Remove An Item From A Dropdownlist?
Mar 7, 2011I have a dropdownlist, and in some cases need to remove an item (in the code-behind). I need to remove the item based on the value of the item.
View 3 RepliesI have a dropdownlist, and in some cases need to remove an item (in the code-behind). I need to remove the item based on the value of the item.
View 3 RepliesBased on the image, how to select the value from dropdownlist, then tick the checkbox and update the value ?
View 1 RepliesI have an asp.net menu in which i have to let some nodes visible or invisible base on some logic.I know i can find value by item but i wnated to FindItemByValue of my asp.net menu.Could it be possible?
View 3 RepliesI have a project that queries a set of times from a database and uses these entries to populate a dropdownlist. Once the page is loaded, the user can select one of the items in the DropDownList. When the "Save" button is clicked, the Selected item value is returned to the [HttpPost] version of the controller action. This item is then stored into session. If the system returns to the page containing the dropdown, I want the saved Value to be selected in the DropDownList. What actually happens is that the DropDownList is always set to be the first item in the list.
Database Table: This data has been imported using Link to SQL
[code]....
I bind dropdownlist in my page
protected void Page_Load(object sender, EventArgs e) {
BindDropDownList(DDL1, "city1", "name", "ID");
DDL1.Items.Insert(0, new ListItem("select city", "0"));
}
And SP
LTER procedure [dbo].[city1]
as
begin
select id,Name
from city
end
And design code
<asp:DropDownList ID="DDL2" runat="server" CssClass="daddsd">
</asp:DropDownList>
And here is imagebutton code that when click on it update data into table
protected void ImageButton_Click1(object sender, ImageClickEventArgs e) {
string data = Server.UrlDecode(Request.QueryString["BehCode2"]);
SqlCommand _cmd = new SqlCommand("insertinfo", _cn);
_cmd.CommandType = CommandType.StoredProcedure;
_cn.Open();
[Code] ....
Here when i click on button it insert all data into table but it didn't insert my selected item from dropdownlist it insert select city that i define in page_load
DDL1.Items.Insert(0, new ListItem("select city", "0"));
And when i delete this code from page load it insert in table first row of my table it didn't insert my selected item from dropdown list.
i use a dropdownlist in a page, with its items taken from a mysql database
i also use autopostback property...my problem here is that, every time i selecct an item, the first item in the list gets seelected
I have 2 dropdownlist in my page
1-ddlzone1
2-ddlstore1
What I need is if I select default item i.e. 0 in Zone dropdown I need to show all items in store dropdown. Below is my stored procedure to get the stores
ALTER procedure [dbo].[selectcenter]
@RegionID varchar(5)
as
begin
select ID,Centername
from Shoppingcenter
where RegionID=@RegionID
group by ID,Centername
end
I need to add an item in a dropdownlist and also modify the value of that item, but im getting an error : "Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index"here's my Page load
Dim rt as new OleDbCommand("Select * from Question ", con)
dim rd as OleDbDataReader
rd = rt.ExecuteReader
Dim a as new OleDbCommand("Select Count (*) as C from Question" , con)
[code]...
I know the employee's ID and would like to remove it from my List<Employee> listOfEmployees.
The listOfEmployees.Remove seems to require index of the item to be removed.
I have a class name Holder. I create a List of Holder, then add Holder to it.
holder = new Holder();
holder.Id = id;
holder.Distance = distance;
holderList.Add(holder);
its cool at this point. But now i want to delete a holder from holderList and I do following in another method.
holder = new Holder();
holder.Id=id;
if(holderList.Count > 0)
holderList.Remove(holder); //Error here it does not remove that spacific item.
i have two dropdownlist , i want to add item in dropdownlist 2 from database if the city is changed in first dropdownlist..I am using access database
here is my code:
[code]....
but when i select any text , it will not show anything in dropdownlist2 ..
I have 2 cascading dropdown lists (ListA and ListB).
The selected value from List A is used to determine ListB.
I am wondering if there is a way to dynamically remove items from ListB after ListA value is selected. There are entries in ListB that should not be available unless the user has certain security permissions.
I have I gridview in which the data source is a List<T>. When I try to remove an item from the gridview in my buttonRemove_Click() function another function which handles the RowDeleting event is invoked where I remove the item from the List<T> as well. The problem is that if I select to remove multiple items from the gridview the index of the gridview and that of my List<T> un-syncs. For example I have 10 items in my gridview and in my List and I try to remove the last two items. Here is how I do it in my buttonRemove_Click function
foreach (GridViewRow row in gridViewItems.Rows)
{
CheckBox cb = (CheckBox)row.FindControl("checkBox");
if (cb != null && cb.Checked)
{
gridViewItems.DeleteRow(row.DataItemIndex);
}
}
Then in the RowDeleting function, I'll first receive the event for the index 8, I removed it. Now when it comes to deleting the last item (index 9), then it'll throw exception because the index is out of range. How do I solve this problem? I think the problem will be solved if I try removing the rows in reverse order i.e. starting from the highest index. Can anyone tell how can this be done?
I have created my menu items using web.sitemap, asp:sitemapdatasource control and asp:menu control. I'd like to programmatically remove some of the parent menu's based on certain conditions (I'm guessing it will be under the MenuItemDataBound event).
I know how to remove child menu items, not sure how parent menu items can be removed.
i have a place order form and i have a drop down list that contains list of items whenever i add item (for example item1) to place order and click add another item button, i need to remove (item1 ) from drop down list to avoid dupplicate insert in sql table or mayb need to fill the drop down but without (item1) cause i already selected it i am using sql datasource to fill the drop down list of items.
View 13 RepliesI Use listView and flow configure and connect to database whit wizard.
in Item Template View, i cannot remove items, when reomve it, after 2 seconds, An item that was deleted is shown again!
I need to remove an item from the check box list ("cblServices") based on the query string value ("serveytype").
I pasted my code here.
[Code]....
When the query string ("serveytype") = 1, some of the items in the checkboxlist "cblServices" need to be removed before it's being Enabled = true.
Similarly, when "serveytype" = 2, some of the items need to be removed.,etc..
I have a list view with couple rows, which has a delete button for each row.
Now once the delete is performed and it's a success, I want to remove that item from the ListView
[Code]....
I use asp.net 4, ef 4 in c#.I use System.Web.Security to manage users in my web application.
I have a collection of users in MembershipUserCollection and I need remove some users during a foreach on that collector.
I suppose it is impossible to remove an item from the collector when you are looping.
MembershipUserCollection users = Membership.GetAllUsers();
foreach (MembershipUser x in users)
{
if (!Roles.IsUserInRole(x.UserName, "CMS-AUTHOR"))
{
users.Remove(x.UserName);
}
}
Error: Collection was modified; enumeration operation may not execute.
In Listbox after select one item in first and how to unselect or remove focus on that listbox.
View 1 RepliesI wish to remove the edit button in the formview item template if a particular user is not authorized, how do you accomplish the removal?
View 6 Repliesactually i want to delete the value from the dropdownlist once it is selected i.e after clicking submit button the value must get removed but the problem here is that in my dropdownlist only 1st item is getting selected and even after removing the value [through coding] [it shows that value is removed] the same item is getting selected again and again...here is the piece of my code...
protected void Button2_Click(object sender, EventArgs e)
{
String imid = DropDownList3.Text.ToString();
int imageid = Convert.ToInt32(imid);
String lid = DropDownList4.Text.ToString();
[Code]....
I would like to know, how to make sure, item with same name do not appeares 2x in the dropdownlist item?
View 1 RepliesI have hard coded and added items to dropdownlist ie teamsize as 1,2,3 like that.When i load this dropdownlist for edit/update i get duplicate values like this
1
1
2
3
4...
How do i eliminate this duplicate values?
I have house_info table in database and I have dropdownlist in my page that bind it from Shoppingcenter columns from house_info table...
in Shoppingcenter column in some rows are data and some rows are NULL
now when I bind dropdown list it shows space in first Item after that it shows other Item that bind from house_info table I mean in dropdownlist shows NULL value (Space) that is in Shoppingcenter column
below is SP
ALTER procedure [dbo].[selectcentercityS]
@city nvarchar(30)
,@region nvarchar(5)
,@district nvarchar(30)
[Code] .....
I don't want it shows space in dropdownlist. What should I do?