what is the use of Eval() in asp.net

Question

What is the use of Eval() in ASP.NET?

Answer 1

While binding a databound control, you can evaluate a field of the row in your data source with eval() function.

For example you can add a column to your gridview like that :

And alternatively, this is the way with eval :

It seems a little bit complex, but it's flexible, because you can set any property of the control with the eval() function :