前台绑定（Foreground binding）.docVIP

前台绑定（Foreground binding） ASP.NET foreground binding background variable method summary You often encounter problems in front code that you want to use (or bind) the variable values in the background code. There are %= str% and %# STR% two, here is a summary of. If there are any mistakes or objections, please give us your advice. On the one hand, the front desk usually refers to the background.Aspx file associated with the aspx CodeBehind file name suffix.Aspx.cs; on the other hand, the binding is issued by the user to access a page after the instruction, the server in the implementation process has the code for the assignment. The client then return HTML format display generation, rather than have been shown to the client, and then by other methods (such as Ajax) to the server to obtain the corresponding variables. Note: two documents said above is a common hidden code (code-behind) mode, there is a code embedding (code-beside, inline) model, it is only a ASPX file, and the code is written to the file script type= text/javascript runat= server /script (there are some grammatical difference on this slightly influence on), this paper discusses the problem, because the code embedding is a declarative code and C#/VB.NET code are compiled together into a class, and the code behind declarative code and C#/VB.NET code several separate translation / compilation, so the former is partial and partial (partial) the relationship between the base and the latter the derived class, but this only affects the scope can bind variables (with the modifiers mentioned below). Here are examples of code hiding patterns. In general, background variables may be used in the three position of the front code: Server - side control properties or HTML tag properties JavaScript code Html shows the location of the content (i.e. the start tag and end tag between the content, such as div where /div (Html label) or Label2 asp:Label ID= runat= server Text= Label here (/asp:Label server control), it a