Data annotation in c#

Hi

Plz refer this.

http://www.dotnetfunda.com/articles/show/3199/csharp-data-annotations/

Hi ,

if you talking about only validation case then

its not mandatory to use Data annotation . you can use client side validation using javascript or jquery.

for server side validation you have to use Data annotation ,

chek this

http://www.asp.net/mvc/overview/older-versions/mvc-music-store/mvc-music-store-part-6

Refer : http://www.dotnet-tricks.com/Tutorial/mvc/F16Q301112-Server-Side-Model-Validation-in-MVC-Razor.html

Please go through below links:

http://www.codeproject.com/Articles/754840/A-Beginners-Tutorial-for-Understanding-and-Impleme

http://www.dotnet-tricks.com/Tutorial/mvc/D8I4270712-MVC-Data-Annotations-for-Model-Validation.html

https://joeylicc.wordpress.com/2013/06/20/asp-net-mvc-model-validation-using-data-annotations/