In general, using embedded code blocks for complex programming logic is not a best practice, because when the code is mixed on the page with markup, it can be difficult to debug and maintain. Uses for Embedded Code BlocksĮmbedded code blocks are supported in ASP.NET Web pages primarily to preserve backward compatibility with older ASP technology.

For example, if the page's Page directive contains the attribute language='VB', the page will use the Visual Basic compiler to compile code in any script block marked with runat='server' and any in-line code in delimiters. Įmbedded code blocks must be written in the page's default language. In embedded code blocks, the syntax is used to resolve an expression and return its value into the block. The following code example shows an embedded code block that displays the value of a public GetTime() function inside a span element. The following code example shows an ASP.NET page with an embedded code block that displays the results of a loop. The code in the block can execute programming statements and call functions in the current page class. Embedded Code BlocksĪn embedded code block is server code that executes during the page's render phase. For example, you can display information on the page from code by setting the Text (or other) properties of controls.Īnother possibility is to embed code directly into the page using an embedded code block. The code you write typically interacts with controls on the page. The default model for adding code to an ASP.NET Web page is to either create a code-behind class file (a code-behind page) or to write the page's code in a script block with the attribute runat='server' (a single-file page).

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