How is LINQ compiled into the CIL?
For example: var query = from c in db.Cars select c; foreach(Car aCar in query) { Console.WriteLine(aCar.Name); } How would this translate once it is compiled? What happens behind the scenes? ...
asp.net
Prompt to install ActiveX not showing
I've written an ASP.net site that requires the use of a 3rd party ActiveX control. Everything works as expected however when a new user visits the page for the first time they do not get a firts time prompt to install the activeX control. (the yellow bar in IE). Where do i begin troubleshooting ? ...
What are the ramifications of an unconfigured (but working) endpoint?
I have a fully functional wcf service where I can perform CRUD operations using jQuery on the client. I want this small service application to be portable so I am trying to avoid any app or web.config settings (e.g. Specific address endpoints). I have compiled my service application into a small dll file and have tried it in several di...
ASP.NET EntityFramework 4 data context issues
I'm working on a site and there are two projects in the solution a business logic project and the website project. I understand that I want to keep the entity context out of the web project and only use the business objects the framework creates but I can't figure out how to save a modified object this way. Let's say my entity model cre...
How do I insert a new record into a nested child GridView in ASP.NET & VB?
I have a 2 tiered nested GridView in ASP.NET and I'm trying to insert a new record into the child GridView. I am able to Add/Remove/Edit records in the parent table but the child table is connected to my SQL database through the code-behind, so I am unable to use the SqlDataSource control like with the parent table. I have searched aro...
"Server failed to resume the transaction" error in SQL Server 2008 + .NET3.5 + LINQ
The aspx.cs Code: the code itself is pretty big, and the code here is fictional, but it looks (the important part) like this: foreach (Transaction trans in vTransactionList) { switch (trans) { case 201: codehere; break; case 202: codehere; break; case 203: ...
How to prevent firing of last event after page refresh?
Every time I refresh the browser, my button's event handler fires again. How do you prevent this? ...
Second request from Media Player in a web page
I have an ASP.NET web application where a Microsoft Media Player object on the page (in IE) is issuing a request for an .aspx web page. In the page I use TransmitFile to send back the audio file. This works fine most of the time. But, in some cases (a combination of IE version and a specific client, at least from what I can see) there...
Why is ASP.NET MVC asking me to re-authenticate for .PNG files but not .gifs or .jpegs?
What am I missing here??? For some reason, anytime I reference a .png from my application.css file I get prompted for credentials. BUT, I can reference .gifs, .jpegs, etc... from my images directory no problem. Routes are set up right now like this ... public static void RegisterRoutesTo(RouteCollection routes) { routes.Igno...
Features an ASP.NET application structure/code should never miss
I want to know what features in app structure/code should never miss when we build MEDIUM SIZE ASP.NET web application. I.e.: Testing. Logging. Configuration file. CSS(theming). Master page. and so on. Could you please increase the list to see if we find a "never miss" list? Thanks in advance ...
Upload Photos in asp.net
Hello i have the code below to upload pictures for my application. I will like to add a line or more to this code that will display a success message like this"Picture has been uploaded successfully" I know i will need to add a label control to display the message but i dont know how to go about. Here is the code: Imports System.Data ...
C# ASP.NET MasterPage nested inheritance is evil
I have a solution with quite a few different MasterPages / BasePages which all inherit from somewhere else. My problem is that I have a virtual string in BaseMaster, which is overridden by BaseManagement, but when I try to access this string I always get the base value The point of inheriting masters and pages is obviously to avoid havi...
How do I figure out which ASP control is throwing an exception?
I am getting the following exception from my ASP page during rendering: Cannot have multiple items selected in a DropDownList. at System.Web.UI.WebControls.DropDownList.VerifyMultiSelect() at System.Web.UI.WebControls.ListControl.RenderContents(HtmlTextWriter writer) at System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter w...
Is there any way through which i can embed Excel sheet into ASP.Net page?
i need to know that is there any way through which i can embed Excel sheet into ASP.Net as i want to allow user to give multiple records at a time and then can use only single event to insert all those records into the database as i want to avoid event execution for every record ...
Asp.net How can i get the transaction history of paypal account on my website using paypal email id and password
Asp.net How can i get the transaction history of paypal account on my website using paypal email id and password.As I want to Import the Paypal transaction logs in my website for financial management on my site... ...
Asp.Net required field validation
Hi I need to validate two fields in an Asp.net form, where the requirements is like any one of them is required. For example, there is Page title and sub-heading input boxes, so any one of them is required. Can I do it using the validation controls Asp.Net provides? Any kind of help is greatly appreciated. Thanks in advance. ...
form file post to web service method not working
I am trying to have a HTML form post a file to a Asp .Net Web service method. Everything seems to work but there is no form or files on the request object in the web method. any ideas? Html Form <form id="formPost" action="service/Post" enctype="multipart/form-data" method="post"> Post File <input id="uploadfile" type=file /> ...
Application_Error exceptions handling, redirection infinite loop and CSS loading problem.
Hello, I have error handling in Application_Error event of globals.asax file. Inside this event, I'm using Response.Redirect(~errorview.aspx) method, for redirection to site which is able to handle errors in user friendly way. Everything works fine, unless exception is rising in Application_Start event. When error occurs there, my ap...
how to force download dialog for a text file on the server?
how to force download dialog for a text file on the server? when i used the blow code so the dialog window was for aspx file ... (why?) string FileBankPhysicalFolder = Server.MapPath("~/FileBanks/"); string Name = "FileBank_" + "Melli_" + Session["Co_ID"].ToString() + "_" + RadcbDateOfPardakht.SelectedValue.Replace('/',',') + "...
How to add more than 1 class to an element in ASP.NET?
I'm trying to programatically add a second class to a <td> element in C#. The element I want to add the class to already has a class assigned to it. If I do something like myObject.CssClass = "MyClass"; it simply overwrites the original class. I suppose I could do something like myObject.CssClass += " MyClass"; but that's ugly.....