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]....
I need a program that lets me enter the name of an item to swap and adds it to an array list when a button Add is pressed.
Once the item is added to the array list a sub procedure should be called which displays the contents of the array list in a list box.
The system will also allow me to remove items from the array list and then the list box is updated.
How do you go about removing multiple items from a array list?
I'm using the RemoveAt() method to remove but doing that resets the ArrayList's index which cause me problems if the user selects to remove 1 & 3 out of a 3 list array since once it removes 0 the array list now just has 0 & 1.
I have a list of objects that have values to them. Specifically one of these values if a boolean (isAbnormal) to determine whether or not the value itself is classified by our application logic as "Abnormal" or not.
I have composed a list of a mixture of abnormal/not abnormal items. I want and need to remove items from this list that aren't clsasified as being abnormal (in programming logic, isAbnormal will be false)
I have tried several ways and can think of some dirty/ugly ways to get it, but there has to be something better:
[Code]....
I have a listbox (UsersListBox) which shows all the users and a gridview (gvRoles) which shows the users' roles when their username is selected in UserListBox. gvRoles is below. When I click the buttonfield in gvRoles, I'd like for my OnRowDatabound event to call up the gvRoles_RowDatabound method. I'm trying to get this method to remove the username selected in UserListBox from the role in the row clicked. How do I go about that using the roles and membership classes?
[Code]....
using asp.net 4 and vs 2010 I have a listview that displays data from a database. I have to configure it to display all column data where present, however, not all columns have data, with the result that blank spaces get rendered where this data would normally be displayed.
The code:
[Code]....
So, for example, some of the individuals that exist in this table might no longer be associated with a specific department, institution or have data in the "Address2" column.
I am trying to get a simple multi-page program to run correctly. I have everything set up, except for the "remove" function. When I try to remove an item from the list box nothing happens. Insted of trying to explain it I will show you the code...
Index
Code:
[code]....
Another niggling issule. I am trying to remove all the databound items from my listview but it doesn't work. I am trying to remove the items as i have used the delete command button (alongside with the updateand edit)
I have tried.
listview1.items.clear();
listview1.datasource = null;
listview1.databind();
But none of these have worked. I have also tried removing the item via it's index.
i've a songs website, where i'm adding items to cart for users who are logged in, but when a song is deleted from the website the users still have the cart info still intact, i'd like the songs in the cart also too be deleted when the song from the website is gone, how may i accomplish this ?
View 1 RepliesI 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.
I am not able to give spaces between two items in list box. I tried with css- padding, but no luck.
View 6 RepliesHow 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.
View 3 RepliesCan you append items to a listbox?
View 13 RepliesI 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?
View 2 RepliesWhen 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?
View 2 RepliesI'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?
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..
I've been at this same question in different forms now for a while (see e.g. Entity Framework and MVC 3: The relationship could not be changed because one or more of the foreign-key properties is non-nullable. ), and it's still bugging me, so I thought I'd put it a little more generically:
You have an entity object (using Entity Framework), say User. The User has some simple properties such as FirstName, LastName, etc. But it also has some object property lists, take the proverbial example Emails, to make this simple. Email is often designed as a list of objects so that you can add to that object properties like Address and Type (Home, Work, etc). I'm using this as an example to keep it generic, but it could be anything, the point is, you want the user to be able to add an arbitrary number of these items. You should also be able to delete items (old address, or whatever).
Now, in a normal web page you would expect to be able to add these items in the same View. But MVC as it seems designed only makes it easy to do this if you call up an entirely new View just to add the address. (In the template for an Index View you get the "Create New" link e.g.).
I've come across a couple of examples that do something close to what I mean here:
[URL]
and
[URL]
The problem is, although the sample projects on these sites work fine, with mock model objects, and simply lists (not an object with a child list), it's a different thing if you actually want to do something with the posted information - in my case save to database through the Entity Framework model. To adapt these cases to that, all of a sudden I'm in a maze of intricate and definitely not DRY code... Juggling objects with AutoMapper and whatnot, and the Entity Framework won't let you save and so on (see above link if you're interested in the details).
What I want to get at is, is it really possible that this is such an uncommon thing to want to do? Update a child collection in the same View as the parent object (such as the email addresses in this case)? It seems to me it can't be uncommon at all, and there must be a standard way of handling this sort of scenario, and I'm just missing it (and no one here so far has been able to point me to a straighforward solution, perhaps because I made it too abstract with my own application examples).
So I have a number of dropdown select list controls populated as part of a repeater. They might contain overlapping data, meaning that the first d d list control will have selections:
a
b
c
Second one:
c
d
e
Third one:
d
e
h
and so on.
So what I would like to do is to srart removing the duplicate items from the reset of drop down controls once the user starts selecting those. I intend to use jQuery for this.
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")...
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.
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();
}
}
}
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?
View 3 Repliesi 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.
View 3 RepliesI'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.
View 9 Replies