I found an interesting discussion here:
[URL]
Quote:
DataSets are sub-par amateur solutions to code your Data layer...Stop Using Them and learn to CODE! :)
What is your opinion of DataSets vs. just stubbing out custom classes and working with those? What are other alternatives?
How to link multiple DataSets (why SSRS call it a DataSet even there is only one bunch of data fields in it) using keys, then put data fields from multiple DataSets into one Data Region? The reason I have to do this is: There will be 6 major DataSets to be used together few times in same report, it is not make sense to build a huge Matrix for all of them together. (in some data region I use data from dataset A and B, some times I use data from dataset A and C, D ...)
View 2 RepliesIm looking for some input on a validation problem i have. My demands for validation are:
1. Able to do database checks
2. Error messages are custom and imported from other localized source as stringvariables(NOT resource files).
3. DRY serverside and clientside validation.
As far as ive seen data annotations dont work well under these cirumstances, custom attributes are needed just to be able to output the strings(wonder why this wasnt thought of). This isnt a dealbreaker but as ive tested sofar custom attributes must be added in the global.asax wich i 1. cannot get to work in the CMS im building this on and 2. i dont want to have to edit the global.asax everytime the scripts are implemented. Serverside this solution works fine though. From what ive read IDataErrorInfo should not be used? So havent really checked how to get this rolling with client-side either.
My thought was using custom service layer validation with xval but documentation is very poor to the extent i could find any(couldnt find any real nfo on how to implement xval with your own code, ie not using the autgened client-side metadata wich leads to the annotation problem described above). So i have a hard time finding any working solution other than to build something 100% custom.
Do anyone have a solution or perhaps some information or can steer me in any direction on the best way to getting this done in a good fashion other than building custom?
I'm considering purchasing a resharper license but would like to know if there are any possible alternatives to resharper and how would you rate these compared to reharper? It doesn't necessarily have to be a free alternative but I would just like to know how good equivalent products are.
View 8 RepliesI am looking for an alternative to using UDP multicast on the .NET Framework and am looking for suggestions.I need to send messages to several web servers running quite a few ASP.NET applications. These messages would be one-way only, coming from several different machines. UDP multicast would be perfect except that I can't use it due to it requiring administrative rights. Seehttp://stackoverflow.com/questions/1941463/asp-net-multicast-udpclient-problems for details as to why.Is there something else that would work in a similar manner, allowing multiple applications to receive broadcast-type messages?
View 4 RepliesI'm using Watin in C# console app to crawl websites, there are five console app running at the same time.
The reason I partly use Watin as crawler is because a few websites use javascript(or ajax) to set page content.
Following is the sample code to get a page comment count:
Settings.Instance.MakeNewIeInstanceVisible = false;
using (var browser = new IE(commentLink, true))
{
browser.Link(Find.ByUrl(commentLink)).WaitUntilExists(20);
Span commentSpan = browser.Span("COUNT_TOTAL");
if (commentSpan.Exists)
{
int commentCount;
if (Int32.TryParse(commentSpan.InnerHtml, out commentCount))
{
return commentCount;
}
}
}
My problem is after running these 5 console app for a while (90 min), a lot of IE instances are stayed open (because of timeout or error or IE is busy), so the system is quite slow and need to reboot. How do I change my code to prevent this thing happen and make my apps stay effecient?
i want to create a global session which will stay active until and unless we manually kill it.how to do this in asp.net with c# what i am doing is
HttpContext.Current.Session["UserID"] = someValue;
but in this way the session is lost after some time.
I'm developing an ASP.NET website that will allow users to view and print Microsoft PowerPoint slides. Right away, I knew that Aspose had a product that would likely allow me to do this. What I'd like to do is look at alternatives just to say to management, "Yes, I've looked at the alternatives and they are". I can't seem to find any other than the open source project on Source Forge which seems to be mostly dead and I'm not even sure if it's something that would meet my needs anyway: [URL]. Is anyone aware of any alternatives to Aspose Slides .NET? Please list them if so. If you are aware there are no decent alternatives, I would find that information useful as well.
View 2 RepliesIn my web application, I have a dynamic query that returns huge data to datatable and this query is often recalled with different parameters. So database is exhausted. I want to get all record with no parameters to an object, and perform queries (may be with linq) on this object. So database will not be exhausted. Which objects can be used instead of datatable?
View 1 RepliesWe're using the MS Chart for .net, but encountering the "image not found" problem for which there doesn't seem to be a solution. Are there any alternatives for generating simple charts?
View 4 RepliesAre there any other ViewState alternatives? I've heard a lot Like Session, holding the state of some of the page's controls' state and getting destroyed the moment the user leaves the page. I know I'm describing ViewState itself, but I'm looking for a pattern of sorts or suggestions so I can avoid ViewState altogether. An example of how I'm using it is where I'm storing the contents of my grid (A list of ViewModels) to ViewState. This helps to know which entries are dirty, which ones have been modified, their indexes, the currently selected objects, etc.
View 4 Repliestitle isn't as detailed as I hoped but I have a few questions. Traditionally I've always been a mixed mode person, storing PDFs and other things into the file system with pointers from my SQL DB to them.
Recently I've heard more people storing files into the DB directly and wonder if I'm storing files around 100-200MB in size, will I run into a lot of issues? Are there ways to compress the files other than perhaps zipping them up and storing the zip?
Finally, something I've always wondered about but never really found a good work around for... if I decided to continue with the mixed-mode storage solution, and these I need to retrieve these files for use on a website, how do I secure these files so that someone can't just randomly come and retrieve these files off the server by guessing files names, etc?
I did one work around once where I stored a set of PDFs to a non-web directory like c:pdf and setting permissions for the web account to access them. This allowed me to retrieve them using the references in the DB and provide some garbled filename so people couldn't retrieve it themselves but this all seems rather complicated.
recommend any alternatives to the error provider? What are their advantages?
View 1 RepliesIn my experience, web.config files are widely reviled. In particular, I have found them difficult to manage when you have multiple environments to support, and fiddly to update due to the lack of validation at update-time and the verbosity of XML.
View 2 RepliesBlockUI is throwing some exception when using its demos on IE9 beta.Meanwhile, does anyone know a similar feature in jQuery for showing a "Please wait" message when ASP.NET AJAX is processing?
View 1 RepliesI have just started learning asp.net with c# and want to know how to write datasets to XML using asp.net.
Can anyone provide me any example or reference so that I can move ahead.
I have two datasets, each of containing single column. I want to compare each row of first dataset with each row of second dataset and check if any match in the data.How can i implement such a login in VB.NET with minimum iterations.
View 2 RepliesI am using a gridview as a dropdown extender for a textbox which works nice. I want to select a row in the gridview and fill in some textboxes with data from that row. I know how to do the Attributes.Add for cells in the RowDatabound event. But I have always passed the cell data to another page as parameters. How can I stay on the same page and fill in the textboxes?
Do I setup a javascript and pass the parameters to it and have it fill in the textboxes? I have other texboxes that the user has entered and need to keep that data there.
i have textbox and submitbutton at bottom of aspx page when i click submitbutton cursor moving to top of the page, actually i want cursor stay down
View 4 RepliesI have view.aspx page that when I open page and don't do any thing in this page i.e for 10 minutes when I come back to this page after 10 minutes and click on hyperlink or button below error happen. Why this error happen?
View 1 RepliesI have read a lot of posts describing why it isn't good practice to return heavy objects like DataTable/DataSet to the client from WCF. However, there doesn't seem to be much discussion about the alternatives (or maybe I'm not looking in the right forums).
My problem is this: I've tried to convert my DataReader/DataTable into a List<List<string>>, where List<string> represents the data in each row, but get an error at the point when the data is being sent to the client. A simple List<T> or a one-dimensional array gets returned without any problems. But whenever I try to return a collection of collections, there seems to be an issue. I don't know until runtime what my DataReader would look like as different stored procs are called based on user selection from a web form.
What am I missing here. Is WCF not able to handle collection of collections (I know that multi-dimensional arrays are not supported)?
I have a multiple database operation, Have three tables (MSsql) and need to delete one row in each table in one operation, one after another. (Three functions, three rows of code). Everything is working as it should be, recently I was advised to use a transaction scope, which should guarantee the safety of deletion from all 3 tables together.
Here is my new code:
[Code]....
Locally all worked just fine, the transaction scope worked well, but when I have uploaded my application to my hosting server, I got an error of: The partner transaction manager has disabled its support for remote/network transactions. (Exception from HRESULT: 0x8004D025).I talked with the host support, they tried to do something, then I got this error: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)).
After a 2 days, They have contacted me, they said it is not possible to disable some restriction, that will allow an access to this operation, because I'm using shared hosting, and I need to upgrade my plan to VPS. VPS is a very expensive for me, and I can't afford it, What I'm looking is a some similar way of doing the same operation as transaction scope do, that may work at my hosting, At least I would like to try something else. Is there any additional way for the transaction scope?
We are developing a web app that will have a pretty complex user and permission system. The general idea is that we have 3 levels of security:
a simple user - that can only access basic data that is in a data repository
a manager - that can open up data repositories
a superuser - that can open up repository factories.
Each repository contains various data types(text, images, etc etc). We are looking for authentication methods that will allow us:
1. Scalability.
2. Customization.
3. To create permissions that will effect the GUI + deny access to certain pages.
4. To create predefined roles - that will allow for easy setup of new users.
5. To create custom roles for specific users - allowing them permission sets that are different from the predefined roles.
I'm looking at options for rendering PDFs on the server to avoid the user having to download them (they're big docs) and/or have a PDF reader installed and configured (audience is not tech savvy). The Google Viewer and Scribd are nice examples, but I'm not interested in making the PDFs available on the web (for Google) or storing them on another party's servers (Scribd).
My favorites right now are FlexPaper and PDFWebViewer.NET but I wanted to see if I'm missing any other options. Most of the related SO questions on this topic are somewhat dated, so maybe there's something new?
Any other options to check out?
Can you use FluentHTML or other alternatives in an web application user control?
Can you put a markup file in a System.Web.UI.Control like the System.Web.UI.UserControl but without the burden of the Page object?
I would like to reduce the number of lines of the following code:
[code]....