I am not able to catch the databing mechanism when used with LINQ.I am able to populate the data correclty agaisnt my comboboxes. the thing I am not able to catch is when changing an item in the dropdownlist and set the focus on some other control in my form, the combobox resets to its original value. this way I am not able to send changes back to the database.ave you got any solution, or you need more explanation?:)
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i am using the combobox ajax control i in design time i am having an error:
there was an error rendering the control. Request is not available in the context.
I have question about N-tier architecture. everyone about 3-Layer architecture these are:
1). UI Layer,
2). Business Layer,
3). Data Access Layer.
i already have worked on this.
Then i heard about LINQ to sql. how many layer an web application should contain.
As my knowledge. if i use LINQ to slq then i have to worked only 2-Layer:
- Data Acess/Business Layer: which contains only *.dbml files which is my database and
- UI Layer: which contains *.aspx files.
how can i install linq in my visual studio 2008.
View 2 RepliesI'm trying to install LINQ to SQL Debug Visualizer on Visual Studio 2010 Professional on a x64 Windows7 machine.I've downloaded SqlServerQueryVisualizer.dll assembly from following locationhttp://www.scottgu.com/blogposts/linqquery/SqlServerQueryVisualizer.zipand copied assembly to C:Program Files (x86)Microsoft Visual Studio 10.0Common7PackagesDebuggerVisualizers
View 1 RepliesI have question about N-tier architecture. everyone about 3-Layer architecture these are:1). UI Layer, 2). Business Layer, 3). Data Access Layer.i already have worked on this.Then i heard about LINQ to sql. please tell me how many layer an web application should contain. As my knowledge. if i use LINQ to slq then i have to worked only 2-Laye
View 9 RepliesIn some of my new websites under .NET 4.0 my Visual Studio does not recognize System.Linq as a valid class. I need to add a reference to System.Core in Web.Config to solve this but there are projects where this is not needed.
View 8 Repliesis it possible to convert whole visual studio 2008 web site project to visual studio 2010 web site project
my current project references
i have a very annoying iis problem
iis server stops working until app pool is recycled
i am hoping that new visual studio (net framework 4.0) may solve this very annoying unsolveable problem
I have an MVC 2 web application which uses models auto-generated by LINQ. When I add a Silverlight project to my solution, generating a new strongly-typed View fails with the message:
Compiling transformation: The type or namespace name 'Data' does not exist in the namespace 'System' (are you missing an assembly reference?). I understand this is most likely because Silverlight does not access the System.Data namespace (at least, I can't add the reference to my Silverlight app). However, it's not really important - I'm just trying to generate an .aspx View at this stage, not a Silverlight View.
Is there any way to get this template generation to work, or do I have to create my Silverlight project outside the solution and build it separately? I was kind of hoping to take advtage of WCF RIA and some of the other goodies one gets from including the Silverlight app within the main solution... anybody got a fix?
Using System.Linq; namespace does not supportted in VS2005 version 2.00.
View 1 RepliesI can't believe I'm having so much trouble finding this information. I'm endeavouring to learn about creating model classes with Linq to SQL. By default VS2010 wants to use SQL Express, but our organisation has several database servers for development so I'd rather use one of those. PLEASE can somebody tell me how I can configure VS2010 to do that, as all I get is 'A network-related or instance-specific error occurred while establishing a connection to SQL Server ... Verify that the instance name is correct'. Yeah, thanks Microsoft. Actually telling me how to verify the instance name would be a really good move here.
View 1 RepliesAnyone know if I can maintain a VS 2008 (.net 3.5) project by using the VS 2010 IDE ?
View 1 RepliesThis problem is trivial to duplicate. Do any query on a table which contains a timestamp / rowversion column. Set a breakpoint and examine the resulting query in the Linq to SQL visualizer. Click on Execute which displays the results in a DataGridView. For each row you get "System Argument Exception: Parameter is not valid" when it tries to display the timestamp / rowversion in the grid. What is most annoying is that there is no way to get out of the visualizer without going to Task Manager and killing the Visual Studio process, devenv.exe.
This is definitely a bug. How can you presume to be able to display a database query when you can't display an essential datatype like timestamp / rowversion? Is there any way around this ? I would like to add that in general the CLR is woefully inadequate in the way it handles timestamp / rowversion fields. It would be nice if they could be defined, copied, compared, displayed and serialized in some standardized automatic way.
I'm databinding a radiobuttonlist with a LINQ query like so:
var query = from m in Db.Udt_Menu
orderby m.Name
select m;
this.radMenuSelection.DataValueField = "menuID";
this.radMenuSelection.DataTextField = "name";
this.radMenuSelection.DataSource = query;
this.radMenuSelection.DataBind();
However, when i want to update the record I need to set the selectedindex of the radiobutton to a value from the database. There is a table called udt_PageMenuSelection which has a column called menuID which is a foreign key to udt_Menu.menuID.
When i want to update an existing record, how do i set the selectedindex of the radiolist to the value equal to udt_PageMenuSelection.menuID ?
Do I need to do an additional query?
where to find/download visual source safe plug in or visual source safe client for visual studio 2005 IDE?
I do not want to install visual source safe 2005 server.
Is it possible to migrate the application which is in visual studio 2003 to visual studio 2010. provide me details about how to migrate.
View 2 RepliesI have a site in production developed in 2005 and i am planning to migrate to Visual studio 2010. Is there an easy way to do it?
View 1 RepliesI have a user control with a datalist. I just want to do some simple binding but keep getting an object reference not set to an instance of an object error. The following is the code, I am sure I am just missing something simple:
Dim dc As Forms.DataClassesDataContext = New Forms.DataClassesDataContext
Dim formQuery = From fq In dc.v_form_questions _
Where fq.FormTypeID = FormTypeID _
[code]...
When I debug, I see values for the formQuery; I am also able to loop through the formQuery and response.write a field out, however every time I try to bind it to a databound control, I get the Object reference not set to an instance of an object error.I initally was using a simple LinqDataSource object, but needed to set the where parameter to the FormTypeID property of this usercontrol. I had a Where condition defined on Page Init, but started getting the object reference error.
how can I display a linq query in a gridview that has data from multiple tables AND allow the user to edit some of the fields or delete the data from a single table?
I'd like to do this with either a linqdatasource or a linq query. I'm aware I can set the e.Result to the query on the selecting event. I've also been able to build a custom databound control for displaying the linq relations (parent.child).
However, I'm not sure how I can make this work with delete? I'm thinking I may need to handle the delete event with custom code.
I want to use a source control in VS2010, I know my best bet is TFS, but at the moment TFS(can't afford ). As i understand TFS is the new VSS_2005(can afford)Can VSS 2005 be use as a source control for VS 2010 solutions/projects?
View 2 RepliesI've noticed that VS2008 removes the "none" option in the properties -> connection dropdownlist after you have modified a LinqToSql class where the "none" option was previously specified.So if i create a LinqToSql class, drag some db tables in, then set the connection to "none" in the properties window, save, then make a change to the db tables i've dragged into the class, i can't get it to go back to "none" again.I've noticed this behavior sporadically, not all the time. Havent isolated when it happens yet.The none option is required if you want to save your connection string in the web.config, and not in the designer.cs class or the .dbml file.
View 2 RepliesI just recently upgrade my asp.net web project from visual studio 2005 to visual studio 2010. The upgrade was successful with no problems however im missing some features with this project. The One Click Publish feature(which is greyed out) in the header area of Visual Studio 2010 and the Add Config Transforms feature which is no where to be seen when you right click on web.config. When i create a new web project straight from visual studio 2010, these options work fine.
View 1 RepliesVisual Studio 2010 Beta 2 locked up, and when I tried to restart it, it wouldn't load, so I did a devenv.exe /resetuserdata to get it going again. It reset everyhing in my options of the web app/ etc, and now some AJAX conrols don't work such as dragpanel. I assume that it is because something got reset that I haven't enabled again, but can't figure it out.
View 2 RepliesIm working on a website project with Visual Studio 2010 from 2 different computers (home & work).
In Dreamweaver Im used to FTP to upload/download files to/from a webserver to syncronice my files on the current computer Im working on.What is best option in Visual Studio 2010 to sync project files between home & work computers? I have seen there is a built in FTP, but seems only it can upload files, limited functionality?
can Visual Studio 2008 be All-In-One tool to integrate source code continuously from team members, build, unit test?
Having used Visual Studio Team Edition 2005, unit testing each method within VS itself. I strongly believe that it is feasible to add-on tools. Example ankhsvn tool to use SVN from Visual studio [URL]
In my investigating i have come across number of tools(shown below) to use with Visual Studio 2008 professional
Development tool:- Visual Studio 2008 professional using Subversion as source control tool. Continuous Integration:- Hudson or Cruise control Build tool:- NAnt Testing:- NUnit, Selinium As Visual Studio 2008 can be used for unit testing I think NUnit is out of consideration.
In the same way i would like to have any other tools/add-ons to Visual studio to implement continuous integration, building and unit testing. This process should be automated such a way source code between team members is continuously integrated, built and unit testing is done as configured.
Objective is to use few number of tools as add-on to Visual Studio or achieve most from Visual studio itself (example unit testing). Visual Studio should be all in one tool.
I am aware that Team Foundation Server best suits my requirement, but it is out of scope due to its cost.
