Web Forms :: Setting Up A Mainform Subform Effect?
Mar 30, 2010
First let me say that I am new to ASP.net and I come from a Microsoft access background hence my post is in Access terminology i.e Main form / Sub Form. I am not sure what the correct terms to use for ASP.net are and this might hamper my explanation a bit but here goes.
In Microsoft Access (MC) you can create a main form and then drag and drop a subform onto it and the application automatically knows how to pass the primary key from the mainform to the foreign key on the subform when a record is created. So my question is how can I get the same effect in ASP.NET.
Let's say I am using the Surrogate Key approach (autonumber primary key) and I have a table called "Customers" and another table called "Address" where one customer can have many addresses.
1. How can I set it up so that when I am entering multiple addresses for a customer the application knows which primary key of which customer to use?
2. What are the best controls to use for this (Gridview, Formview, etc)
3. Building upon the above. Lets say i select ONE customer from a list of customers and I have many different subforms how does the application know what is the primary key to use as I update information on this customer in the various tables.
I know this is a lot I am asking, or it is simple and it is just a lot in my mind as I am new.
When I change the background image listed in a CSS class it does not always show up, rather the old image does, even though the old image file does not exist in the web site. Is there some other place where VWD stores the old image outside of the website?
When data is stored in my database as Ex: normal, and the data that the Combox is bound to has Ex: Normal, the mismatch in case is throwing an error when the form opens. The CaseSensivity setting on the ComboBox has no effect on this and it was the same with the asp List Box. We sometimes have data imported that has incorrect case and causes this problem.
In my web application i need to show a page in the frame by using some options.Successfully i have done it. But from the sub form which shown in the frame, from it on a button click I need to disable or enable the gridview in the main page. How can I do it?
In my web application i need to show a page in the frame by using some options.
Successfully i have done it. But from the sub form which shown in the frame, from it on a button click I need to disable or enable the gridview in the main page. How can I do it?
I am using an ASP.net menu control on my page. The page direction is changed using "dir" attribute of body/table containing menu control. Every thing works fine but the drop down position of menu control remains on the right side instead of left if changed to rtl. Can anyone suggest way out?? I am more interested in server side script instead of CSS.
We made some changes to the default.aspx page our website, but those are not taking effect. If changes are made to pages in sub-folders it just works fine. Only that the default.aspx page is acting weird even though they are just changes to the markup.
I am developing a project which has a master page and content page.In my content page I was using a gridview query from database with image display as an image button, when user click on the image in the gridview it will trigged a lightbox through Javascript. I follow the tutorial from the link in the following link [URL]
Everything works great when its on a stand alone page , however, as soon as I put the GridView in my content page then click on the image from the image button in the GridView I will be resulting the following error. Server Error in '/Photo_Master' Application. Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page nableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
Here is my code, I noticed OnClientClick = "return LoadDiv(this.src);" in the following image button will return false to prevent postback, however, it will only work if this is a stand alone page but not in the content page that links to a master page. I had tried the following approaches, but none of them works.
1.) EnableEventValidation = "false" --- Page is not going to break at least but No Lightbox pop up.
2.) Added PostBackURL ="javascript:Void(0);" as the properties of <asp:imagebutton> in the GridView - Did not work.
*PS - I had tried to put my lightbox pop up page on either master or content page tried different ways , however, nothing works. My goal is to have the PhotoGallery display in GridView where image display as an ASP.net imagebutton control under the content page, when user click on the imagebutton the lightbox effect will show.
When the page is loading i have the problem, that the Page shakes a little to the right and then to the left. Thatīs maybe because of a scrollbar effect in the browser.
I tried to fix a vertical scrollbar, but it does not work.
Take a look at the site: [URL]
There the pages in progress are available. When you hit the Navigation bar, the Page reload is shaking.
I have two checkboxes on web form chkYes and chkNo. When I click either I want the other one to be un-ticked. I have implemented the following in code behind;
[Code]....
Problem is ticking one tick has no effect on the other. What is the reason and how can I make it work?
I have constructed a few web pages that are constructed from Nested Master Pages. Here's an example of what they look like: http://pelalusa.com/Downloads/Public/NestedMasterPageExample.JPG
The rectangular area on the right side is where the Content Pages are displayed. Everything else is one of the two nested Master Pages.
To navigate to a particular Content Page the user will navigate down the treeview on the left, then pick an "Activity" and then pick a "Major Task". When this happens then a Page Redirect occurs to the appropriate Content Page.
It works but the page reload leads to a terrible looking UI. What would be MUCH better is if I could somehow just change what appears in the Content Page area. Is there a way to do this? If it matters, every page has an AJAX UpdatePanel on it.
Please check this website: [URL]My question is that how can I make this effect: that hyper link(HOME) is on that dark blue background. How can I do it?
I'm a novice ASP.Net/C# programmer, and had an experience only of a couple of projects during college and a couple of freelancing projects when I was recruited by a startup company to build their ASP.Net based website. I've just abut completed the website, and now since the company is not able to find a worthy enough SEO, I'm expected to do our site's SEO as well(which is a totally new experience for me). Did I mention that I'm the only Web Developer here?So, now as you'd expect a novice programmer having no concern for future SEO needs, I built up the site without giving due consideration to any of the SEO enhancement techniques.
The Problems:
ViewState - When is it required? Is it really required if I'm not creating any controls on the fly? I'm using DataControls though. And the website(the pages visible to the user not the CMS), is purely information based. Also, if I disable a control(ex: DataList)'s viewstate, will the viewstate of controls inside it also get disabled?(which is what I'd like actually)QueryStrings - Now comes the toughest part, I've used Query Strings to the extent that you can say that the website is QueryString driven, which unfortunately enough is not a good thing for SEO. To make matters worse, the QueryStrings for some pages are not uniform. For ex- In some cases the querystring may have variables A, B, and C, while in other cases it can have variables M, B, C and probably not all the three variables in some cases. Now, I know that I'd have to do url rewriting but these query strings have dynamic data fetched from the database tables of size more than 10,000 rows. So would I have to create functions for url rewriting and use regex to separate wheat from whaff?
This is how I am showing a span if there is some validation issues in the form. I want to use Jquery to show this span. I would like to slide it down slowly.
In one of the application i am developing on ASP.Net. In this application we have been using lots of AppSettings. In the initial development we used ConfigurationManager.AppSettings[""]. but as development progressed we created a utility class in which we would define a static property for each AppSettings. Then issues started to come. Now when application is deployed on testing server and we change any settings on AppSettings it does not have any effect unless we restart the IIS. here is the following code snippet i am using to create static property of AppSettings.
public static class AppSettingsUtil { public static string Log4Net { get { return ConfigurationManager.AppSettings["Log4Net"]; } } }
Look at the reply and contact buttons @ [URL]how would I get that effect to my buttons (Dont need the icons, just the blue color, borders and a mouse over effect)
I have been trying to use ajax in my asp .net website developed in 3.5 sp1 2008! The problem is I can see tool kit controls in my tool box but i can not use the controls. like i was using the text box watermark effect but when i run the website the text-box does not show effect and there is no option in text box to add extender. there is only remove extender option. I have code:
Is there any deficiency performance if import a lot of name space in Web.config or in every single cs file while it's not necessary to be in all classes ?
I running my static analysis checks again and I'm getting 100s of nags on
Label foo = new Label(); //Where this is an ASP.NET web forms label
Do I need to call dispose on these web forms labels? Also, how late in the page life cycle is it safe to call Dispose on these? If a class implements IDisposable, but doesn't actually do anything in it, is there any harm in not calling dispose?
(Yes, I have already read that closing connections is a good thing and using blocks are a good thing, too.)
DataSet is another class that seems to implement IDisposable for inexplicable reasons.
