it so that they can add something to the combo box via input box. The new item would automatically show up in the combo box at the bottom.
Now the problem is with deletion. I have it so that a user will click delete and a dialog box will pop up with the combo box. There a user will select an item and click delete. The item deletes just fine from the db but it doesn't update the combo box on either the delete dialog box or the datagridview. The only time it shows deleted is when I exit the program and reload.
Here is my load event that populates everything.
Public Sub LoadData()
Try
Dim cmTasks As New SqlClient.SqlCommand("Select * from Tasks where Department_ID =
[Code]....
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Nov 15, 2011
I just had a question because I cannot seem to find the answers anywhere on the internet... also we are not upto this part in class yet.. Say I have 2 combo boxs... cmb1 and cmb2.. both are datasets from an access table.. how do I make it so cmb2 refreshes based on the value of cmb1? eg; if cmb1 is say, period 1, then i want cmb2 to only show results bases on items I have in period 1?
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Sep 17, 2009
The ComboBox Items collection is an ObjectCollection, so of course you can store anything you want in there, but that means you don't get a Text property like you would with, say, a ListViewItem. The ComboBox displays the items by calling ToString() on each item, or using reflection if the DisplayMember property is set.
My ComboBox is in DropDownList mode. I have a situation where I want to refresh the item text of a single item in the list when it gets selected by the user. The problem is that the ComboBox doesn't re-query for the text at any time besides when it loads up, and I can't figure out how else to do what I want besides removing and re-adding the selected item like so:
PlantComboBoxItem selectedItem = cboPlants.SelectedItem as PlantComboBoxItem;
// ...
cboPlants.BeginUpdate();
int selectedIndex = cboPlants.SelectedIndex;
[Code]....
This code works fine, except for the fact that my SelectedIndex event ends up getting fired twice (once on the original user event, and then again when I re-set the property in this code). In this case, it's not a big deal that the event is fired twice, but it's inefficient, and I hate that. I could rig up a flag so it exits the event the second time, but that's hacking.
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Mar 9, 2010
I have a Main form (a window form) in VB.NET which has a Combo Box to display a list of countries. A sub form activated from a "Button" on the Main form allows users to add Countries to their list. But After Adding a new entry the Combo Box on the Main form does not show the update (while it is still open). I have to exit the main form and relaunch it to see the update.
The populate function in shown below. I call this method after adding new countries but still; not good. I have used Invalidate function of combo box but of no use as well.
Public Sub PopulateCountry()
Dim rsLocal As New ADODB.Recordset
Try
[Code]......
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Dec 5, 2011
I have a datagridview bound to a bindingsource. This datagridview contains one column which is a combo-box.
Upon a click on a button,I change the underlying datasource. The selected values of the combo-boxes change.
But the change doesn't appear on the screen ! To make the changes visible (refresh each combo-box), I have to hover on the datagridview with the mouse or use the scrollbar !
Question 1 : why do I see this ?
Question 2 : what should I do to make the changes immediately visible ?
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Dec 21, 2009
picture box refresh issue in vb 2005
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Feb 4, 2009
Take a look at this little snippet of
cnt += 1
Me.lNews.Text = "Redd Loop..." & cnt
Me.Refresh()
[code]....
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Jan 14, 2011
I have a form that remains open while running an application. The user can open multiple instances of a form to edit customer information. After editing and exiting an instance of the Customer form I want the form with the buttons to refresh and show the changes. Basically the form show the availability of storage units, green rented, yellow available and red is late payment. Right now I am acheiving this by closing and opening the button form when I exit the Customer form. This works but there must be a better way to do this.
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Feb 17, 2009
I need to refresh the whole screen/desktop.I am painting a rectangle and need to have it clean and not leaving marks when it is dragged around.There were a few claimed APIs that could do it. And then some others which were more specific to other languages.
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Sep 1, 2011
I need some help with coding that is attached to a reset button. I need it to reset the form's controls (textbox,combobox,etc.. to it's default values, but I can find what to use. I've found information on clearing the values which I don't want to do. I just want to reset them as if the form just loaded.
[Code]...
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May 25, 2009
i'm working on a desktop application in vb.net, using vs 2005 and mssql 2005. i want to refresh the pages everytime i insert a record, but i only succeeded by having a load button where user has to click everytime they add a record to view the new record. Is there any way(s) to auto refresh those pages?
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Apr 11, 2009
i am new to vb2005 and i am developing a project of a restaurant in vb2005. i have two combo boxes of PRICE and SOFTDRINKS. there are 5 different soft drinks and there are five different prices of the softdrinks in the combo box of PRICE. my requirement is that when i select the soft drink in the combo box of SOFTDRINKS then automatically the price relevant to that soft drink should be selected in the combo box of PRICE.
[Code]...
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Oct 19, 2011
With my combo box.For your info i have 4 combox box which bound to database. The probleam is if i choose one of the list item in 1st combo box then other second , third and forth combox box will display the same item. This is cause me a probleam because i am creating form for calculate price item. First combo box must have different item list from second, third and forth.For your info too all this combo box is connected to 1 table with column item name. Please advice or show me how i can make that if i choose one item list in first combo box then second , third and forth combo box can display with different list item .
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Aug 31, 2011
I would like to implement a code which executes what a user selects from the combobox and display related data from the access database on the datagrid.I have managed to connect to my database.How do I connect the combo box action to display information on the datagrid?elow is a code that am using to read the contents of my table from the database and display it on the datagrid.
cnString = "Provider=Microsoft.Jet.OLEDB.4.0;Persist Security Info=False;Data Source=C:UsersHomeDocumentsIADCS PROJECTS 2011SAD PROJECT 2011StockControl.mdb"
sqlQRY = "SELECT * FROM Category"
[code].....
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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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Jun 19, 2009
I 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
[Code].....
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Mar 19, 2010
I have the following bit of code which works find but I have been asked to show for the displayvalue the storecode - storename. How can I do this?
sSQL = "SELECT * FROM ST_STORES WHERE ST_RG_CODE = '" & cboRegion.SelectedValue & "' ORDER BY ST_STORENAME"
sqlDSStoresCombo = rppData.tblGetTableData(sSQL, "ST_STORES")
[Code].....
I think I manually need to add the items but don't know how to add an item that has a value and display.
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Sep 14, 2010
I have a combo which contains a lot of different colours. If I press b it goes to the b's in the list and if I press it again it goes to the next b. Is it possible to jump to the colour as I type it so if I type blu it would go to blue. Currently it jumps to the first b when I type b but ignores the lu for blue.
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Jun 5, 2009
Lets say i label "label1" , and 2 buttons named "button1" and "btnRefresh " [code]So , when user press the button 1 , the text will change. But what should i put inside btnRefresh to reload the forms ? and display the default label.text = "Form Load" ???
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May 11, 2007
I was wondering whether it's possible to change the highlight colour for a combo box without having to create a custom control? Just to try and make what I'm asking clearer, it's not the ForeColour or the BackColour that I'm wanting to change but the colour that's shown by the mouse when you move it over the combo box items.
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Jan 22, 2009
I have a form that has some combo boxes in it, and a table in SQL Server that stores the Values for the selected item for the combo box.I have read the data out from the combo box and inserted it into the SQL table as a integer. Now I want to read it back in to the form.
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Dec 1, 2009
Combo Box:Event KeyPresssetup simple msgbox to test the response to <Enter> key the event will not fire unless the enter key is preceded by <Alt> key firstText Box:
Event KeyPress
setup simple msgbox to test the response to <Enter> key
The Event fires correctly
[code]....
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Feb 24, 2009
i wanted to link options selected from Comb box A (general) to specific options in combo box B (specific). I want to pick a word in Combo box A that has specific words/phrases in Combo Box B show. But not all the words to show in the combo box B if they aren't associated with the Word picked in Combo Box A. Ex.When "Soda" is picked in A, only "Coke, Sprite, Fanta" should be visible in combo box b, not everything else.This is the code i used to make the boxes, but i don't know how to link them.
Private Sub MainForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
' fills the combo boxes with values
Me.xGeneralComboBox.Items.Add("Soda")
Me.xGeneralComboBox.Items.Add("Juice")
[code]....
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Feb 21, 2012
How to use a databound combo box to display one field in the drop down, and another as the combo box text on roll up? Using VS 2005... For example, I have a datatable that has 2 fields. One called "ShortDesc" and one called "LongDesc". I want to be able to see the "LongDesc" column values in the drop down on the combo box. When I make a selection, I want the text in the combo box to read the corresponding "ShortDesc" value.
[Code]...
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Nov 16, 2011
I 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."
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Jun 7, 2012
Combo box 2 is filled based on a selection made in combo box 1 and a listview is populated based on the selection made in combo box 2.When the LostFocus event completes in combo box 1, it hits the LostFocus event in Combo Box 2 but it shouldn't. How do I prevent this from happening or if I can't prevent it, how do I work around it? The following is the code used.
Private Sub cboCategory_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles cboCategory.LostFocus
[code].....
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Mar 1, 2009
Attached is the image from an Office application, how can we emulate such?
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Jan 21, 2009
Is there a way to make a DataGridView's column a combo ONLY in the "new row", and a read only textbox in all other rows? I want the user to be able to make a selection from the combo box, and when the row is finished and the "new row" moves down one, I want the column to become a textbox containing the what the user selected. My grid will be bound to a table witch contains a "category" column, that is drawn from a seccond table that i want the combo box bound to.
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