I am completely new to ASP.NET programming, and was asked to work on a small project involving ASP.NET, VB (which I am new to as well) and Microsoft SQL Server 2005.
Being used to php/java I was hoping to find some kind of similar API to php.net and the javadoc. It would be very useful to have as I would prefer to work with a text editor, instead of using DreamWeaver or Visual Web Developer.
In the project I basically only need to use ASP.NET to read from a SQL 2005 database and write to JSON files.
I'm working on a page that has a significant number of textboxes/dropdowns/etc to fill out. The majority of these are going to be performing some sort of custom validation. I should note that it's nothing of substantial size - all just string or integer values.
I always hear (and have typically always agreed) that as much validation should be performed on the client rather than on the server, but in this case I am unsure. The difference here is that this project will be passed on to an IT guy who knows about computers but is still new to programming - he will be the one in charge of making the minor updates and changes to the way these custom validations work in the future.
My idea shifted from being as efficient as possible to being a bit less efficient but much more readable. I created a new class specifically for all of my validations which will be used throughout the website. By forcing all of my custom validation code in this class, though, I eliminate any client-side validations I might be able to perform. I should also note that each page that requires a custom validation will generally need to perform at least one server-side validation, so I will never be able to use client-side 100%
Considering the relatively low level of activity on the website (currently and in the future), would you consider this as an acceptable solution? Or would you ALWAYS prefer to have as much validation on the client as possible in order to increase the responsiveness, even if it makes things a bit more messy for whoever may be working on it in the future?
I need to write a paper on the comparison between (Microsoft Visual studio 2005 to develop web applications using asp.net) and (visual basic and Netbeans to develop j2ee applications using java).I need suggestions for good webpages,journals or documents which can help me out here. I have to write at least 1500 words
Even though I when I create a linqtosql class I mark C# as the language it was always shows up as a Visual Basic file in the App Code file. I can't get it to stop doing that. ????? What is going on?
I work on an asp.net web application (3.5) with Visual Studio 2008. There are a lot of files in this project (approximately 500 aspx files) and I think I can remove some of them.
My question is: Is there a way to identify the useless files, I mean, the files that are no longer used in the project (like an image, aspx, etc.); by using Visual Studio or an external tool?
I have installed SQL Server 2008 express, reinstall it with advanced services, uninstall TFS 2010 and tries to reinstall it but fails. It doesn't want to completely uninstall.
So I'd like to clean everything by hand (deleting registries, folders) but can't find any info. I have deleted install directory but installer still memorized that TFS is installed.
I am just taking a shot in the dark through this whole thing. I have an Addresses table with a StateID and CountryID field. They refer to the States and Countries table. I am using LINQ to SQL and Visual Studio 2010.In my AddressesController I have:
[Code]....
I created an AddressViewModel and it looks like this:
[Code]....
Then in my view code I have:
[Code]....
So when I try to go to Addresses/Create I get this error: ArgumentNullException was not handled by user code:Value cannot be null.Parameter name: itemsAnd it points to this line in the AddressViewModel:
I have set up the Profile correctly in the web.config file, however I can not use them in the Home Controller.ie: I have a property called FirstName I can not fetch that property and or set a value to it.I added System.Web.
how can i implement tagging in my asp.net website using visual basic. is there any online video tutorials? and how to show older tags or give new tags to any contents. secondly i want to know how to implement cloud tagging?
The say why of tagging this stake overflow is using right now. when we put the mouse on tags text box it suggest some older tags and also we can enter new tags.
VWD 2008 Express. Visual Basic.I have a customvalidator on my page and a corresponding OnServerValidate routine tied to this control in my VB code behind. I also have a "Save" button that is defined as "CausesValidation=True." I placed a breakpoint in my OnServerValidate code for the customvalidator and a breakpoint in my OnClick routine for the Save button. What I expect to happen is that when the "Save" button is pressed, all the validation is checked before ever entering the OnClick code for the Save button. If any of the validators are false, then I expect that the Save button OnClick code will not run.
I'm working to develop a website application for my client. Unfortunately, my client does not want to spend the money to host it. Is it possible to host the whole program with the database on his laptop without him installing Visual Basic?
Client application: This would query the database for information and then display this information on a map.
Database: holds vehicle information such as speed, location, payload etc.
Database update: This application would need to continually check for information received from vehicles and then add that to the database.
I am confident that with my current skill set and some research and learning, I could write the client application and interface it to a database. However, I am at a loss as to how to write the database updater. Presumably, this would be an application running continually on the server, waiting for information to be received from vehicles and updating the database. Is this something I can do with ASP.NET and Visual Basic? Or would this require a different way of thinking than writing web pages? Any pointers to relevant technologies?
I have some project written in Visual Basic (not Visual Basic .NET but simple Visual Basic - sic!). I can compile it and generate a dll. Then inside my web application I add reference to this dll library. When I run my web application hosted in default Visual Studio server, everything is fine and I can debug my Visual Basic project. However, when I host my web application in IIS then I can't. Code does not stop in my breakpoint. My asp.net catch the exception when I try to execute some method from the mentioned library which is something like:
Unable to cast COM object of type 'xxx' to interface type 'yyy'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{4C2875B5-3265-306B-9C74-1BEC98986B1A}' failed due to the following error: Error loading type library/DLL. (Exception from HRESULT: 0x80029C4A (TYPE_E_CANTLOADLIBRARY))..
I'm a Coldfusion Web Developer and I'm finding that in my local area,work for CF Devs has become extremely scarce.There were a handful of companies that were Coldfusion houses a few years ago and it appears most of them have moved away from CF development.I'm looking to expand my skillset to improve my employment outlook, and it appears that many of the web development positions that are available to me now are focused around .NET web development.The last time i took a look at .NET as a web development platform was way back during 2.0; where I found it to be poorly organized and extremely unfocused.
Apparently somewhere along the line I missed the boat because that's where about 90% of the web development jobs in my area are now.I've done some searching on google to see if I can find a tutorial, something that's akin to hand-holding, and have come back dissapointed.
So I'm turning to the SO community to ask for links and resources that might help better explain how .NET development works in a web development capacity,and for links to these resources so I can begin boning up my knowledge and start writing practice applications.
Trying to get the number of rows returned in a query in Visual Basic.The query returns 3 rows.Dim td As Integer = dataset1.Tables(0).Rows(0).ItemArray(0) has a value of 1.Dim tg As Integer = GridView1.DataSource.tables(0).rows.count has a value of 3.1. Why do aren't they both 3 ?2. Is there a best way of getting the number of rows ?3. Where can I find a tutorial or book that explains the notation above ?
I just upgraded to VWD 2010 Express and have a couple of questions:
1. How do you disable "code-behind" when creating a new project? It seems that "code-behind" is set by default. My previous projects written with VWD2008 Express use the opposite ie. the "code inside the page" approach. What options should I change?
2. When using the non "code-behind" model, the drop-down showing all page controls and their associated events is missing in my configuration. In VWDD2008, this list sits on the top of the editor. Any idea how I can restore the control list?
inserting a .swf or flash files in visual basic asp.net give me coding sample or procedure or a link to inserting a flash files in my web form in vb asp.net
I have a Sitecore/ASP.NET projects that I'm developing. Today at some point I inadvertently hit the "Clean" option in the solution context menu. It took me a while to figure out why my site was hopelessly broken. Turns out Visual Studio went ahead and deleted several required assemblies from the in dir which are not part of my project.How can I prevent this from happening again?The odd thing is that it did NOT delete everything... just a small handful. It left many that are not directly referenced by my project. This makes me wonder exactly what this feature is supposed to do? Is there some sort of file flag I can set? None of the files are set to read-only. If you're interested in details, the following got deleted:
UPDATE: You know what... I guess what I'm really more interested in here is WHY Visual Studio is leaving most of the files and only deleting these specific ones.
I have declared a variable as public (Visual Basic 2008). As a result I can call its value in all subroutines. However I cannot change its value in any of the subroutines?! How to do that? The variable I'm having trouble with (see code below) is called 'antwoordbestand' and I want to change its value in subroutine startKnop_Click.
