Turning off Custom Errors in Web.config Asp.net

In today's post i am going to cover "How to Turn off Custom Errors in Web.config in Asp.net ? In the previous tutorials i have explained How to Use Captcha Image in asp.net webfrom,
sealed class ,Abstract class ,Ajax call,Ref and Out Keyword,Autoeventwireup Event in Asp.Net,Bind asp.net dropdown list using jquery  etc.

First upon why custom error comes into picture ?

Here is the answer - Whenever an application is deployed to production or into live server \,there are few changes that your application may contains error.When end users use your application they may get error that your application have.Below screenshot is an basic error example that has occur on production(assume)

From above image a programmer can not able to find the actual cause of this error.To get the detail about error that we need to do is turning off the custom error mode in web.config.

After applying the above change,now user can see the details about error occurred.Below is the example where details about error is shown in browser.

I hope you will enjoy these session on turning off custom error mode in web.config. I would like to have feedback from you. Your feedback, question ,queries or comments  are always welcome.

Thanks.