Asp.net - Creating A Dynamic Dropdown, After A Selection Has Been Made
Oct 6, 2011
I am trying to create a dynamic dropdown after a dropdown has been selested (in asp.net vb)
For example: I have a dropdown question that asks: What brand of car do you drive (Toyota, Ford, Honda, Nissan, Chevrolet)
When the brand is selected I want another dropdown to appear under it with new chocies
For example: If Nissan is chosen, the second dropdown will be populated (from the database) with (Altima, Maxima, etc...)
And in some cases I would like a text box to appear, but If I can figure out the dropdown portion, I am sure I can figure out the textbox.
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Nov 2, 2009
We have a GUI that displays a radio selection box (3 options) that are the three sites where our hospitals are. We need to dropdown located on the form to fill with only the locations based on the selected radio option.
Here is the code behind we have so far (sorry, VB)
[Code]....
For the record the Location dropdown is currently databound but its a static SELECT statement which brings us all the locations but we'd prefer it to be cleaner if it only returned the locations based on Site. We are using Visual Basic 2008 Express Edition for development.
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May 29, 2009
I know the question is a little choppy and perhaps misleading,but I have a gridview with dropdownlists on the rows. I created an AddHandler and a Delegate for the SelectedIndexChanged and it gets to the sub. Here is the code for that:
AddHandler ddlmgr.SelectedIndexChanged, AddressOf ddlmgr_SelectedIndexChanged
Public Delegate Sub DropDownList_SelectedIndexChanged(ByVal sender As Object, ByVal e As DropDownList_SelectedIndexChanged)
Protected Sub ddlmgr_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs)
End Sub How can i get the row's Id if GridView_RowCommand is not called?
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Sep 3, 2009
I have a list of servers in the first dropdown. I want to get list of all databases in the second dropdown depending on the server selected in the first dropdown.
For this I need to query each server while selecting the server.
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Mar 1, 2011
I have a relatively simple application that uses a series of combo boxes to ask questions. These combo boxes are bound to a table with 2 columns in it "RSN" and "RSN_ID". I'm using one table adapter to feed the form (and these boxes) once the main form is loaded. The problem I'm having is when I change one of the boxes, they all change to the same value, almost like they have the exact data source (which they do) but shouldn't you be able to make different selections even using the same table adapter? I have to run 20 queries at loadtime, or create 20 table adapters.
My current setup is like this:
Data Source: table that feeds the combobox
Display Member: RSN (from combo box table)
Value Member: RSN_ID(from combo box table)
Selected Value: Form's main binding source, unique to each combo box, where the selection is actually saved.
This works perfect when using one combobox, but as soon as I bound all of them I ran across this...
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Feb 23, 2011
I am currently using the NorthWindDataSet from the msdn tutorials.So far, here is what I have to populate one of the listboxes on my form:[code] I make a selection in ListBox2 I would like ListBox3 on my form to be populated with that particular person's Order #'s.
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Jun 26, 2009
I'm curently trying to get information displayed in a listbox from a selection made in a datagridview. For example a user selects an artist from the treeview control and it displays all the albums by that artist in the datagridview. Once a user selects an album all information for that album is displayed below the datagridview in either a listbox or listview control. I've tried dragging the conrols from the datasource and it' won't drag onto the listbox. What do I need to do to get it so that it will display album, artist and track information?
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Dec 16, 2009
I am currently pulling data from a database into a comboBox. My intent is to have the description of the selected option in the comboBox displayed in a listbox. How to i get this data to be displayed in a listbox?
Here is the code that I have so far:-
Imports
System.Data.SqlClient
Imports
[code]....
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Feb 26, 2010
I have a DGV with a CB column in VS2008. I would like an event when a DGVCB selection is made (without leaving the cell). It will probably have to be a DGV cell or row event but I can't find one that fires as soon as a DGVCB selection is made.
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Jul 9, 2010
I'm using devexpress ASPxComboBox, however I wanted to know how I can allow the user to enter values(in case it is not in the list) or choose from a dropdown list.
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Apr 20, 2009
how can I make program using vb 2005 that will dropdown the datagridview combobox and display to the datagridview textbox everytime the combobox selection change or when you choose the data.The mousemove is not perfect because when the dropdown combobox length more than the datagridview, the mousemove will not work even other features of datagridview.
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Mar 12, 2012
I am reading data from a mysql database table.I have populated a dropdown with the relevant slections, i want the rest of the form to load data once i select the plate number .[code]...
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Sep 2, 2009
I am fairly new to VisualBasic .NET (2008). I'm creating an application that, when a number is entered into the textbox, a new form window is created and populated with buttons. Each button starts the same command, but with a different parameter (the parameter being the pertinent record number found by the search).'The records are asset tag numbers.The procedure works fine if there is only one result.But the search allows for partial numbers and that's where the trouble begins.If two or more results are found, each button is configured with the last number found. The button being clicked doesn't tally with the proper ID number.[code]
What I didn't count on was that the event is only called when a button is clicked. When buttons are made, they are not assigned at that time.I've had problems trying to carry over the (current value) for pcArray(i), hence having it populate that form3_text field. When trying to add in a second object to be passed, I get the following error:"Method prtivate sub DynamicClick(sender as object, pcNameInfo as object, e as system.eventargs) does not have a signature compatible with delegate sub event handler with delegate 'delegate sub eventhandler(sender as object e as system.eventargs)."I tried manually entering a "Delegate sub eventhander" with the pcNameInfo object and VB 2008 ignores it.What can I do to get each newly made button to be told to run the RemoteIn(pcArray(i)) process properly?
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Apr 16, 2011
I have a table (applicants) and using a GridView various individuals will be making changes to the values in this GridView. I've created another table (history) which I would like to use to log these changes. Right now I have this to capture the changes:
[Code]...
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Aug 8, 2008
Is the ContextMenu control strictly to offer choices when the user right-clicks some object, or can it be used to offer choices in general?
In my situation, when a user opens a certain type of file, I want to offer a selection of specific subfiles (line ranges) within said file as choices. The presence of subfiles and their number is variable, so this would be a dynamic situation. (No subfiles: use the whole file; three subfiles: present three choices ...)Would ContextMenu be appropriate, or should I offer a list box or combo box or frame of radio buttons instead?
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Sep 18, 2011
I have four comboboxes in my Ist form related to course as.c_type,c_stream,c_major,c_nature.......combobox c_type contains the type of courses like degree,diploma, PG etc,similarly "c_stream" contains stream like engg,medical etc. further c_major contains all courses like computer engg(CE),mechnical(ME), physiotherapy etc. and last c_nature has course nature whether regular or private or distance.Now situation is when i select diploma from c_type, corresponding options must be populate in c_stream like engg. And now when i select engg., CE or ME must be there in c_major combobox .Same is for C_nature.The all 4 combobox must show "please select" text on form load event..i also have 2nd form where i have same combobxs. so is there any way to call the same code without again writing that to 2nd form.
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Jan 15, 2012
Using VB.NET I created an excel sheet with list of items in dropdownlist.[code]But i can able to view the listbox upto "testing", rest of the items are not diplayed in the listbox why?Is there any limit for dropdown list items, If so how to increase the limit?
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Mar 3, 2011
I have a working dropdown box that gives the answers yes & no.When "yes" is selected I need to create a message box that displays a simple message and allows the user to click ok, to get back to the survey.I have been working with it, and tried several things but no luck. What would the code look like, and where exactly would I place it to fire at the right time.I am working in VB, with an aspx & aspx.vb page.
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Feb 4, 2011
I am creating an excel file and have to add a dropdown list to a cell. It looks like I need data validation, but my attempt errored on the .Add line.
With wkbSheet.Range("H" & rowCt).Validation
.Delete()
.Add(Type:=Excel.XlDVType.xlValidateWholeNumber, _
[Code]....
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May 6, 2011
I am dynamically creating and adding dropdown controls to DevExpress XtraGrid.That works fine and I can add a dropdown control to any column I wish.My main problem is that I need to have the first element in the dropdown control displayed. But after I dynamically add 3 dropdown controls to the grid, only the last one has the element displayed. The previous two do not.Although, I add the elements
this is what the code looks like:
vb.net
Dim column as DevExpress.XtraGrid.RepositoryItem.GridLookupEdit
For i as Integer = 0 to dsSometing.Tables(0).Rows.Count - 1
column = New DevExpress.XtraGrid.RepositoryItem.GridLookUp
[code]....
The code will go tru and add lets say 3 dropdown controls, set their .DataSource to datasets I need, but it will only show .NullText of the last added control.
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Apr 3, 2010
How can I create a contructor for this.I have a constructor already in my class as follows :
Public Sub New()
Text = "Hello World"
TextFont = New Font(System.Drawing.FontFamily.GenericSansSerif, 10, FontStyle.Italic)
[code].....
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May 16, 2010
At design-time, when one clicks a control it is selected and this state is depicted with a frame drawn around the control. I would like to know how can I mimic the same effect at runtime; that is, how can I draw a similar frame around a control when the user clicks over it?
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Nov 5, 2011
I have a VB.Net WinForm Program. I dynamically create panels with controls.Each panel has:
2 Labels
1 DataGridView
1 Button
Everything works fine the first time I create the panels.
Everything gets created, and everything is functional.
If I have to re-create the form, I get rid of the existing panels (and their controls) with this code:
[Code]...
When I re-create the panels, I get the panels and all of their controls except Buttons.When I step through the debugger, I see the buttons being removed, and I see them being created, but they don't appear in the panel
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Oct 16, 2009
i want to create a modalpopup dynamically but i come across a problem.I pasted my sub here and i dont know what to do for that problem.When i want to show modalpopup,it says "Control 'mdldelete2' of type 'ModalPopupExtender' must be placed inside a form tag with runat=server."
Public Sub Raise_Alarm(ByRef p_Page As Page,
ByRef p_AssignedButton As System.Web.UI.WebControls.Button,
ByVal p_Message As String)
[Code].....
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May 16, 2011
I am trying to access VB.Net exe on a client system through LAN.Its working fine for server with static IP address.In case I try to access it with server having dynamic IP address, It doesn't provide access(config file containing server name).
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Jan 4, 2012
What im trying to accomplish is I have a table which im creating dynamically and I want in the first tablecell a radiobutton, second tablecell first name, third tablecell last name.The second and third tablecell work fine but having trouble with the radiobutton. Im making it a radiobutton list b/c only one name should be selectable. Below is how im creating the radiobutton list. I have omitted the second and third tablecell as its working properly. The yesNo variable is used to say i
tblrow = New TableHeaderRow
tblcell = New TableCell
If yesNo = "yes" Then
[code].....
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Nov 19, 2011
heres my code i have it set up so when i press spacebar it should create and display a picture box my help is two parts one why is the picture box not displaying and how to i set it so that every time the space bar is pressed a picture box is created. The second part to that is how do i create a timer with that picture box that makes it move, i know how to make a picturebox move im just not sure how to do the for each statement to set a dynamic name and how to use the timer to affect it...
Private Sub Form1_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
' Sets Handled to true to prevent other controls from
[Code].....
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Sep 20, 2009
[URL]..And put into a dynamic array where each month represents a record in the array with 3 given with C/P, Strike and Settle
The criterion is for every month grab all C/P that have matching strikes thus returning the following for every month. See data below and what I would like to return below. Want to use excel VBA to return the values from array into a sheet in excel. See data below
[Code]...
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Jan 9, 2009
I am writing an application that requires button controls to be created at run time because the amoutn of controls created depends on data retrieved from a database.
I believe I am creating the control properly but I am not capturing the click event.
Code example:
Dim myButton As Button
myButton = New Button
myButton.id = "id"
[Code]....
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Jan 2, 2012
I need the ability to create a dynamic number of hotspots in an imagemap the pseudo code for what I want to do is below:
Protected Sub AddHotSpot()
Dim r1 New RectangleHotSpot
For Each Item as datarow in dataset
[Code]....
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