Ajax in Asp.Net in Visual Studio 2015 Tutorial

Here I'm posting some links hopes that suit for you.

1. http://talkerscode.com/webtricks/check%20username%20and%20email%20availability%20from%20database%20using%20ajax.php  

2.

https://stackoverflow.com/questions/32924271/how-to-check-email-already-exist-in-db-using-ajax 

3.

http://www.codeketchup.com/jquery/check-email-already-exists-jquery-ajax/

4.

http://findnerd.com/list/view/Check-Email-Already-Exists-with-jQuery-Ajax/702/ 

5.

https://wordpress.stackexchange.com/questions/69536/how-can-i-check-email-exists-via-a-jquery-keyup 

Hello

 

Please follow some article for specific requirement :

 

1 . Ajax Instalation and Getting Started 

 

https://docs.microsoft.com/en-us/aspnet/web-forms/overview/ajax-control-toolkit/getting-started/get-started-with-the-ajax-control-toolkit-cs

 

2 . Step by step Ajax tutorial with Asp.net

 

http://ajax.net-tutorials.com/

 

https://www.codeproject.com/Articles/401903/AJAX-for-Beginners-Part-Understanding-ASP-NET-AJ

 

3 . For Crud with ASP.NET

 

http://www.aspdotnet-suresh.com/2015/07/jquery-ajax-gridview-crud-operations-insert-edit-update-delete-in-aspnet-using-csharp-vbnet.html

 

https://www.aspsnippets.com/Articles/ASPNet-jQuery-AJAX-CRUD-Select-Insert-Edit-Update-and-Delete-in-ASPNet-GridView-using-jQuery-AJAX.aspx 

 

4. For Crud with MVC

 

https://dzone.com/articles/crud-operation-in-aspnet-mvc-using-ajax-and-bootst

 

Just follow above step and you will get idea about that

 

Thanks