Updating a web page
Clearly, you have to know the order to pass the parameters in.
(In Web Matrix, Intelli Sense can help you learn figure out the name, type, and order of the parameters.) As an alternative to passing values in order, you can use Named parameters are handy for a couple of situations, especially when a method takes many parameters.
Obviously, to use named parameters, you have to know the names of the parameters.
Web Matrix Intelli Sense can , since errors will be displayed in the validation summary.
This part of the process works almost exactly like the page you created in the previous tutorial, so much of this tutorial will be familiar. NET operator that represents the current website root.) The result is that this part of the markup in the column simply produces something like the following markup at run time: will be different for each row. The three columns you originally had in the grid displayed only data values (title, genre, and year).
There are several ways you could implement a way to edit an individual movie. You specified this display by passing the name of the database column — for example, Tip Named Parameters and Positional Parameters for a Method Many times when you've called a method and passed parameters to it, you've simply listed the parameter values separated by commas.
In this tutorial we will work through the process, with the Event Source object handling received data and writing it to the page.When you get to the page, clear the Genre field (or Year field, or both) and try to submit your changes. You'll see an error, as you'd expect: Click the Return to movie listing link to abandon your changes and return to the @grid. One is when you want to pass only one or two parameters, but the values you want to pass are not among the first positions in the parameter list.Another situation is when you want to make your code more readable by passing the parameters in the order that makes the most sense to you.