Forms :: Re-triggering A Combo Box?
Aug 6, 2009
I am using a Combo box control to select from a list of Databases, and when one entry is selected I display a listbox of certain objects in the database.Other controls are then used to filter the list based on either name or content.Now, I want to know how to Re-load the original list based on the current combo box selection by using a 'Reload' button.In the button code I am setting focus back to the combo box, but whatever I try I cannot make the list refresh again. I've tried Select, SelectedItem, Text and Find methods but nothing works.How do I reload the listbox without having to manually use the drop-down and select the same item again?
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Dec 9, 2011
This is a spin-off post from another issue I am working on. The problem is related to triggering event handlers when the user makes an input into a combo box, you might even call this a complaint.I have a combobox with a DataSource and ValueMember and DisplayMember. There is no DataBindings to worry about at this point. The combobox is DropDownStyle = DropDown and I havealso enabled AutoCompleteSource = ListSource and AutoCompleteMode = SuggestAppend.The datasource contains a list of Countires, and when the user types in an entry or chooses an entry from the combobox, I should be able to detect what the user has selected ortyped immediatley after the selection, some would say it's the very purpose of the combo box.Which event would you choose to deterine what the user has entered or Selected? few events come to mind:
SelectedValueChanged
SelectedIndexChanged
Validating
[code].....
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Nov 1, 2011
I'm having a strange problem with the OnClick event. In an ArcGIS application using VB.Net, I have a button set up with the following
AddItem("CommandAnalyseResults")
The following module segment contains the OnClick event: Public NotInheritable Class CommandAnalyseResults
Inherits BaseTool <more code...>
Public Overrides Sub OnClick()
[Code]...
The OnClick event gets triggered no problem the first time I click on the button. However if I then close the window the button code creates and then click on the button again, the OnClick code is not triggered.
If I click on a different button then click back on the 'problem' button a 2nd time, it does seem to trigger the code!
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May 27, 2011
how do i program by saying if a certain item is selected in a combo box then that item will not appear in a second combo box. i have this code for now but it does not work
[Code]...
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Feb 8, 2009
I'm trying to get the text portion of the combo box when a value is selected. I can get the selected value, but if I look at the selectedText or Text property the value is "".
I'm using the following
Private Sub cboVendorSearch_SelectionChangeCommitted(ByVal sender As Object, ByVal e As System.EventArgs) Handles cboVendorSearch.SelectionChangeCommitted
clsVendor.ID = Me.cboVendorSearch.SelectedValue
[Code]....
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Apr 14, 2009
i have an xml file that looks like:
<?xml version="1.0"?>
<ROWSET>
<ROW>
[Code]....
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Apr 21, 2009
I have a binding source, a Data Table, a Table Adapter and a combo box. How to fill a combo box using these parts? When I fget done I am Showing System.Data.... Example.JPG
[Code]...
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Sep 27, 2010
ok, got a question here, two really. first i'll ask the hard one, as i think i have my other one out of the way so i'll save it for later but i made a program where a user enters in dimensions in several text boxes in inches. there are radio boxes that the user decides what thickness of wood they would like to use. what i'd like to do is add metric into the program and use two combo boxes. one combo box drops down and you can select inches, centimeters, or millimeters. the other one drops down to choose the thickness of the wood.ok now here's my question. say i pick inches in the first combo box, i'd like the second one to display only the thickness of the wood in inches, no metric. if i pick centimeters, i'd like the second combo box to display the thickness of the wood in only centimeters, no millimeters or inches. and the same goes for millimeters.i also have the program on a timer that runs at 100 milliseconds so the user can quickly see the differences in dimensions they put in instead of having to hit the calculate button over and over and over (not sure if that really matters or not, had a couple issues with the boxes earlier but don't think it was timer related now)but is this possible? basically just looking for the kinds of drop boxes that you see on a page like autotrader.com where you select dodge, and then only the dodge cars are listed, select chevy and the chevy cars are listed, etc.
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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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Aug 28, 2009
i am using vb.net 2005 to developed desktop application ,I am having two windows form user control , the first control name con.vb containing the design and code for connecting to database and getting a list of my project values in combo box.Now the second user control report.vb which i am using to generate some reports , since the code behind is using connection to connect to various project database , so i want to get the value of First user control into another how i can get the i have tried the below but its giving me error in run time but no error in design or code behind [code]
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May 23, 2010
I want to hide an item in a combo box with out changing indexes of other items..the collection of the combo box is hard coded. ex: if I logged as a username ABC then combobox shouldn't have a item called ABC and want to remain other items' indexes as previous.
i can't use cbxOption.Items.RemoveAt(index) becouse indexes will change.
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Oct 24, 2009
I've got this question while i'm searching the web for my problem.It's the same as mine ..I have a datagrid of three columns;
1. Comb-box1 : Employees' Names (DataSource : EmployeeBindingSource)
2. Comb-box2 : Coming Departure. (DataSource : DepartureBindingSource)
3. Text-box : ...............
* How can I filter or re-bind the source of the second one as the first one value changed (Both are in the same datagrid).>> So as I select an Employee I need the second one gives me just the specific departures of the desired employee.Where I have the (Employee_No) field connect the two tables related to each one.
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May 23, 2011
how to program by stating if the first item in the combo box is selected then
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Apr 23, 2009
i searched for stuff to load files/forms, in this case forms from a combo box... this is what i have so far, except it doesn't do as it should..
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Select Case ComboBox1.Text
[Code]....
also, is it possible just to click the item in the combo box and have it automatically load up the form?
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Oct 15, 2010
i try to bind database to combo box but having (Object reference not set to an instance of an object) error during the running.
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Sep 17, 2009
I'm trying to figure out how to change the background color of a combo box for every item in the selection.[code]This method seems to set the whole combo box back color to whatever the last color was.The color does not change per item.
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Aug 11, 2009
the following code will update the combobox list with new entries and even move repeated entries to the top of the list. I want to save the list so that the next time a user opens the program, the previous list appears in the combobox. Not sure how to accomplish that.
Private Sub btnCheck_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCheck.Click
're-declare "strComputer" to get value from combobox "combComputer"
Dim strComputer As String = combComputer.Text[code]....
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Jul 24, 2011
I've created a form to handle "frequently asked questions". In the form I have five Drop-Down Combo Boxes and I want the user to be able to select one of the questions listed in the drop down boxes and have it return a "message box" with the answer to the question. Naturally I'll have different "answers" for each question, but my initial efforts have me getting my message box as soon as I click on the drop-down arrow itself, and I don't want that triggered until I click on the specific question.
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Sep 1, 2010
I'm trying to use:
SelectedIndex = 0 to select the 1st. item of a combo box. Instead of displaying a customer name the combo box shows "System.Data.DataRow"
It works if the user actually selects something in the combo box but I would like to do this in code.
get the customer name to display in the combo box?
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Jan 12, 2010
i wanna create an app which can take information and make notepad file of that data. Users can make any number of notepad files they want. The prbolem: i want to show all the users files in combo box whic i did it. but i don't know how to make that file show when user clicks on that name . here is the code of mine.
[Code]...
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Jun 3, 2011
I am wanting to change my startup form for my application in Visual Studio for VB.Net. I double clicked "My Project" in the Solution Explorer and then clicked on the Application tab. For some reason I only see 12 forms out of the 6 forms I have in my project when the "Enable Application Framework" check box is True. When the check box is False I see all my forms, why?
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Jan 17, 2010
I'm building a form with just a combo box in it that contains a list of other forms that I made. I want to program the combo box so that if a user opens it and clicks on "Web Browser", that form with the combo box will close and the web browser that I made will open. Another example is that if a user selects "Media Player" from that combo box, the form with the combo box will close and the media player that I made will open. How would I program the combo box to do this?
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Jun 2, 2010
I have 2 combo boxes. One is in a form called subcat_selector.vb
on the button Pick Sub Catagory.click event it shows the subcat_selector form. form there, the onload event:
Dim button As DialogResult
[Code].....
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Mar 2, 2010
This is the contents of the text file:[code]I have a combo box on a form and I want to bind some of the data from the text file, the stuff highlighted in bold, to the combo box.
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May 2, 2011
i want to load customerID and customerName in a combo bom. ID will be invisible and name will be visible in column using visual basic 2008 for windows application.
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Feb 20, 2010
How can we add a list to a combo box from a txt or excel file when entering an account number. the details must only be displayed for each defferent acount information. for example. account no 3332 must show a name and telephone number in to separate comboboxes. although it must contain lets say 4 telephone numbers and 4 names that are located in a text document.
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Sep 27, 2009
In a windows forms project, I have several combo boxes. The first combo box contains a list of objects. Those objects then have several lists which are used as the datasource's for the successive combo boxes, depending on which item is chosen in the first.
[Code]...
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May 1, 2010
I have a form that is bound to a table of data. I have a typical binding navigator. When I go to a different record such as next, previous, first or last I need a subroutine named "LayoutAdjust()" to execute "after" the new next record data is loaded on form. I tried calling the subroutine in the "BindingNavigatorMoveNextItem_Click" action but it executed the procedure before the next record data was loaded
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Mar 18, 2009
I currently creating a form to read .csv from floppy and show the data into textbox. But my problem is after i ran the application my pc not stop triggering the floppy drive. The indicator always light up even after i close the application. there any additional code i need to add to my existing code.Im using VB Express 2005 and This is all the code i use.
Dim oXLApp As Microsoft.Office.Interop.Excel.Application
Dim oXLbook As Microsoft.Office.Interop.Excel.Workbook
Dim oXLSheet As Microsoft.Office.Interop.Excel.Worksheet
[code].....
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Dec 12, 2009
I have two richtextboxes, richtextbox1 and richtextbox2 on top of richtextbox1 with richtextbox2.visible = false on form load. Whatever is input in richtextbox1 is placed in an array when rictextbox1 loses focus. Now I have a checkbox that when enabled, hides richtextbox1 and shows richtextbox2. On the first time richtextbox2 is shown, i want it to display the contents of richtextbox1. This is achieved by setting a boolean flag (firsttime=true) on form load, then in the checkbox code if firsttime = true, it displays content of richtextbox1 and sets firsttime to false.
[Code]...
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