Explain Eval method? why we use?

Hello

What is eval() function ?

Eval() method in asp.net is generally used to bind database values into server controls in asp.net like asp.net textbox and other controls , inside datagrid , gridview etc ..

Syntax of eval is as follow :

"server" ID="txt1" Text='<%# Eval("FirstName") %>'

So this way you can bind first name to textbox txt1 from database

Still you can follow few articles for that :

https://www.aspsnippets.com/Articles/Difference-between-Eval-and-Bind-functions-in-ASPNet.aspx

https://www.codeproject.com/Articles/623516/The-Evil-of-Eval-in-ASP-NET

https://forums.asp.net/t/1867568.aspx?How+to+do+a+Eval+in+C+

Just try to use any table and do simple select operation , than you can see the actual use of eval()

Thanks

2 Replies

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Nanddeep Nachan8y ago
Eval is used to bind to an UI item that is setup to be read-only (eg: a label or a read-only text box), i.e., Eval is used for one way binding - for reading from a database into a UI field.
It is generally used for late-bound data.
0
Manav Pandya8y ago
Hello

What is eval() function ?

Eval() method in asp.net is generally used to bind database values into server controls in asp.net like asp.net textbox and other controls , inside datagrid , gridview etc ..

Syntax of eval is as follow :
"server" ID="txt1" Text='<%# Eval("FirstName") %>'
So this way you can bind first name to textbox txt1 from database
Still you can follow few articles for that :

https://www.aspsnippets.com/Articles/Difference-between-Eval-and-Bind-functions-in-ASPNet.aspx

https://www.codeproject.com/Articles/623516/The-Evil-of-Eval-in-ASP-NET

https://forums.asp.net/t/1867568.aspx?How+to+do+a+Eval+in+C+

Just try to use any table and do simple select operation , than you can see the actual use of eval()

Thanks
+1