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• Modifying a column with the 'Identity' pattern is not supported in WCF RIA Services

  - by Banford

  I've been following the walkthrough for creating your first WCF RIA Services Application from Microsoft and have encountered a problem when trying to edit and update data using the SubmitChanges() method of the Data Context. The table being updated has an Identity Specification set in SQL Server 2008 on the 'CourseID' column. However the PRIMARY key is a composite of two other fields. When using SubmitChanges() the application locks up in the browser an presents an unhandled exception. By handling this exception I managed to get the message: Modifying a column with the 'Identity' pattern is not supported. This is referring to the 'CourseID' column. Turning identity specification off solves the problem, but I need the auto-incrementing ID. In what way isn't this supported. Or where am I going wrong?

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• Problem with a test method in Yii web services

  - by Conrad

  Hi There, Is there anyone here who might be familiar with web services in the yii framework? I declared the following test method: /** * Send a single SMS message * * @param string $username Username * @param string $password Password * @param string $identifier Valid Identifier to use * @param string $mobileNumber Mobile Number to send message to * @param string $message Message to send * @return string 'OK' on success, error message on failure * @soap */ public function singleSms($username, $password, $identifier,$mobileNumber, $message){ return "username=$username, pwd=$password, source=$identifier, mobno=$mobileNumber, msg=$message"; } But when I try to call this method I get the following response: - - WSDL - SOAP-ERROR: Parsing WSDL: Couldn't load from 'http://sms.chillnethosting.co.za/index.php?r=sms/webservice' : Start tag expected, '<' not found The WSDL generates when I call my URL: Web Service URL Any Ideas?

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• POX return data from WCF Data Services

  - by keithwarren7

  I am using WCF Data Services (netfx4) to provide data sourced from SQL via EF, the standard OData mechanism is fine and JSON works as well but I need a third option for generic POX (plain old xml). I have yet to come across a simple strategy or switch that allows me to control this but I am sure one must exist or a workaround method might be available. Any ideas? Ideally I would like to be able to use something like the JSONP option wherein I append 'format=JSON' to the URL, in this case 'format=pox' or 'POX=true' or something of that nature.

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• Silverlight 4 accessing WCF Data Services: BeginInvoke frustrations.

  - by Gatmando

  Hi, I'm attempting to follow a pattern for performing WCF data service queries using the Silverlight 4 beta. The following is my code: public CodeTables() { CodeCountries = new ObservableCollection<dsRealHomes.CodeCountries>(); dsRealHomes.RealHomesEntities myClient = null; myClient = staticGlobals.RealHomesContext(); object userState = null; myClient.BeginExecute<dsRealHomes.CodeCountries>(new Uri("CodeCountries"), (IAsyncResult asyncResult) => { Dispatcher.BeginInvoke( () => { var test = myClient.EndExecute<dsRealHomes.CodeCountries>asyncResult).ToList(); } ); }, userState); } This is derived from a number of examples I've come across for WCF data services with silverlight. Unfortunately no matter how I try to implement the code i end up with the following error on 'Dispatcher.BeginInvoke': 'An object reference is required for the non-static field, method, or property (System.Windows.Threading.Dispatcher.BeginInvoke(System.Action)' Thanks

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• Web Services vs Persistent Sockets

  - by dsquires

  I plan on doing a little benchmarking around this question, myself. But I thought it would be good to get some initial feedback from "the community". Has anyone out there done any analysis regarding the pros and cons of these two technologies? My thoughts: Opening and closing TCP/IP connections for web service calls is relatively expensive compared to persistent connections. Dealing with intermittent connection errors and state, etc... would be easier with a web service based framework. You don't see World of Warcraft using web services. One question that I can't seem to find much of answer for anywhere (even on here)... are the limits on the # of persistent connections a single network card can support, etc?

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• Reporting Services is displaying extra rows for minimised row groups

  - by Graphain

  Hi, I have a fairly basic SQL Server Reporting Services report that is using nested row groups. Each sub-group depends on expanding its parent to be visible which is all pretty standard. The layout is something like this: { Company { { Car SUM(Price) { { { Part Price My desired result when expanded is something like this (which I get fine): - SuperCarCompany - SuperCar 20 Door 20 - SuperCar2 70 Door 30 Window 40 - OtherCarCompany - SuperCar2 50 /* Same SuperCar2 */ Door 50 - MoreCarCompany - BestCarEver 535 Engine 500 Door 30 Window 5 And when opened initially something like this: + SuperCarCompany + OtherCarCompany + MoreCarCompany However, I'm getting this: + SuperCarCompany + SuperCar2 70 (i.e. sum of all SuperCar2) + OtherCarCompany + SuperCar 20 + MoreCarCompany + BestCarEver 535 and I can even expand these superfluous rows like this: + SuperCarCompany - SuperCar2 70 (i.e. sum of all SuperCar2) Door 30 (i.e. first child of any SuperCar2) The superflous rows dissapear immediately when I expand the expected row above it (i.e. I'd need to expand all expected rows to get rid of all superflous rows). Any idea on the cause?

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• Reporting services - custom library is not working after installing report on production Server

  - by niao

  Greetings, I created a report which uses custom library created by me. I've copied these libraries to the following folders: c:\Program Files\Microsoft SQL Server\MSSQL.3\Reporting Services\ReportServer\bin\ c:\Program Files\Microsoft Visual Studio 8\Common7\IDE\PrivateAssemblies\ Everything works find when I run the report using Visual Studio. When I install it on Production Server (where these dlls were also copied) the following error is returned: Failed to load expression host assembly. Details: The type initializer for 'MyParserForReportingServices.MyParser' threw an exception. (rsErrorLoadingExprHostAssembly) Can someone please help me?

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• Java Jersey RESTful services

  - by pHk

  Rather new to REST and Jersey, and I'm trying out some basic examples. I've got one particular question though, which I haven't really found an answer for yet (don't really know how to look for this): how would you go about storing/defining common services so that they are stateful and accessible to all/some resources? For instance, a logger instance (Log4J or whatever). Do I have to manually initialize this and store it in the HttpSession? Is there a "best practice" way of doing this so that my logger is accessible to all/some resources? Thanks a lot.

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• Analysis services with non normalized table

  - by Uwe

  I have a table with several million rows. Each row represents a user session. There is a column called user which is not unique. There can be multiple sessions per user. I want to use Analysis services to get me the additional properties per user. Example: How many users (unique!) had a session longer than x minutes. How is that possible without changing the database. Note: there is no lookup-table and I cannot create one. What I am able of at the moment is to ask how many sessions were longer then x minutes.

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• Ideal way to deliver large data over Web Services

  - by zengr

  We are trying to design 6 web services, which will serve another client component. The client component requires data from the web service we are implementing. Now, the problem is, there is not 1 WS we are implementing, there is one WS which the client component hits, this initiates a series (5 more) of WSs which gather data from their respective data stores and finally provide the data back to the original WS, which then delivers the data back to the client component. So, if the requested data becomes huge, then, this will be a serious problem for our internal communication channel. So, what do you guys suggest? What can be done to avoid overloading of the communication channel between the internal WS and at the same time, also delivering the data to the client component.

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• sql server 2005 reporting services-- how to use multiple datasets in report

  - by larryq

  Hi everyone, I'm new to SQL Server reporting services, and am trying to decipher an existing report. It's nothing too bad, but I notice it does have two report datasets defined. (They are generated via separate stored procedures) I'm trying to figure out where and how the report datasets are linked together so the Fields collection has both sets of columns available and the report has a single rowset to traverse. Is there a section in the report layout where a joining of datasets is defined? I'm using Visual Studio 2005 to design and preview the report fwiw. Thanks for your help!

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• Create Sum of calculated rows in Microsoft Reporting Services

  - by kd7iwp

  This seems like it should be simple but I can't find anything yet. In Reporting Services I have a table with up to 6 rows that all have calculated values and dynamic visibility. I would like to sum these rows. Basically I have a number of invoice items and want to make a total. I can't change anything on the DB side since my stored procedures are used elsewhere in the system. Each row pulls data from a different dataset as well, so I can't do a sum of the dataset. Can I sum all the rows with a table footer? Similarly to totaling a number of rows in Excel? It seems very redundant to put my visibility expression from each row into my footer row to calculate the sum.

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• Building highly scalable web services

  - by christopher-mccann

  My team and I are in the middle of developing an application which needs to be able to handle pretty heavy traffic. Not facebook level but in the future I would like to be able to scale to that without massive code re-writes. My thought was to modularise out everything into seperate services with their own interfaces. So for example messaging would have a messaging interface that might have send and getMessages() as methods and then the PHP web app would simply query this interface through soap or curl or something like that. The messaging application could then be any kind of application so a Java application or Python or whatever was suitable for that particular functionality with its own seperate database shard. Is this a good approach?

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• Free version control services?

  - by thr

  What free version control service would you recommend? I'm not looking for a complete project management service like Sourceforge, just something so I don't have to run a SVN/GIT server myself.

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• Silverlight datagrid don't show any data with anonymous query RIA services

  - by user289082

  Hi all! I have an anonymous linq query that I bind to a datagrid, when I debug it brings alright the data but it doesn't show in the datagrid, I suspect that the request to RIA services isn't completed before I bound it to the datagrid. I could use the LoadOperation<() Completed event. But it only works with Defined Entities so how can I do that? For reference here is the last post: http://stackoverflow.com/questions/2403903/linq-query-null-reference-exception Here is the query: var bPermisos = from b in ruc.Permisos where b.IdUsuario == SelCu.Id select new { Id=b.Id, IdUsuario=b.IdUsuario, IdPerfil=b.IdPerfil, Estatus=b.Estatus, Perfil=b.Cat_Perfil.Nombre, Sis=b.Cat_Perfil.Cat_Sistema.Nombre }; I'm a totally newbie sorry if is a very simple question. Thanks!!

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• Updating/Inserting multiple rows using jQuery and OData (WCF Data Services)

  - by Pieter

  I have three tables, Template, Fields and TemplateFields. TemplateFields holds the selected fields for each template. I need to update TemplateFields when the user is finished selecting the fields. The only way I can see to do this is by deleting all the TemplateFields for that Template and then add them one by one in separate requests. This is really bad because there is not transaction to fall back onto and there will also be MANY requests. Is there a way of adding multiple 'objects' at once using WCF Data Services? I can then use an Interceptor to update the database.

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• RIA Services - Two entity models share an entity name

  - by Alex

  I have two entity models hooked up to two different databases. However, the two databases both have a table named 'brand', for example. As such, there is a naming conflict in my models. Now, I've been able to add a namespace to each model, via Custom Tool Namespace in the model's properties, but the generated code in my Silverlight project will try to use both namespaces, and come up with this, Imports MyProject.ModelA Imports MyProject.ModelB Public ReadOnly Property brands() As EntitySet(Of brand) Get Return MyBase.EntityContainer.GetEntitySet(Of brand) End Get End Property giving me this exception: 'Error 1 'brand' is ambiguous, imported from the namespaces or types 'MyProject.ModelA,MyProject.ModelB'. Has anyone had experience with naming conflicts like this using RIA services? How did you solve it?

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• WCF Web Services - Multiple Hop impersonation on the same server

  - by Lerxst

  Hi Folks I have 3 web services, all located on the same server. My Client calls Service A, which impersonates the client to call Service B, and all is well. Now, I want to impersonate the caller of service B (which is my username) to call Service C. When I use the same technique as before (AllowedImpersonationLevel = Impersonate, user.Impersonate()), The user doesnt get passed to service C. Instead, Service C sees the user as the user I am running it under in IIS. Is there anything special I need to do to get this working? Is this a delegation issue? (I thought it would not be delegation because they are all on the same server) Thanks SO!

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• Reporting Services Textbox Format Question

  - by coson

  Good Day, I am creating a report with Reporting Services and am using several text boxes horizontally aligned next to each other. I would like to put periods so that report looks like: 1234 Robert Jones................... (234) 921-4922 1235 Jennifer Wilson................ (919) 582-2914 Is this possible to right-pad the text box with periods, or would I need to roll out some code to accomplish the above effect. I tried doing this and the results looked like: 1234 Robert Jones............... (234) 921-4922 1235 Jennifer Wilson.......... (919) 582-2914 Is something like this even possible? TIA, coson

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• Ria Services loading foreign keys with Linq-to-SQL

  - by Stephan

  I have a database that consists of 5 tables : Course, Category, Location, CourseCategories, and CourseLocations. The last 2 tables just contain the two foreign keys. A Course has many-to-many relationships with both category and location. I am trying to load the data into a Silverlight app using Ria Services. My DB model is Linq-to-SQL. I have tried adding the [Include] attribute to the metadata classes and I have added the DataLoadOptions so it should load the all tables when you ask for a Course. However on the client side I am never getting back any entries in the CourseCategories and CourseLocations properties. What else needs to be done to get the foreign key relationships to exist across the serialization.

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• Are there scenarios where WCF RIA Serivces isn't a good choice ?

  - by data

  Since Silverlight 4 Microsoft recommends the usage WCF RIA services for business applications. Are there scenarios, where the WCF RIA serices should no be used and plan WCF services or webservices or other techniques are the better choice ?

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• Using Report (Reporting Services) parameter values in ASP.NET page

  - by noup

  I have a report (Reporting Services) integrated into an ASP.NET that shows dropdownlists to select report parameter values. The dropdownlists are populated using direct database selects, though I see the report RDL files do contain the paramter values and datasets as defined in the report designer. Is it possible to obtain the report parameters "available values" in ASP.NET to populate the dropdownlists? This would avoid some code duplication. Update If the parameter doesn't use a query for available values, the following works: foreach (ValidValue value in this.ReportViewerControl.ServerReport.GetParameters()["myParameter"].ValidValues) { this.DropDownListControl.Items.Add(new ListItem(value.Label, value.Value)); } Still haven't found a way to access report datasets though...

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• Design interoperable web services

  - by Zyd

  Hi everyone, I'm designing a set of web services to allow our clients to connect from their apps to one of our systems. Our clients have their apps developed in all varieties of frameworks (.NET, Java, PHP, Python and even the occasional all JS app), so obviously WS is the way to go. Investigating a little about truly interop WS I've found that the way to go is to design first the WSDL and XSD and derive the implementations from there. What i'm really looking for is guidance if this is really the way to go. I've read that WCF creates interoperable WS but i'm not a fan of MS creating something standard. Should i use WCF or there is a good set of tools for designing WSDL and XSD without the pain i'm expecting. Thanks in advance

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• Windows Services -- High availability scenarios and design approach

  - by Vadi

  Let's say I have a standalone windows service running in a windows server machine. How to make sure it is highly available? 1). What are all the design level guidelines that you can propose? 2). How to make it highly available like primary/secondary, eg., the clustering solutions currently available in the market 3). How to deal with cross-cutting concerns in case any fail-over scenarios If any other you can think of please add it here .. Note: The question is only related to windows and windows services, please try to obey this rule :)

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• Easy way for Crystal Reports to MS SQL Server Reporting Services conversion

  - by scoob

  Is there a way to easily convert Crystal Reports reports to Reporting Services RDL format? We have quite a few reports that will be needing conversion soon. I know about the manual process (which is basically rebuilding all your reports from scratch in SSRS), but my searches pointed to a few possibilities with automatic conversion "acceleration" with several consulting firms. (As described on http://www.microsoft.com/sql/technologies/reporting/partners/crystal-migration.mspx). Do any of you have any valid experiences or recomendations regarding this particular issue? Are there any tools around that I do not know about?

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