Programmatically Add A Drop Down List In Asp.net With Specific Pre-selected Item?
Nov 30, 2011
I've worked out how to create a DropDownList using the following code: <select id="salesPersonDropList" runat="server"></select> In my .aspx page, then my code behind loops through database output running:
Dim newListItem As ListItem
newListItem = New ListItem("Title", "Value")
salesPersonDropList.Items.Add(newListItem )
What I can't figure out is how to programatically set which of the List Items created is the one to be pre-selected in the rendered DropDownList, ie, how to create what I'd write in HTML as:
[Code]...
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Jun 18, 2009
i want to stop accepting form drop down listbox if certrain criteria is not met [code]how i can cancel the selection of drop down list?
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Feb 12, 2011
I'm having some difficulty with a sorted & grouped listbox in WPF vb.net 3.5 that has an items source bound to an ObservableCollection.
What I want to be able to do is to retrieve a piece of data from the ObservableCollection items source depending on what item in the listbox the user has selected.I've almost got it working but because the listbox is sorted it does not match the index of the items source.
[code]...
As I previously mentioned, because the lstBox is sorted and also grouped the index's don't match up.Does anyone know how I can get the correct information I want from the List Source depending on the selected item in the list box?
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Sep 3, 2009
i want to be able to drag and drop list view items
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Nov 15, 2011
i'm new to vb.net.is it possible to link item in drop down list to image? for example if i click "computer" in the drop down list, the image of the computer will appear. sorry if my question sounds silly. i'm really a newbie in vb.
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Feb 28, 2011
i seem to have a problem when i try to select a ComboBox item which is a drop down list. The ComboBox contains a list of various items where the user can select from a list, the type of query he/she would like to perform on an Access Database. Two of the items in the Drop Down List are "Employee Sales Between Specified Weeks" and the other item is "Employee Sales Between Specified Months" (without quotation). Now in my VB code, i have a really long If/ElseIf Statement which includes all the options the user can select. Additionally, if the user has selected a week query, he/she must select a From Week, a To Week and a Year (for example week 3 to week 5 year 2009). From Week is another combobox (1-53 weeks) and To Week is also another ComboBox (1-53).When the user selects a month query, he/she should select a From Month from a ComboBox (1-12) and a To Month from another ComboBox (1-12) and the year from the same Combobox (e.g 2009).
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Aug 30, 2010
I am new to VB and what I would like is for the user to pick a item from the drop down box and from there; there would be a list that pops up to the side with that users pick list of attacks. I am trying to do this for every item in the drop down box. So, when the user changes character type it automatically changes the list to what the user picked. Below is two pictures one with the ?amazon? picked and the other with the ?sorceress? picked. To give you an example of what I am trying to do. My question is what the best way of doing this?
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Jul 19, 2011
I want to select many items from the listbox in vb .net i. e i have the following code:
For i As Integer = 0 To Me.lstdep.Items.Count - 1
If dt.Rows(0)(3).ToString.Trim = Me.lstdep.Items(i).ToString.Trim Then
lstdep.SetSelected(i, True)
End If
Next
running the above code i can select only a single item from the sql server 2005.But i want to select multiple items which are seperated by comma in the back end ....
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Jun 12, 2010
I have one listbox an import button and a save button. Basically the import button allows the user to select photos and he list box then shows the directory for them. Is there a way to save the image that has been selected to a different place? whilst at he same time changeing the file name.e.g. the list box would have the directory like this "c:documentspicturesimage1.jpg" I would then like to save this file like such "c:desktop est103.jpg"
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May 17, 2007
I have 2 drop down lists and 1 submit button. It works such that after the user has selected values from BOTH the drop down lists, then the user will click a "Search" button. My problem is, after the user click the "Search" button, the second drop down list is no longer displayed with the selected value, instead it displayed a default value. May I know how can I make sure the selected value remain selected even after the user clicks the "Search" button on the page?
For your info, my coding goes as
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim strSelectedUsername As String
[Code]....
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Mar 25, 2010
What I want to know now is how to drag item from list view and drop it in image box.. with drag icon.I used to use vb.6 there is a drag icon.
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Aug 3, 2010
i have a sub that checks all drives on a computer;
Dim getInfo As System.IO.DriveInfo()
getInfo = System.IO.DriveInfo.GetDrives
For Each info As System.IO.DriveInfo In getInfo
TextBox1.Text = TextBox1.Text & info.Name & vbCrLf
Next
this shows all drives in textbox1. now if i select the drive i want, i can then check the free & total space with this sub;
Dim cdrive As System.IO.DriveInfo
cdrive = My.Computer.FileSystem.GetDriveInfo(TextBox1.SelectedText)
TextBox2.Text = TextBox1.SelectedText & " has " & cdrive.TotalSize / 1024 / 1024 / 1024 & "gb total space" & vbCrLf
TextBox2.Text = TextBox2.Text & "and " & cdrive.TotalFreeSpace / 1024 / 1024 / 1024 & "gb free space"
all this is good if i select the drive i want to check. but if i only click the drive, since no text is selected, the second sub does not work.is there a way to check at which index the cursor is, grab the item of the index, and pass it to the sub so i don't have to select the text itself?
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Feb 20, 2009
after selecting an item from a drop down list the focus can move to a button control with example code in .Net
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Jul 13, 2011
for example i have a structure class and obviously created a new list as so. My UserControl creates the new car.
[Code]...
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May 31, 2009
can't seem to find the answer to this anywhere.I need to know how to add an item in a list box above the currently selected item. I know there is a RemoveAt function which removes selected but is there any way to control where an item is added?
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Jul 2, 2011
I have a list box that contains some values. I want to checked just whether any of the item from tha list has been selected or not? If selected output should be true otherwise false.
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Nov 10, 2009
I'm trying to figure out a code to do the following:If the item is found in the list box, make the item in the list box selected.
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Nov 23, 2010
I'm having a problem with a program I am re-making. I used to be quite good at this stuff but I stopped and now I've pretty much forgotten everything. In hopes of gaining my knowledge back, I wanted to remake a program I made years ago but I'm having a problem.
I'm trying to split a selected item in a list box. This is what the item looks like:
|DATA|DATA|DATA|DATA/ELSE|
I can split it fine using this code:
Private Sub ListBox1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListBox1.Click
Dim LineofText As String
[Code].....
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Feb 14, 2011
in VB10 Express is there a way to verify that something in a list box has been selected BEFORE an action can be taken? I was debugging and found an unhandled error when I accidentally told the program to do something, but there was nothing selected.
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May 30, 2012
Hi is there a way I could keep the highlight of all selected item in list view. every time listview lost focus it's gone?
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Feb 24, 2011
I'm currently creating a tabbed browser. Everything works fine as i expected. When it comes to history, I'm excepting a difficulty to navigating items from list view.
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Mar 15, 2011
I am trying to select an item in the listbox (e.g. January) and retrieve the number of days to display in the label. Have listbox (listMonth) created but cannot seem to add the data ("31") to show in the label box(lblDays.text) when January is selected.
Public Class MonthDay
'Declare global variables
Dim Jan As String = "31"
Dim Feb As String = "28 or 29"
[code].....
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Mar 7, 2010
I have a comboBox that is populated with a dataset. The values are:
KG - Kilograms
LB - Pounds
and so on.
So when the user clicks the comboBox in the DropDown the user will see:
KG - Kilograms
LB - Pounds
and so on.
[Code]...
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Dec 10, 2009
I have items in a listbox. the user have to select one item(its mandatory) and after have to click next button to proceed to the next form. in the second form the selected item should be displayed in a label.
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Oct 16, 2009
I have created VBA form in which I have list box and few buttons. I want to handle the enter key event when some one has selected some item from list box and pressed enter. If I can make some specific button click event default for enter key then also fine.
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Feb 9, 2011
My listbox is bound to a datatable. The listbox is initially set to not show any data using selectedindex = -1.I have a second listbox that populates based upon the entry selected in listbox1. I use the Bindingsource PositionChanged event to populate the 2nd listbox.My problem is when the 1st entry in the listbox is selected the PositionChanged event does not fire, because the row selected is the default current position of the bindingsource. Can the Bindingsource be set to a "Null" position, I tried Position = -1 and that has no effect.
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Mar 22, 2010
i have a listbox (listbox1) which is populated via the user selecting a folder and the listbox1 displays all the subfolders of that folder, and a second list box (listbox2) which display all the files within the folder selected in the 1st list box.
And i have a checksum scanner on the same form, which when the 'scan' button is clicked i want to scan the listbox2 selected item, but i cant seem to get it working, heres my
Private Sub scan_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCrc.Click
Dim c As New CRC32()
[Code]....
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Aug 11, 2009
[code] I am trying to append the name of each checked list box item selected to the end of the current directory but i am obviously doing something wrong.
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Jun 8, 2012
VB.NET Winforms Application... When a user starts typing in the search box of the application it automatically populates the name list dropdown box with the valid results and sets the droppeddown value to true... Everything is working fine except the fact that the user is forced to select a value from the name list or press the esc key because without doing so the mouse cursor just disappears and you have to move the mouse all the way outside the application for it to come back and it will only do so while outside the applicaiton.. Below is the code that I am using for this and it should be noted that I am using the droppeddown value else where in the application and none of those instances have an issue its only this one..
Private Sub u_lastName_Box_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles u_lastName_Box.TextChanged
u_nameLook_Box.Items.Clear()
[Code]....
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Nov 22, 2010
there's a list-box with items, and say you want to modify an item in the middle of the list. You select that item and click "Modify" button and a new form appears with the previously selected item data from first form ready to be modified in a text-box. After modifying and clicking Ok the second form suppose to return that modified string to the first form and insert the modified string into the same spot instead of the originally selected item, so it looks like it was edited to the user.
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