MVC :: Deleting Parent And Its Childs?

Dec 31, 2010

I have 3 Tables Order, OrderDetails, Item and Order is A parent and Oreder Details is The Child i want when I Select any Order and Delete it to Delete all Its OrderDetials Childs So Could Any One Tell Me what is The Delete Code i will Write in Delete Get and Delete Post Function and How can I Handle That

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How To Remove Parent Control Without Deleting Its Children

Nov 14, 2010

I want to remove parent control (which is span in this case) without deleting its children controls from container. how can I accomplish this in c#?

you can see the code here:

Note: I can easily find the "newsright" control and return its parent (which is span in this case)

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MVC :: Relation Integrity LINQ To SQL On Deleting Parent Rows?

Nov 9, 2010

I have a MVC project wich uses LINQ to SQL as a data layer.

For example, I have a tables ProductGroups and Products. Product is a child of ProductGroup, so to get name of ProductGroup, in aspx-page I use constuction like Model.ProductGroup.Name.

But when I delete a ProductGroup there is appear a NullReference Exception in presentation page.

While I was using just DataSet and manual SQL-queries, the rows, there was not every joined-element present, simple were not put in query result.

I know that before delete Parent row I have to delete all children rows, it's correct way.

1. Is there a way to ignore rows which has null-elements without manual checking through "IF"?

2. Is there simple way to delete all dependencies without manual enumerating every related tables?

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C# - Error While Deleting All Child Controls From The Parent Control?

Aug 19, 2010

I have the next aspx page.

<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.Master" AutoEventWireup="true"
CodeBehind="newsEditor.aspx.cs" Inherits="ExpertSiteV2.newsEditor" %>[code]....

In some situation i want to delete all the contents of Panel1. I write in the code:


But it doesn't work and i get message: Page cannot be null. Please ensure that this operation is being performed in the context of an ASP.NET request.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: Page cannot be null. Please ensure that this operation is being performed in
the context of an ASP.NET request.

Source Error:An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace: [InvalidOperationException: Page cannot be null. Please ensure that this operation is being performed in the context of an ASP.NET request.]

+373832 System.Web.UI.ScriptManager.OnPagePreRenderComplete(Object
sender, EventArgs e) +54
e) +8698462
includeStagesBeforeAsyncPoint, Boolean
includeStagesAfterAsyncPoint) +1029


What's wrong? Or how should i do this properly?

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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" />
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Dec 20, 2010

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i have the following code:


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void ShowBtn_Click(object sender, EventArgs e)


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I've followed a blog here on removing a record. this is what I have. everything works except the page doesn't refresh after delete has been called as if it's doing it in AJAX. I only see the change when i do a manual page refresh. [URL]

Master Page Head section

<head runat="server">
<title><asp:ContentPlaceHolder ID="TitleContent" runat="server" /></title>
<link href="../../Content/Site.css" rel="stylesheet" type="text/css" />
<script src="../../Scripts/jquery-1.3.2.js" type="text/javascript"></script>

Index View:

<% foreach (var item in Model) { %>
<%= Html.ActionLink("Edit", "Edit", new { id = item.LogId })%> |
<%= Html.ActionLink("Details", "Details", new { id=item.LogId })%> |
<a href="/Log/Delete/<%= item.LogId %>" onclick="$.post(this.href); return false;">Delete</a>
<%= Html.Encode(item.CampaignId) %>

public ActionResult Delete(int id)
return RedirectToAction("Index");
return View();

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TO "Naji-pcNaji"

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Catch ex As Exception
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I get the error:

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