Difference Between Eval and Bind in Asp.Net

The Eval function is used to define one-way (read-only) binding.

The Bind function is used for two-way (updatable or read/write) binding.

In addition to calling Eval and Bind methods to perform data binding in a data-binding expression, you can call any publicly scoped code within the <%# and %> delimiters to execute that code and return a value during page processing.

Reference: https://msdn.microsoft.com/en-us/library/ms178366.aspx