What are data sets in visual studio? How can I use it in web application?

I am building a website through Visual Studio with asp.net but when I try to run the index page which is the default.aspx, it generates an Internal Server Error.  

What is the correct configuration in order to run the page correctly?

Help please.

Server Error

Error Summary

HTTP Error 500.19 – Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.

I have Visual Studio 2008 installed on my computer. According to Microsoft “It includes a large library and supports several programming languages which allow language interoperability.” Where can I locate this .Net Framework files in the computer?

Hello Guys I need someone who is using Visual studio.

I have a problem with regards of attempting to add a file to source control using visual studio.

Every time I do that I get this error.

How can I get rid of this one?

Thanks.

Source Control

Source Control: Some of the files or folders in your project have names incompatible with the current system ANSI codepage. These file or folders cannot be controlled until they are named or your Regional and Language Settings are changed to a compatible codepage.

I want to create a complicated “roller” in Silverlight. I plan to have this “roller” that can show me the percentage on how long a user should wait.

It can already determine the percentage of what’s going on.

I just want to add another feature of my “roller” in Silverlight. 

Silverlight only supports asynchronous mode, but I have a project that needs the use of Silverlight and WCF programs.

The problem is that, I can’t make the calls synchronous using the Silverlight application.

How am I supposed to pursue this project using those applications?    

Hello! I recently installed parallels in my Mac and my computer running on Windows 7. Now, I need to install an application that requires NET Framework. While I tried downloading the NET Framework from the Microsoft’s website but I keeps on getting the error message saying “C:UsersAdministratorAppDataLocalMicrosoftWindowsTemporary Internet FilesContent.IE55SOFW5UAdotNetFx40_Full_setup.exe is not a valid Win32 application". Do any of you know how to solve this issue? I really need your help. Thank you.

I am wondering whether there is a tried and tested method that can help me to merge some ASPX pages that I have into one page. At first I was thinking of using an embedded IE but for security reasons I am denied by ASP. I am trying to avoid a situation whereby I would be forced to create a new form – copying all fields and back end CRM code in order to regenerate both pages in the asp.net. I would like the method to perform functions such as taking all the functionality of the contact information and contact notes which am yet to find. Any idea is welcome.

I am working with an application, in which I have to send emails by Lotus notes (.NET).

But, sending emails is possible only when Lotus Notes mail is open.

If I close the program and try to send emails then it doesn’t works.

Please, help to overcome this problem.

I am looking some .NET element by which I can upload multiple files. From Internet I have downloaded many, but none are up to the marks. I want it for very light software with very simple customization. And I can access the source code to modify as I want. Waiting for you suggestions.