Combo Box List Populated At Runtime?
May 10, 2010
I have a project that currently uses an XML config file to create some groups. Based on these groups, you can search a database for information. What I want to do is create a form for editing that file. I can get to the information via messagebox, but when putting it into a ComboBox, I can't get the list updated. I have tried the text property which only populates the initial selection, and the Items is a read-only property. Nothing else looks close to what I want to do.
My other thought is to populate a datatable with the information and then populate the combo box from the database. It seems like an extra step that I shouldn't need, but it may be the only option right now.
The reason it can't be hardcoded is that the XML config file is already being used by a program, and the file may be updated from two or three computers, meaning I need a central location for the file.
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Apr 29, 2010
I have a combo box and onload I want the combobox to be populated with data in a field from the database. However, when I execute I receive an empty combo box please could someone look what am doing wrong..
Private Sub populatecmbprojtype()
Dim cmd As New SqlCommand
Dim conn As SqlConnection = GetDbConnection()
[code]......
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Jul 21, 2009
VB.net VS2008 My program dynamically populates a class as I click on specific calendar dates runtime. I am currently using various LINQ statements targeting this class for reporting purposes. However, all of my LINQ statements are hard-coded. Are there available solutions / modules which will provide me with a LINQ command and RESULTS window which can be set to an instance of a class so I can experiment with other commands runtime? Can LinqPad be used runtime against populated classes?
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Aug 4, 2006
The Projects List on my Start Page is not being populated with the Projects I open. It's empty.Does anyone know what could be the problem? I can see the entries being recorded in the Registry key:
HKEY_CURRENT_USERSoftwareMicrosoftVisualStudio8.0ProjectMRUList
But VS isn't reading them in for some reason.
I'm running Visual Studio 2005 Professional.
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Jun 26, 2010
how do i read the first line of text of every text file in a folder and populated in a list box. Also how do I get it to show the file name in a text box when you select an item in the listbox
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Dec 20, 2010
I have created multiple dropdown list at runtime and populated with data. I also have added an eventhandler to determine the selected value of the drop down list.
The code is as follows :
Dim tbl As New Table()
tbl.EnableViewState = "true"
[code].....
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Aug 2, 2009
How to create Combo box at run Time with its Click events and Key Press events.
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Dec 27, 2011
There are some List of items in my ComboBox Collection to choose the necessary on run time.But on Run time, I can also write the value on the combo text and it is also saved in the database. I dont need anything to be changed on the combobox. I need only the items to show in the dropdown list. No other items can be added to the database using combo box on the run time.
how can i manage that without using e.SuppressKeyPress=True ?
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Aug 10, 2009
I am working with Vb.net and have a form with a combo Box. On load the form is loaded with one of the following details depending on what is stored in the database; Cancelled, Processed and Failed.
Code:
TxtColStage.Items.Add("Cancelled")
TxtColStage.Items.Add("Processed")
TxtColStage.Items.Add("Failed")
Then I have an update button and when the user drops down the list he/she can select between Cancelled/Processed/Failed. I want to be able to grey out or disable Processed and Failed, so that when the user updates the field he/she can ONLY update with the Cancelled option ONLY.
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May 31, 2012
I am creating grid on form load event. Initially I am setting some values in datagridview combobox as :
Dim dgvc As DataGridViewComboBoxCell
datagrigview1.Rows(0).Cells("Column1").Value = txtColumn1.Text \setting selected item
datagrigview1.Rows(0).Cells("Column1").Value = txtColumn2.Text
[Code]....
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Nov 30, 2009
I am trying to create a WPF browser application that allows you to search and display recipes. The combo box presents choices, the Ingredients display in one list box and the "cooking" instructions appear in the other list box. What's happening is the first time you make a selection from the combobox nothing displays, and this could be happening because the first line of code under Selectionchanged clears the List Boxes however, it should be populating those list boxes with content, shouldn't it? Anyway, as you make other selections List boxes 1 & 2 get populated but they do not match what displays in the Combo box, i.e. if you select "Easy Taco Dip" any random recipe might appear in List Boxes 1 & 2.
Option Explicit On
Class Page1
'User Makes a selection from the ComboBox which populates List Boxes 1 & 2
[Code].....
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May 13, 2012
Basically I need to create a form that will display a summary of the population trend for each species of butterfly from a database that I have.I will do this by having the user select which butterfly species he/she wants to view from a combo box and then the list box will display the count_2010 and count_2011 information for that butterfly species.
I have managed to link my combo box to the database but I am unable to get any information to be shown in my list box. I can use a select case and input text myself but I don't want to do that as in another form records need to be added. Is it possible to have the relevant fields from the access database show up in the list box after the user selects a species from the combo box?
[Code]...
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Jan 15, 2012
I have a list box with 5 selections. when and item in the list box is selected i want a combo box to populate with different selection. any ideas on how to get the combo box to populate?
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Feb 28, 2011
How to make sure that combo box value is one from it's list?
I don't want to use DropDownStyle property as DropDownList because I have to allow user to write into the box with help of AutoCompleteMode but I have to make sure that inserted text is one offered from the list.
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Mar 7, 2011
If i want to bring the target that i've selected from the combo box and post it in the listbox. what code would do tat?
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Apr 7, 2010
If i want to bring the target that i've selected from the combo box and post it in the listbox. what code would do tat?
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Aug 22, 2011
I'm having kind of a hard time about this, just would like to ask if anyone knows how to check if a string that is input by the user in a text of combo box is in the list of the combo box?
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Aug 29, 2009
I have a ComboBox with around 50 google search engines world wide list that looks like tihs
[URL]
and so on and so on
I have 50 of them
Now the thing I want my ComboBox to do is this, if I select lets say google.co.uk I want my resaults to be searched on google.co.uk if I select .de only list from .de should be searched how can I achive this ?
My list is allready coming back from [URL] but dont know how to doit so that if I select other google it will search there isntead of [URL]
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Jul 8, 2011
The combobox is bound via binding source to a table. How can I display the list of look up options while having the first option say [None} and if selected, clears the value from the list.
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Aug 21, 2011
Ok what I have is a combo box with a set of default items but i want the user to be able add new items to the combo box's item list. i currently have a text box and a command button for the user to use to add new items to the list with this code attached
ComboBox1.Items.Add(TextBox1.Text)
when the program is closed the item is no longer in the combo box items list.
so what i would like to know is the correct code to make the additions to the combo box's items list permanent or at least until the user chooses to remove them.
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Sep 30, 2010
I have 3 combo boxes on a form. They are all going to load the same list. This list is in a database. My first thought was to attach the list to the combo boxes as a datasource. That would require me to create the datasource 3 times to load the same list. To me that seems terribly inefficient. If I attach all 3 combo boxes to the same datasource (list object) then when one cboBox value changes, they all change. So my thought is to load the list once into a list object, then create a loop that loops through each item in the list and adds it to the 3 combo boxes.
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May 22, 2011
how do i get items in combo box to appear in a list box
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May 16, 2008
I'm making a program in which I need all the currency codes in three letter words like USD, EUR, YEN etc in a combo box. Can sombody please please please help me in how to do that. I have tried the Culture, RegionInfo etc but I'm only able to get just one code. I need all common codes.
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Dec 20, 2010
How do I list the column name as a choice in a combo box?
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Oct 19, 2009
i am currently creating a program which will draw out a company logo, which uses a picturebox a couple of radiobuttons which selects the type of shape which will be displayed, and a combo box which selects the color of the shape. i am kind of lost with the combo box, like how do i add the list of colors that is in visual studio and make it to automatically show on the combo box, what color to select.
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Aug 29, 2010
Well I'm using VB 2010 and I need my 'Sub Main' coding to start before my forms do. But I can't find the Start Up Object combo list anywhere! I can find a Start Up Form combo list, but (as the name suggests) it only lists my various forms. I need my 'Sub Main' coding to start first!
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Oct 28, 2009
I need to be able to check from code whether the SuggestAppend List (not sure if that's it's proper name, I mean the dropdown that appears when you start typing into a combo whose auto-complete mode has been set to Sugest Append) is currently showing. Basically I'm looking for something similar to the DroppedDown property but applying to the SuggestAppend List rather than the Drop Down. Can anyone tell me what property I should be looking at?
The reason I need this is I need to do some work when a user cancels an edit in the combo by pressing escape. I've trapped the escape keypress but this only represents an edit cancellation if the dropdown list and the suggest append list aren't currently showing (otherwise the escape just closes the list).
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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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Aug 25, 2010
I have been using the combo Box keypress event to capture the enter key when it is being pressed by the user within the combobox. The combo box style I am using is Drop Down. When there are no items in the combo box list the keypress event will capture the enter key. When I add any items to the list portion of the combo box the keypress event not longer captures the enter key. How do I capture the enter key when the combo box has items in its list.
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Mar 16, 2011
the font of the suggest list5 is very small iwant to know how to change it
i tried the font property but it only change the font of drop list
but i want to change the font of suggest list
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