Web Forms :: Listbox Items Not Visible After Databind From DataTable?
Apr 20, 2010
I am in the process of writing a type of shopping cart, to be used to select parts from a database table via a gridview displaying search results. The search functionality works great. I included a textbox as a template field so that users can input the quantity of each item the want quoted. My code-behind file writes the gridview values to a databtable and is supposed to databind to a listbox. However, when I run the page in browser, the listbox items are selectable but not visible. Here's my code:
1. Code Behind:
[Code]....
ASPX:
[Code]....
What do I need to do to make the listbox items visible?
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Similar Messages:
Dec 16, 2010
i used this tutioral [URL] and i change as per my requirment and i got this gridview its working fine
Before:-
I have one problem:-
On going to next row i need to make listbox visible false only this current row listbox only to be shown same on going next row above row listbox will not show and this current row listbox only shown
After: how to do this....
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Jan 26, 2011
if (SearchTB.Text.ToUpper() != string.Empty)
{
SearchLB.Visible = true;
This is how i do when i make listbox not visible when nothing is entered in the textbox but now
I need a solution where if nothing is selected in dropdownlist the listbox will not be visible.
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Jan 28, 2010
Here is the situation I have, I have a repeater inside a Usercontrol. The datasource is a IEnumerable<Investor> Exposed through a UserControl's Property. I have overridden the UserControl's databind event to set the Repeater Datasource before databinding the repeater. When it's not a postback, it databinds find and the events on the repeater item's controls fires up fine. But there is one event on repeater items (Delete Investor) which call back the DataBind of the UserControl after removing the Investor from de datasource. When this Event is called, it does all the work (deleting the investor and so on...) calls back the usercontrol's databind but when (within the usercontrol databind) the repeater is databinded again, the repeater items doesn't update (repeater items for investor not on the DataSource anymore still appears). My ItemDataBind doesn't even fire by then.
[Code]....
and code bedind
[Code]....
I Tried with both the Repeater Item Command and each LinkButton Event to see if it would make any difference, but none worked
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Apr 9, 2010
environment: VS2008 When running below code the DDLKlient.DataBind() appends the whole set of names to the already existing list. I.e. I have 2 sets of names in the DropDownList!Question:? what can I do to prevent appending and just get 1 (one) set of names?? is there any refresh option?
Protected Sub DVKlient_ItemInserted(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.DetailsViewInsertedEventArgs) Handles DVKlient.ItemInserted
Dim connString As String
[code]...
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Sep 22, 2010
I have a simple custom control that boils down to a label and a listbox. Selections in the listbox are reflected in the label as comma separated values. My question is what is the best and simplest way to make the page developers experience of working with the custom control exactly mimic the experience of working with just the listbox - when it comes to working with data. For some reason it feels wrong to simply create mirrored properties in the custom control and forward their values to the internal listbox. A small, perhaps unrelated complication is that the final product has to play nice with the forms collection due to the nature of the host application.
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May 22, 2010
[Code]......
It always displays ONLY 10 items although there are 30 items in the datatable. If i use GridView ALL the 30 items are displayed just fine.
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Jun 17, 2010
I made a composite control that contains a ListBox. I am using the Composite Control throughout my application but I can not bind the listbox in the Compositecontrol. I have setup a Public get to access my listbox in the composite control.
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Mar 12, 2011
I'm running the following query:
' Show which halls they are eligible for.
Dim dbRooms As New pbu_housingEntities
Dim gender As String = Session("gender").ToString
Dim hall As String = CStr(Session("hall"))
Dim selectedRooms = (From sh In dbRooms.Rooms _
Where sh.gender = gender _
Where sh.current_occupancy < sh.max_occupancy _
Where sh.is_available = True _
Where sh.building_name = hall _
Select sh.room1, actual_available = sh.max_occupancy - sh.current_occupancy
)
rptrRooms.DataSource = selectedRooms
rptrRooms.DataBind()
Which, as you can see, is bound to a repeater. Now, it contains multiple values and I'd like to display them in a nicely formatted way, pseudo code below:
<asp:Repeater ID="rptrRooms" runat="server" OnItemCommand="Choose_Room">
<ItemTemplate>
<asp:Button ID="btnChooseRoom" runat="server"
CommandName="<%# Container.DataItem.Room1.ToString %>" Text="<%# Container.DataItem.Room1 %> : Available : <%# Container.DataItem.actual_available %>"
/>
</ItemTemplate>
</asp:Repeater>
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Jan 26, 2010
I am moving an app from Silverlight back to ASP.NET. (Don't ask!) I really liked the ability to highlight ListBox items as the user moved the mouse over the items. I have been Bing'ing all morning and cannot seem to find any way to do this in ASP.NET with an ASP:ListBox. I tried setting the onmouseover event for the list items themselves. But that did nothing.
[Code]....
I then tried setting onmouseover event for the list itself. I can get the event, but I don't know how to determine which item I am over. I only seem to have the selectedIndex. If I am just moving the mouse, I have no selectedIndex.
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Feb 8, 2010
I am not able to give spaces between two items in list box. I tried with css- padding, but no luck.
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Jun 29, 2010
How to get all items from Listbox. i need to load all item from Listbox to my database. how to get collection of item and how to save it into databse.
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Jul 13, 2010
Can you append items to a listbox?
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Nov 16, 2010
I start building asp.net web site for my office. I have a listbox with province ID and name. How do i select all item on page_load?
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Nov 16, 2010
When I have multiple entries with the same id in a list box the selected index is always the first instance of the item. How do I get around this without modifying the id of the items in my list box so they are unique?
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Jan 18, 2011
I'm trying to populate 1000 ListItems in a ListBox.
how to do it. Currently only 100 items are being displayed even though I set the capacity of the ListBox to 1000.
Below is sort of how my code looks like. :)
listBox.Items.Capacity = 1000;
foreach(entity ent in enitityCollection)
{
ListItem listItem = new ListItem();
listItem.Value = ent.Id.ToString();
listItem.Text = ent.Name;
listBox.Items.Add(listItem);
}
entityCollection has 989 records in it.
Code does not generate any error. only that at the end of the loop I only get 100 items mapped to my ListBox.
Is this how the ListBox is designed for?
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Aug 17, 2010
txtquantity.text = lborderlist.Items.Count.ToString(); -> this codes adds how many you have input in the listbox, now i need to know the opposite..
how to remove items from a listbox but it should also counts the how many you have left in the listbox..
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Mar 2, 2011
I have a listview which is served by a database via a dataview. Attached to this I have a datapager. Now, I also have a filter for my listview, which loops through the items and marks them as visible or not visible. The problem I have is, the datapager doesn't seem to take into consideration that some items are not visible. So, I end up with page with no visible items on there, as the datapager thinks they still exist (which they essentially do).
I tried using, instead of visible = false, listview.deleteitem(index), but they don't seem to be removed. I can only assume that this is because the listview is rebinding when deleting the item which is essentially readding the items. Using the delete method I did have to add a handler for the deleting function, in which there is no code:
Private Sub lvItems_ItemDeleting ByVal sender As Object, ByVal e As System.Web.UI.WebControls.ListViewDeleteEventArgs) Handles lvItems.ItemDeleting End Sub
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Oct 24, 2010
i want to create a dynamic listbox where items are links (each item is a hyperlink)
here 's my code:
Using sw As StreamWriter = New StreamWriter(Server.MapPath("~/Output/" & weeknumber & ".xls"))
Dim hlk As New HyperLink
hlk.NavigateUrl = ("~/Output/" & weeknumber & ".xls")...
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Apr 11, 2010
I have three listboxes, lst, lstA, and lstB, in which lstA is an instance of lst. The problem I have is that whenever I remove an item from lst, the same item in lstA is also removed. I have tried assigning a different ID to lstA to no avail. see my code below:
[code]....
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Feb 18, 2010
I've a list box which may contain 300000 or more records. I've another listbox . The user basically selects from the first listbox and adds to second lbx. There is button which when clicked will move the selected records from first listbox to second listbox.
Now if I select around 45000 records and try to move to second listbox .. it moves fine . If I select more than 45000 or so...it takes very long and eventually i get the "Action Cancelled". When I put a break point in page_init ..it does not hit. Is there a way I can restrict the user by selecting more than 40000 items. ie they should not be able to highlight more than 45000 records.
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Aug 12, 2010
I have a dataTable that contains a specific column from a database. A listbox contains 100 list items in it. When page loads, I need those listbox items to be selected, whose value matches the value in the datacolumn of the datatable.
Following is the code i tried, but is not working. For some reason, it selects only the last item in the datacolumn.
if (datTableRelatedSchool.Rows.Count == 0)
{
}
else
{
foreach (DataRow row in datTableRelatedSchool.Rows)
{
foreach (DataColumn myCol in datTableRelatedSchool.Columns)
{
lstRelatedSchool.SelectedValue = row["RelatedSchoolPK"].ToString();
}
}
}
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Jan 26, 2010
I'd like to select ListBox Items by using any text. I mean like below For example, Text1.Text = "Item1, Item3, Item5" ListBox's Items are Item1, Item2, Item3, Item4, Item5. Selected ListBox Items will be Item1, Item3 and Item5. Here, I try to find the build-in function that count ',' in any string. How to code?
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Sep 21, 2010
i want to show the arrayliust items in the listbox, for that i had stored some data in array list, and now i want that if i gv any id which is in the array list its corresponding details are displayed in listbox. I had two fields ID, Name, and when i give id its corresponding name should be shown in list box.
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Feb 16, 2010
I'm using a listbox to save multiple selected value in db. I'm saving that values by seperating comma(,). In edit option i want to reterive the same value from db and want show multiple selected items in listbox.
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