Web Forms :: Delete ListViewItem From ListView Using OnItem Deleting Event
May 7, 2015
protected void ListView1_ItemDeleting(object sender, ListViewDeleteEventArgs e) {
// ListViewItem item = ListView1.Items[e.ItemIndex];
ListViewItem itm = ListView1.Items[e.ItemIndex];
// ListViewItemType gd = ListView1.Rows[e.RowIndex];
//ListViewItem gd = ListView1.SelectedIndex ;
[Code] ....
Error is
Server Error in '/Riyaz Asp' Application. Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS1061: 'System.Web.UI.WebControls.LinkButton' does not contain a definition for 'value' and no extension method 'value' accepting a first argument of type 'System.Web.UI.WebControls.LinkButton' could be found (are you missing a using directive or an assembly reference?)
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Oct 13, 2010
I have the selected DataKey in session from the ListView. I am able to set the selection back when I comeback to this aspx page containing listview. But when the selected item in the listview belongs to some other page (not the first listview page) then I need to also set the selected listview page to the one, where my item belongs. I use a listview and a datapager (with template paging) How can I find, in which page my item to be selected exists?
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Sep 14, 2010
I created a ListView and attempted to delete a record using the delete button and native procedures. It failed and threw an error.Pass in a valid dictionary for delete or change your mode to OverwriteChangesIn researching this issue, it appeared there is a problem with the list view when deleteing and
ConflictDetection is set to
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Apr 21, 2010
i have a project that allows users to send requests to another user. When the user views the requests he can select reply. I want to be able delete the item after the user selects reply
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Jun 18, 2010
Does anyone know how to program a Confirmation box to pop up when deleting a row in a ListView Control in ASP 3.5 in VB? I have the delete buttons in both the ItemTemplate and AlternatingItemTemplate.
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Sep 19, 2010
I have created a ListView with a SQL DataSource. It has Item Template, Alternate Item Template, Insert Item Template, Layout Template, Edit Item Template & Select Item Template. There are delete buttons in the Item Template, Alternate Item Template and Select Item Template. The Delete command is
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which seems correct. I have not selected Use Optimistic Consurrency when I configured the data source. When I click on the Delete button, it deletes the selected record and the record after. THe ClienNoteTypeCode is a varchar(4) field and all codes are unique. It deletes both records in SQL Server when the button is clicked, but one one is deleted on the web page until I refresh the page and then both are deleted.
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Jan 21, 2010
I'm using the asp.net membership on my website. On the User Administration page i've got a GridView to show the details of the users on the site. As a datasource rather than just using the Membership.GetAllUsers function i've got a SQLDataSource as i need to display user information from 3 different tables. I'm trying to add a delete button to the GridView. I'm setting the Membership's UserName as a DataKey and then using the RowDeleting event to call Membership.DeleteUser for the appropriate UserName. This works fine and the user is deleted however i then get an error showing up that "Deleting is not supported by data source 'SqlDataSource1' unless DeleteCommand is specified."
I don't want to use the SqlDataSource for deleting as i've already done it using the Membership. How can i stop it from trying to do this? Here is the cut-down that i have if you're interested. The selectcommand in the sqldatasource was auto-generated by it.
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Jul 26, 2010
I have enter the value in gridview using datarow and ihave allowed user to select particular row using checkbox and pressing delete buttons.
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Feb 20, 2011
I have a ListView that displays comments for an article.Each comments has a button that, when clicked, deletes that comment provided that the logged person is the comment's owner or an administrator.
I need a way of storing comment's ID in the ListView somehow and then I need to check if the ID of the comment's author is the same as the ID of the logged user (which is stored in the Session) and then, if they match, display the button that deletes the comment when clicked.
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Feb 19, 2010
I have bounded my GridView to an ObjectDataSource. I have set a delete method for this ObjectDataSource. Now how can I delete my GridView's records with enable Deleting?
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Feb 22, 2010
I need you assistance, Dynamic Delete LinkButton with CommandName=Delete gives me an error: Delete can only be called on a valid data item. nfact I am designing a Complex Grid using .Net 3.5 ListView Control with Scrollbar and Fixed Toolbar: This grid consist of 3 Tables:
1- footer
2- Toolbar Control
3- Scrolling Data Grid with Header
ListView give us only one ItemPlaceHolder to Bind Data as per LayoutTemplate, so I cannot able to manupulate my Toolbar Controls with ItemTemplate :(, therefore I decide to use ItemDataBound to add ImageButtons Dynamically using Init Page Event and I am able to get the result as you saw above:
ImageButton with funnel icon is with CommandName="Filter"
ImageButton with magnifier icon is with CommandName="View"
ImageButton with stop icon is with CommandName="Delete"
Now I can able to handle Filter and View with OnItemCommand Event but when I click Delete button I am getting an error as shown below: The grid used CSS I am sending you the HTML and code behind to resolved this problem: HTML CODE:
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CODE BEHIND VB.NET
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Aug 19, 2010
I have a gridview,sqldatasource and a link button for delete in the sample code below
When Delete is click the confirmation pops up. When I confirm yes, the rowdeleting event doesn't seem to be firing. I addeed a label to see if the event is firing. To avoid runtime errors I added a dummy but actual sql delete command. Once If I get it to work, I want call a stored procedure to delete the row.
My question is
1. Why is the gridview row deleting event not fired.
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Apr 28, 2010
First time using a ListView control, I have it inside an UpdatePanel:
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When the UpdatePanel Loads, it feeds the data to the ListView. Whenever the user clicks on a row in the ListView, a new window displaying a "note" pops up, the ItemDataBound event ties it all together. What I'm trying to do is add a button to each row so that the user can delete the row. This would call a Sql statement and then the row should disappear. I followed a couple of articles I found on ListView on how to do this, so I added a button called imgBtnDeleteNote (see markup above) and set the CommandName = "Delete", hoping that it would trigger the ItemCommand and ItemDeleting event (I have some bogus code in them, first I wanted to see if they would trigger).
The problem is that they don't seem to get triggered when I click on the delete button. All the rows in the listview disappear, and when I manually refresh the page they come back. My guess is that the events are not firing because I'm not using a DataSource object in the aspx code, but I'm not sure.
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Feb 18, 2011
I keep getting Object Reference not set to an instance of an object errors when I try to use the ListView delete function. It is a fairly freshly created listview and is very close to the original template so not sure what is going wrong. Some possibly relevant code:
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I also put in a breakpoint in the deleting event (only reason I added the deleting event) to look at the status of everything. When I do: Contact delContact = (Contact)e.Entity; and look at the values, the values for almost everything are set to null. It does have the correct value for the ID of the contact object that needs to be deleted. When I continue to step, it jumps to my designer.cs file and appears to break here:
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likely because _Case_ID is null. The exact exception I'm encountering is: System.NullReferenceException: Object reference not set to an instance of an object. While I could probably re populate the object with correct values, that doesn't seem likely to address the real cause of the problem.
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Aug 30, 2010
I'm new to Asp.net, and I looked at an example of using a listbox's selected index to delete from a sortedlist. I'd like to write somethingthat would get the selected index from a different control, like a listview, and then delete from the sortedlist. I've read up on a few examples on how to bind data from a sortedlist to a listview, but I've not seen an example of how to get the index once the data is displayed! Can this be done?
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Jul 21, 2010
I need a Listview that will show info from several database tables. My delete button, will not delete the record from the database. I cannot get DeleteOnSubmit() to work at all. I am in the very beginner stage. This is my first project. I thought this would be a good project for learning purposes.
Here is my code:
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Aug 9, 2010
I have a Listview which uses a StoredProcedure to display the data. That part works fine. What I'm trying to do is delete multiple lines using a different store procedure. So I did this code:
<asp:SqlDataSource ID="SqlDS_BasketDetails" runat="server"
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Feb 16, 2010
Within my ItemTemplate on a listview i have a link button carrying out a delete command. As it's a custom command i use the ItemCommand to do the deleting and have a stub itemdeleting.
It works fine set out like this however i only want the delete button to be available to logged in users. If i wrap the linkbutton in a loginview and then click on it the ItemCommand and ItemDeleting never get called the page just refreshes.
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Feb 20, 2014
I am insert and update the data in Excel sheet.while iam deleting the data it gives the Error like Deleting data in a linked table is not supported by this ISAM.
string excelConnectionString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + Fileloc + ";Extended Properties=Excel 12.0;Persist Security Info=False";
OleDbConnection excelConnection = new OleDbConnection(excelConnectionString);
String cquery1 = "Delete from [data1$] where id=" + Txtid.text;
OleDbCommand cmd = new OleDbCommand(cquery1, excelConnection);
excelConnection.Open();
cmd.ExecuteNonQuery();
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Dec 26, 2012
i have a problem in my gridview control,actually i am having a gridview and bind the gridview with the database,in that gridview i provide a link button called delete,when i click the delete button its shows an error,after reloading the page the current record is deleted,but whenever the delete button is pressed its shows the following error..The GridView 'GridView1' fired event RowDeleting which wasn't handled.but whenever i reload the project the record will be deleted,here is my code
<asp:GridView runat="server" AutoGenerateColumns="false" ID="GridView1"> <Columns>
<asp:BoundField DataField="empname" HeaderText="EMPLOYEE NAME" SortExpression="empname" />
<asp:TemplateField> <ItemTemplate>
<asp:LinkButton runat="server" ID="lnkDelete" Text="Delete" CommandName="delete"
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Oct 3, 2010
It should be simple, but I didn't found yet how to do it. There is only one user (Admin with user name and passowrd, he has a cookie so I know when he is watching the page) I would like to show him the Update/Delete/Insert button options in my ListView, but to the other users I don't want them to be able doing this kind of things, So it should be hidden from them. How I am doing it in C# code? Showing/Hiding these buttons?
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Feb 11, 2011
I've a listview in which i'm binding data from objectdata source. I have a requirement where i've to allow edit/delete for only certail listviewitem which meets specific requirement. How do i dynamically set that some item can be only be edited not deleted thus only edit button/link should appear and vice-versa.
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Apr 4, 2011
I've created an asp:ListView and attached it to an asp:XmlDataSource. I would like to support the delete command for my list, so I've added the following button:
<asp:Button runat="server" CommandName="Delete"
Text="Del" CausesValidation="false" />
It throws an 'Specified method is not supported'.how to implement this delete?
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Sep 27, 2010
I have a repeater which binds a set of data. Within this repeater is a column with various controls for updating, deleting, etc. These are image buttons which fire an onclick event such as "DeleteRecord". All this does is fire a stored procedure, passing in the ID of the record to delete from the CommandArgument of the object.
This works wonderfully... except for one rather huge problem. Once you delete a record, if you refresh the page, the record where the first deleted record used to be gets deleted. For instance... if I have 4 records
1 Record1
2 Record2
3 Record3
4 Record4
and I delete record 2... The page reloads with (which is fine):
1 Record1
3 Record3
4 Record4
...if I then hit refresh...
1 Record1
4 Record4
I assume this is because the erroneously deleted object (record3) is now in the same hierarchical place as the old object used to be and .net therefore doesn't know the difference, the page refreshes and fires the onlick event, grabbing out the command argument of the new object and deletes based on the ID as obtained from the commandargument of the new object. This is obviously a huge problem, if a client did this it would destroy data erroneously and I'm at a loss here. Is there any way to stop this from happening? I'm not sure if there is a better way to go about doing things or not. If there isn't, I need some sort of way to tell the page not to execute the event or to cross reference the ID of the object that is intended for deletion against the object itself...
Code below for convenience...
EDIT Wrapped a LinkButton around it because I have some jquery code in here as well which stops the page execution to wait for user confirmation. Pressing "ok" continues page execution.
<asp:LinkButton ID="oDeleteLink" CssClass="oDeleteIcon" CommandName="Delete" CommandArgument='<%# Eval("iAccountID") %>' runat="server">
<asp:ImageButton ImageUrl="/files/system/icons/trash-steel-16.png" ToolTip="Delete This Account" AlternateText="Delete" ID="oDeleteIcon" runat="server" />
</asp:LinkButton>
protected void oAccounts_ItemCommand(Object Sender, RepeaterCommandEventArgs e) {
if (e.CommandName == "Delete") {
int ID = e.CommandArgument.ToString().Numeric();
db.SPs.SpDeleteAccount(ID).Execute();
UI.Confirm(uiBroadcast, "Account has been deleted", "300px");
BindAccounts();
}
}
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Mar 26, 2010
in the grdview i use
AutoGenerateDeleteButton="True"
and call OnRowDeleting= "GridView1_RowDeleting"
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
[code]...
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