Eval and databinder. Eval methods in ASP. NET

BIND is a two-way binding, but can be used only when the data source can be changed. ASP. NET 2.0 improves the Data Binding operation in the template. It simplifies the Data Binding syntax databinder. eval (container. dataitem, fieldname) in v1.x to eval (fieldname ). The eval method, like databinder. Eval, can accept an optional formatted string parameter. Shortened eval syntax and databinder. the difference between Eval is that Eval will automatically parse fields based on the dataitem attribute of the most recent container object (such as datalistitem), while databinder. eval needs to use parameters to specify the container. For this reason, Eval can only be used in the template of the data-bound control, but cannot be used in the page layer. Of course, the ASP. NET 2.0 page still supports databinder. Eval. You can use it in environments that do not support simplified eval syntax.