Web Forms :: Event Order With Controls?
Oct 20, 2010
I've only been coding .net for a few months so fogive me if the answer to this is obvious.I have been hitting a repeated problem in my application to do with event order.My requirement is always the same:1. Display page with controls2. Pick up on some event with these controls3. based on that event do some calculations before displaying the next page4. Now display the next page taking into account what the user has clicked.One example is that I have a chart, and next to it several link buttons these filter the age of the x axis eg 1 Year, 2 Years, 3 years. On the click event I set a from date of 12 months, 24 months or 36 months. I then display my chart initialising it in the page load event. I have a number of other things going on in the pageload making it difficult to move all the code to the control event from page-load.Neither of the above senerios work and I assume this is because the page load / init events fires before the control events from the previous page (is this right?)To illustrate the point I have made a simple program below that does not work. I'd be grateful for any guidance on how to go about this type of interface.
[Code]....
[Code]....
View 1 Replies
Similar Messages:
Mar 19, 2010
What I have is a command column with 2 link buttons, Review and Update. The Review link will show a more in depth look at the record (pretty much a detailsview) The Update link will allow the user to edit a few select fields. The Update link works fine, because I put the code in the GridView3_SelectedIndexChanged event. When I click the Review link (which has code in the LinkButton1_Click event), there is no data from the Selected row, because the row is not yet selected. Is there a way to trigger the selection BEFORE the button click event? It seems like this should be easy, but I haven't needed to do this before.
View 3 Replies
Jan 27, 2011
I have parent gridview5 and nested child gridview6 within it. The page is working as expected and formatted as i need it now.. I added a select button to the child gridview6 and when i click on it i get an error: {"Object reference not set to an instance of an object."}
I found examples of using the find control, but within the parent gridview.. and i use that fine with other controls.. but cant figure out the right combination of finding the selected row for the nested gridview so that i can display a modalpopup.
View 8 Replies
Oct 22, 2010
I have two table Order and Order Detail.
What i need is i need to bind last 10 Order in Gridview/details view with paging, and the same order detail also fetch from database and shown in another gridview.. if user click any oderNo in first Gridview/DetailView then i need to show Respective order detail in anther gridview..
without postback coz we already fetch 10 order with orderdetails from the database..and if user click next 10 orderNo using paging then again we need to load 10 orderNo with respective orderdeatils from database like this going on....as well as let me know how to take print of particular oder and order detail....?
View 7 Replies
Aug 11, 2010
I'm learning asp.net page life cycle. I find an article on MSDN [URL] It says that If the request is a postback, control event handlers are called. After that, the Validate method of all validator controls is called, which sets the IsValid property of individual validator controls and of the page. And the picture in the article also says validate fires after event handling. If this is true how can I get status of validator when I handling the event?
View 3 Replies
Jan 23, 2010
I have 5 hard corded texboxes in a page in a sequence with sequence Number . Now i want to add re-order /re-arraning functionaly .. but i can't use ajax reorder list because i have 5 hard corded texbox. how can i maintain the order in Insert/Update cases. And also suggest me control that i can use, another than ajax re-order list. coz i not using any list items i have hard corded items on the page.
View 1 Replies
Feb 7, 2011
The AjaxToolkit has a ReorderList. I'm searching for a jQuery solution that does the same and found this page. I would like to change the order of divs (vertically) and upload the new order to the database (ajax).
View 2 Replies
Apr 24, 2010
From my testing, it appears that the order of parameters for the UpdateParameters must match both the order of the bound fields on the form (asp:Formview), and the order of the parameters in the UpdateCommand. Is that correct? If so, why do the parameters have names if all that matters is the order? I tried both asp:ControlParameter and asp:Parameter. Maybe the more relevant question is why aren't the names used instead of the order, particularly for the form order?
So, given I display the Identity field (CID), and need that for the update, I cannot get the update to work without including it in the UpdateCommand. Of course, since it is an autonumber field in Access, I cannot actually set it. So, I had to add another field to the db (lngUpdateCID) that I could set. That can't be how it has to be done, but I could not figure out another way to do this.
The relevant code is below:
[Code]....
View 23 Replies
Mar 3, 2010
1) I know there are lots of web sites that describe in what order events are called during the Asp.Net page life-cycle. But is there also a tool, perhaps Reflector, that would enable me to figure out by myself in what order are ALL the page's events and their event handlers called during the page's life cycle? 2) Would you say that trying to figure out exactly what is going on under the hood is a good idea or a waste of time? To clarify - I'd like to figure out exactly what is going on when a control tree is build - thus all the method calls, all the events called etc needed for control tree to be build ( I imagine there are hundreds or perhaps thousands lines of code written just for building a control tree).
View 4 Replies
Sep 16, 2010
I m getting Problem in Tab Index Setting of Dynamic Created Controls. There are 6 Drop down dynamic created and also Two user controls which contains text boxes. There are also Static Controls on a Page. How i set tab index for all controls. I have try to give from code behind using TabIndex property But it's not working and Tab order get destory.
View 1 Replies
Dec 30, 2010
I am created dynamic Usercontrol in the placeholder, it works fine(top to bottom) but i need to add controls in reverse order mean(bottom to top). I don know how to handle this one. how to display dynamic control in Bottom to top?
View 4 Replies
May 4, 2010
I have a FormView with an EditTemplate.And the EditTemplate contains an ascx control:
<asp:FormView
ID="fvTicketUpdate"
runat="server"
[code]...
The contents of the ascx control has TextBox and DropDownList controls binding to the results of the FormView's ObjectDataSource through Text='<%# Eval("field1") %>'and SelectedValue='<%# Eval("field2") %>'.This works fine and I have been building all of my front end pieces like this as <asp:Panels> rendering as FieldSets that go 100% across the screen.And we call these areas "strips" accross the screen.But now I've run into a problem.One TextBox and one DropDown bind fine to a Ticket Object.But the DropDownList that works has its <asp:ListItems> hardcoded before hand.Now I have DropDownList that gets populated through a WebService in the ascx's
code behind like this:
public partial class UserControls_FormControls_PntipUpdtFaaInfo :
System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
[code]...
The Problem I think is the FormView is trying to do its Bind to the objectDataSource before its child ascx control is loaded in the Edit Template.And I am getting this error:
Databinding methods such as Eval(),XPath(),and Bind() can only be used in the context of a databound control.Meaning that the control must already be databound to bind the selectedValue to a Property of the TicketObject.Is there an easy way to force the order of loading to make the PntipUpdtFaaInfo control load and have its Page_Load execute and bind ddlEquip before the FormView does its first dataBind and executing its Evals?Otherwise I have to take out the eval on the ddlEquip SelectedValue attribute and go to the Parent Page and hack and force everything to happen when it needs to.This layout has worked out well for me.All of the ascx area strips across the screen share the same Validation Summary for example.It allows me to think about one section at a time and the Properties to the Business Obect and CRUD methods as I go.But this is a big brick wall I've hit.
View 1 Replies
Jul 10, 2010
Im trying to re-order rows in datagrid. i've looked all over, i still cannot make it work.
[Code]....
And this is the code behind to bind the data
[Code]....
View 5 Replies
Aug 6, 2010
I have the follow grid
<asp:GridView ID="dgParticipante" runat="server" AllowPaging="True"
View 4 Replies
Jan 9, 2010
I have the following code for a gridview. When I click the Header, it can be sorted by ascending order. But if click the header again , it is still ordered by descending. What I want is that the sort order can be reversed when click the header again. How to do that?
protected void gvList_Sorting(object sender, GridViewSortEventArgs e)
{
DataTable m_DataTable = (DataTable) Session["gvListDatasource"] ;
if (m_DataTable != null)
{
[Code].....
View 2 Replies
Dec 29, 2010
I`m making an online order project.Clients can chose products of some categories and than they can order it.
I have a database with tables: Clients,Products,Categories,Orders,A table that connects orders with products,etc etc.Now if a client cliks in category (for excample motherboard) than all kinds of motherboard will show in aspx page.
I want to ask you how to do this:how to take products i want from database and put them into an aspx page and after that clients need to click in one product and then order it.
View 1 Replies
Jan 6, 2010
How can I change gridview templatecolumn order dynamically?
View 4 Replies
Jan 10, 2011
After I complete an order and return to my products area my shopping cart still shows the items that were ordered. I have checked the database and the items are not there anymore. somehow my code is remembering the data.
View 3 Replies
Mar 12, 2010
I want that all my others GridViews be like this (the only thing that change is the data content):
dont forget that this has already some behaviours because of the pagination for example that i want to maintain in all others GridViews.
View 5 Replies
Dec 15, 2010
How to change GridView columns order or index during runtime.
View 2 Replies
Dec 21, 2010
In gridview boundedField, some Departments are listed like:
CIT
Customer Change Mind
Customer Issues
Logistics
Regional Engineering
Regional Sales
Can I change the order like:
Regional Sales
Regional Engineering
CIT
Logistics
Customer Issues
Customer Change Mind
I mean to say the list will not be on Asc or Desc. May I change order as per my own list order?
View 6 Replies
Feb 19, 2011
One of my table columns is for date and I understand how to use the ORDER BY statement in general. But how would I have the gridview sort with only the future items (relative to the current date) apear and leave out the past entries?
View 10 Replies
Jan 14, 2010
I'm having trouble generating onchange event code for a simple order form housed in a datagrid.This takes product items from sql database,whereas user can enter quantity (originally set to 25) of cards they want to order (the textbox id is txtQty). if they order 50 (so if they order 25 to 49,the price would stay the same for the lot),the subtotal for that given product will change another 15 dollars greater.,so the formula for the price wouldnt be product * price, but "if qty = qty + 25 then subtotal = price + 15".Then the button click event would add the subtotals to a grand total.
I cannot coordinate teh adequate javascript that would fit with this type of scenario,given that this is all predicated on each product coming from the database; i'm wondering if there is another good source i can be directed to that would show helper functions in the code behind or header subs to calculate the onchange (or textOnchange) event of the textbox.
<form name="mydgrid" runat="server">
<asp:DataGrid id="dgProducts" runat="server"
AutoGenerateColumns="False" CellPadding="4"
[code]...
View 1 Replies
Jul 20, 2010
In Gridview, Item Template i want to display Dropdown containing Order Status. On Dropdown selection I want to update Status corresponding to that Order. I just want to know how can I get OrderID value(which I had stored in Label in Item Template), in dropdown onselectedindex event. Grid view can't have Edit button.
View 3 Replies
Jul 3, 2010
I get the " The table must contain row sections in order of header, body, then footer!!" when i am using the following code
[code]
GridView1.HeaderRow.TableSection = TableRowSection.TableHeader;
GridView1.FooterRow.TableSection = TableRowSection.TableFooter;
[/code]
how to correct this problem.
View 2 Replies