Objectdatasource updating input parameters
For example, a Sql Data Source might use a parameterized query, like controls I created, which can be downloaded at the end of this article and immediately used in your ASP. In certain scenarios we want to have the current date and time inserted into a particular date/time value. The code we'll be examining is in VB; Eilon's blog entry provides similar functionality, but is written in C#. In the download you'll find a Visual Studio 2005 Solution that includes two projects: skm Parameters, a Visual Basic Control Library project, and Test Website, which is a file system-based website for testing skm Parameters. Control) As Object If Include Time Then Return Date Time. When using the Membership system, the currently logged on user's information can be accessed using Protected Overrides Function Evaluate(By Val context As System. NET 2.0 introduced a number of new Web controls designed for accessing and modifying data.
These controls allow page developers to declaratively access and modify data without writing any code to perform the data access. ) As discussed in previous installments of this article series, ASP. This article is one in a series of articles on ASP. NET 2.0 ships with a number of built-in data source controls that can be used to programmatically access data (the Sql Data Source, Object Data Source, Xml Data Source, and so on). Web Controls Public Class Today Parameter Inherits Parameter Protected Overrides Function Evaluate(By Val context As System. The Sql Data Source and Object Data Source commonly return or modify data based upon parameters. NET 2.0 introduced a number of new Web controls designed for accessing and modifying data. NET 2.0 provide a simple, declarative approach for accessing and modifying data.
These controls allow page developers to declaratively access and modify data without writing any code to perform the data access. The Data Source Control Basics article that kicked off this article series examined how to add data source controls to a page, specify the data to retrieve and/or modify, and bind that data to a data Web control (such as a Grid View, Details View, or Form View).
This article is one in a series of articles on ASP. While point-and-click data access is useful for prototyping and for beginners or hobbyists who have little to no programming experience, wizards and the like are generally frowned upon by more seasoned developers since they typically offer ease of use at the cost of extensibility and customizability. NET 2.0 data source controls, however, provide the best of both worlds, in my opinion - they can be quickly and easily configured to work with data, yet through a myriad of events that are raised during the data source controls' lifecycles, provide the flexibility for use in more advanced scenarios.