Indirect reference is being made to assembly System.Web.Extensions version 3.5.0.0

The full error message is: Error 1 Indirect reference is being made to assembly System.Web.Extensions version 3.5.0.0, which contains ‘AjaxControlToolkit.CalendarExtender’. This Project references a prior version of System.Web.Extensions version 1.0.61025.0. To use ‘AjaxControlToolkit.CalendarExtender’, you must replace the reference to System.Web.Extensions with version 3.5.0.0 or higher. After some time finding for the cause, I realize that Read more about Indirect reference is being made to assembly System.Web.Extensions version 3.5.0.0[…]

Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation

The full error message is “Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application.” This is probably due to you using MsgBox(“so message here.”) for your web application. I Read more about Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation[…]

Hide your source code at the browser when hit error

I got a little anxious and embarrassed to see my source code exposed at the browser when I got an error. Managed to find out that this is due to some setting at the web.config. I just need to set debug to false. [sourcecode language=”html”] <configuration> <system.web> <compilation debug=”false” /> </system.web> </configuration> [/sourcecode]