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?
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
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
[Code]....
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:
[Code]....
CODE BEHIND VB.NET
[Code]....
First time using a ListView control, I have it inside an UpdatePanel:
[Code]....
[Code]....
[Code]....
[Code]....
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.
I have a collection of objects I bind to a Listview like this:
if (!IsPostBack)
{
List<Equipment> persons = new List<Equipment>
{new Equipment{ItemName = "Sworn", ItemCount = 7, ItemCost = 255}, [code]....
I want to Add/update/delete from this object collection and submit the final data object collection to the BL when the user saves... Rather than just delete/add/update everytime a row is changed.So my question is how do I maintain state for that datasource? I have tried this (delete example)
protected void lvMain_ItemCommand(object sender, ListViewCommandEventArgs e)
{
switch (e.CommandName)
{
case "Delete":
{[code]....
But it does nothing. I can't rebind it to the datasrouce because at this point the datasource is null.. I assume the listview keeps its own view state which contains the data?... I guess worse case I can always hold the Object Collection in a Session object.. ..
I am trying to display checkboxes in front of every row in list view. So that after selecting the desired checkboxes user clicks on delete button and we should delete that records.
but how can it be done?
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:
[Code]....
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:
[Code]....
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.
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?
View 3 Replies[Code]....
Implementing the listview control with delete link and lightbox?
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?)
[Code] ....
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:
[Code]....
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"
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.
Here i want Do project with Angular js..
View 1 RepliesHow to delete the row if checkbox is checked using listview of asp.net with c# ....
View 1 RepliesI have a ListView in my system..
And inside it, there is a button called "Delete".
In the behind code, I tried to access the button control in the listview. However, the code keep looping non-stop..
The logic is the Delete button will only be visible by the current logged-in user. And I had already set the button as visible = false. I had set breakpoint to the line : Delete.Visible = true;. Once the execution reach here, it loop back to the first line again..
And Delete button remain invisble despite the execute visible = true statement..
Here is the code:
protected void ListView1_ItemDataBound(object sender, ListViewItemEventArgs e)
{
MembershipUser currentUser = Membership.GetUser();
Guid currentUserId = (Guid)currentUser.ProviderUserKey;
[Code].....
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?
View 3 RepliesI'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.
View 2 RepliesI have this DropDownList bound to a XmlDataSource, but the XPath must depend on another input (another DropDownList). I modify the XPath and rebind inside the parent DDL's SelectedIndexChanged, but the page does not refresh. What should I do to display the update?
protected void ProductDropDownList_SelectedIndexChanged(object sender, EventArgs e)
{
CompMapping.XPath = "//couple[@product='" + ProductDropDownList.SelectedValue + "']";
CompMapping.DataBind();
ComponentDropDown.DataBind();
}
ComponentDropDown is set to AutoPostBack=True, but that's not enough. Could it be related to the fact both DropDownLists are in a UserControl?
I am Trying to build a Treeview Control using an XMLDataSource which consumes a XML file (which is set dynamically) . The Problem is that the XML file Size is huge, arround .5 MB so the page load is hit because of this . Now i know that there is a PopulateOndemand Property of the treeview and there is also a populateondemand property of Treenodebinding which is used in XMLDataSource .
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.treenodebinding.populateondemand.aspx
my code is as follows
DataSet ds = new DataSet();
string connStr = "Data Source=PARITAS00024;Initial Catalog=MenuDb;Persist Security Info=True;User ID=sa;Password=paritas123";
using (SqlConnection conn = new SqlConnection(connStr))
{
string sql = "Select MenuId, MenuTitle, MenuDesc, MenuURL, ParentMenuId from tblMenus where Status=1 and RecordStatus=1 order by ParentMenuId, DisplayOrder";
SqlDataAdapter da = new SqlDataAdapter(sql, conn);
da.Fill(ds);
da.Dispose();
}
ds.DataSetName = "Menus";
ds.Tables[0].TableName = "Menu";
DataRelation relation = new DataRelation("ParentChild", ds.Tables["Menu"].Columns["MenuId"], ds.Tables["Menu"].Columns["ParentMenuId"], true);
relation.Nested = true;
ds.Relations.Add(relation);
System.Web.UI.WebControls.XmlDataSource xds = new System.Web.UI.WebControls.XmlDataSource();
xds.TransformFile = "~/TransformXSLT.xsl";
xds.XPath = "MenuItems/MenuItem";
xds.Data = ds.GetXml();
xds.ID = "xmlDataSourceMenu";
Menu1.DataSource = xds;
Menu1.DataBind();
is this correct way of using the xmldatasource ?
Which one is better for me to store urls of my products images while i was trying to bind images with gridview. provide me some code snippet to bind images to gridview with XMLDataSource.
View 3 RepliesI'm creating page to put together a list of cinema trailers on an asp.net web page inside of a repeater.
The source of the data is an online XML feed.
To do this I'm binding the repeater as follows...
string XML_FEED_URL = "http://some-cinema-feed.com/comingsoon/";
XmlDataSource data_source = new XmlDataSource();
data_source.DataFile = XML_FEED_URL;
data_source.XPath = "/movies/movie[position() > 0 and position() < 3]";
this.moviePreciewsRepeater.DataSource = data_source;
this.moviePreciewsRepeater.DataBind();
The issue is that the length of the feed changes regularly and rather than selecting a range of movies with the XPATH (i.e. 1-3 in the XML) I need to select 3 totally random movies from the XML and bind this back to the repeater.
I'm using XmlDataSource as the datasource for a dropdownlist. Now I want to set the SelectedValue of the dropdown when the page initially loads. I tried the OnDataBound event of the dropdown in which I could see the total items but setting the SelectedValue didn't work. In OnDataBinding event, I couldn't even see the total items probably because the list isn't bound yet.
View 1 RepliesI have XML like this:
<?xml version="1.0" encoding="UTF-8"?>
<viewentries timestamp="20100923T130205,90Z" toplevelentries="8903">
<viewentry position="1" unid="A4958CC88435D1A8422577A7004422E8" noteid="4DF15A" siblings="8903">
<entrydata columnnumber="0" name="$59">
<text>63722</text>
</entrydata>
<entrydata columnnumber="1" name="$70">
[Code].....
However, if I save the same xml to a file to my computer, it works without a glitch.
