Best Practice: General Asmx Data Loading Web-method Or Multi Web-methods
Apr 3, 2011
which is better approach from performance point of view, is it better to use one web-service method to load data by passing Database Table name and keys or is it better to use separate method for each database table! knowing that i'm using .net asmx through ajax requests.it's obvious that one method is better from OO perspective since it have one function type 'data loading' but what about performance? does IIS affected by that or not? also is it better to make multi web-services 'asmx files' or just one!
I'm searching for some extension methods that helps programming in ASP.NET. Some functions to work on controls, validators, AJAX or programing in C# in general.It could be methods library or your own methods.Do you know any source of those methods (other than CodePlex - that is good source of generic extensions) especially for ASP.NET?
I wrote a schedule app -- in asp.net 3.5 -- used where I work to do all the scheduling, and it actually turned out quiet nice. The issue is, you can only schedule one employee at the time.Each job is one row in a database and equals one employee.We have a lot of jobs that involve multiple employees, so it would be much easier to create one entry that schedules 3 employees for the same job.I've looked at a lot of multi-select dropdowns and combo boxes. Here is what I would like some advice on.
If multi-select selects employee numbers 2202, 2403, and 3610...how is the best way to get that into the database?I'm thinking 2202, 2403, and 3610 get put into an array, and use a loop to add each entry into the database. The database stays the same, and when this gets posted, there are three new entries in the database, one for each of the employees.Am I thinking right or can maybe someone that has done this offer some insight to something that would work better?
I am using master page with content pages. I want to write a genral method to clear textboxes and for dropdownlist set index to 0. Please guide on this.
I have a RESTful webservice. This webservice builds some information (which can take upwards of a couple seconds) and caches the contents.
This works well; however, suppose that many of the same requests come in at about the same time. In our current scenario, each request will build the content before caching. This is obviously not desired as it uses CPU time that could be better served elsewhere. What I would like to do is to suspend/block requests to the same url/cachekey until the content has been built and cached, at which time those other requests will be unblocked and simply fetch the content from cache.
I am not sure the best way. The following are options I have thought about:
Use string.Intern on that cache key and lock. Problem is that this could cause a deadlock if that string is used elsewhere. Use a ConcurrentDictionary and WaitHandle objects to allow other request to lookup in the dictionary if a request is being processed and then "wait" for the request to finish. This would at least give me a timeout capability but I am concerned with the performance of creating many wait handles.
I am a newbie to ASP.NET (but not to C#)I have a project I am developing that may seem unconventional at this point but it is a project that I hope to eventually expand and provide a new type of service on the internet. Currently the project makes use of an Excel spreadsheet that is generated by another application I wrote. Basically the spreadsheet is an index to a specific type of file that exists on a host computer and the files are directly linked from within the excel document. When the link is clicked it opens the file using the operating system default program which then processes the file (this takes some time).
This is fine and dandy but when I click on another file, the default program immediately stops processing one file and opens the latest submission and thus interrupting the previous job. To prevent this I am now writing a queuing application. Here is where ASP.NET comes in. I do not want the link to open the queuing application with the file to add into the queue as a parameter because that pops one or more nnoying/scary "you are opening an executable" dialogs and because I want to be able to access the queuing service from a remote computer, and possibily in the future over the web. Instead I am trying to use an ASP.NET service application that will accept the name of a file as a parameter, access the external queue class (defined in an external dll of which only one universal instance is allowed), and add the request to the queue. Whether or not the table is an excel table or on a web page, using a form in this instance is tedious, not only for me but for a user. I want the user to be able to simply click on an html link and have the file be queued without anything except maybe a confirmation page pop up saying that the file has been queued and it will take x amount of time before the file is finished processing.
My problem is I cannot for the life of me find a way to do this. I have searched the interenet for over a week now looking for a way to call a "WebMethod" using a link and I am getting the impression that it cannot be done. Even when I use a form and try to have the form pass a string (representing the file name) as its "action" it comes up with an application error saying that I am missing the parameter I am trying to pass. Here are some examples of what I have tried:Here an example method I would try to access:
[Code]....
Here is an example of how I tried to access directly by way of a link (which results in an application error: InvalidOperationException)"
Microsoft JScript runtime error: Sys.Net.WebServiceFailedException: The server method 'LoadFile' failed with the following error: System.Threading.ThreadAbortException-- Thread was being aborted.
Some of our users get following error while browsing application :
Error loading postback data: System.Xml.XmlException: Unexpected end of file has occurred. The following elements are not closed. Anyone knows why this error get fires?
Our current application is working fine but when you try to misbehave like we found out that When login with same user in multiple tab with different organization(there is a organization dropdown in the master page which sets the cookie whenever it is changed.) in tab one it is org 1 and tab 2 it is org2 , cookie has the later org 2 in it but when we go back in tab1(which had org1) and save the record org 2 will be saved with the record So can some one share some sort of a checklist with us which address these types of problem.
I was trying to overload two web methods by adding the MessagName descriptor.
[WebMethod(MessageName = "GetFiles")] public [Code]....
But I am getting the following Server Error
Server Error in '/Test.Service' Application.
Service 'TestService' does not conform to WS-I Basic Profile v1.1. Please examine each of the normative statement violations below. To turn off conformance check set the ConformanceClaims property on corresponding WebServiceBinding attribute to WsiClaims.None.R2304: Operation name overloading in a wsdl:portType is disallowed by the Profile. A wsdl:portType in a DESCRIPTION MUST have operations with distinct values for their name attributes. Note that this requirement applies only to the wsdl:operations within a given wsdl:portType. A wsdl:portType may have wsdl:operations with names that are the same as those found in other wsdl:portTypes.
- Operation 'GetFiles' on portType 'TestServiceSoap' from namespace 'http://www.Test.com'.
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: Service 'TestService' does not conform to WS-I Basic Profile v1.1. Please examine each of the normative statement violations below. To turn off conformance check set the ConformanceClaims property on corresponding WebServiceBinding attribute to WsiClaims.None.R2304: Operation name overloading in a wsdl:portType is disallowed by the Profile. A wsdl:portType in a DESCRIPTION MUST have operations with distinct values for their name attributes. Note that this requirement applies only to the wsdl:operations within a given wsdl:portType. A wsdl:portType may have wsdl:operations with names that are the same as those found in other wsdl:portTypes.
- Operation 'GetnFiles' on portType 'TestServiceSoap' from namespace 'http://www.test.com'.
To make service conformant please make sure that all web methods belonging to the same binding have unique names.
I have an ASP.NET 3.5 web application that uses ASMX web services that are called synchronously. I want to see if I can call them asynchronously because some of the web methods take a long time to process and I'm concerned that this is affecting scalability.
I found this article that explains how to use Asychronous web methods, from 2002: http://msdn.microsoft.com/en-us/library/aa480516.aspx. It says:
For asynchronous requests, during reflection the ASMX handler looks for Web methods with a certain kind of signature that it recognizes as being asynchronous. In particular, it looks for a pair of methods that have the following rules:
There is a BeginXXX and EndXXX Web method where XXX is any string that represents the name of the method you want to expose. The BeginXXX function returns an IAsyncResult interface and takes as its last two input parameters an AsyncCallback, and an object respectively. The EndXXX function takes as its only parameter an IAsyncResult interface. Both must be flagged with the WebMethod attribute. When I create the reference to my web service, I don't see any BeginXXX and EndXXX methods. I only see a XXXAsynch method and the article doesn't mention that method. I've done further research and every other article I've found also mentions the BeginXXX and EndXXX web methods.
On my local machine with the default ASP web server I am able to browse my web service's methods, which have with prompts and an invoke button.But when I deploy this same code to an IIS server and I browse the asmx page I just get a descritpion of the methods.
I am using GetMethods() method to get the list of all the available methods in WCF. But it returns everything, how can I only show the methods that I exposed to client.
[Code]....
How can I filter the methods only to WCF Servicecontracts?
given a url that references an asmx how would i go about displaying all of their method names? if assembly="http://.../something/something.asmx" and i was trying to display the method names of that service what should i do now that i have gotten myself this far? i cant seem to find a solution among the hundreds of examples ive looked at
public TestReflection(string assembly) { Assembly testAssembly = Assembly.LoadFrom(assembly);[code]....
What is the best way for authenticating web methods in a web service? Is it right having authentication for every web method and verify user name and password for each web method? Is there a way to authenticate just once not for every web method? something like using sessions and etc?
it may sound a bit newbish question.We have a web service that comunicates with the database and exposes web methods that enables the application to access the database. Each method does only one operation (Insert, Update or Delete). What I need to do is create a transaction that will be consisted of multiple calls to the database, meaning multiple calls of more then one web methods. Can I do that? (I read that if the web method does not throw exception - or ContextUtil.SetAbort() is not called - the transaction will be commited automatically when the web method finishes executing, which I don't want to happen because I want to call another web method in the same transaction, and then manually commit the transaction)
I am coding a classic .asmx web service. The method get data (as a string) from a server, then assign data to an object, then return that object. But I want to cache that object to a XML file for other request. It's because the data from server is not frequently change. Thus, after some minutes, I have to refresh the XML file. When I refresh XML file, I could write object to XML first, then return that object, but that approach maybe slowly.
How can I return the object for client first, then write this to XML file?
What i need to do: When i click button on my .aspx page WCF service should be called, which should return data from ADO.NET entity data model. Entity data model and webservice is already added. I just have to write a method which will return data from data entity.
