Updating objectdatasource

Most web applications get data from the middle tier and display it in a nice-looking HTML layout. For example, the Label control in Listing 1 will update its Text property only when it receives a Data Binding event. As a developer, you have the power to trigger data binding events for individual controls (including child controls) or for all controls within a page. Subsequently, any controls with a data binding expression will update themselves.

This common pattern brought framework authors to introduce a semi-automatic mechanism to facilitate the display of data into well-defined UI components. Data binding is the process that retrieves data from a given data source and associates it to attributes of UI elements. I’ll start with simple forms of data binding, then discuss the various types of data source controls and data bound controls. NET data binding is the association between the property of a server control and a server-side calculated value. This code is supposed to use a Label control to display the city that a user selects from a drop-down list. Web Figure 1 shows the results from calling the Data Bind method on the page created with the code in Listing 1 (below).

Reseting an individual item using Reset Item() worked!

From looking over the documentation, the example seems to indicate that Reset Bindings() should be called if I update the underlying collection, instead of the Binding Source directly. I tried the built in mechanism using Property Changed but nothing updated.

Based on type of data, these controls could be divided into two categories: Data source views are objects of the Data Source View class.

Which represent a customized view of data for different data operations such as sorting, filtering, etc.

A design surface and hundreds of controls and components let you rapidly build sophisticated, powerful UI-driven sites with data access.Scott Mitchell April 2007 Summary: This is the Visual C# tutorial.(Switch to the Visual Basic tutorial.) In the interfaces we've created so far, a user can accidentally delete data by clicking the Delete button when they meant to click the Edit button.Connection to data is made through two important properties Connection String and Provider Name.The following code snippet provides the basic syntax of the control: Configuring various data operations on the underlying data depends upon the various properties (property groups) of the data source control.

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