Rowupdating in gridview

To help ensure that a user's inputs are valid, ASP.

NET provides five built-in validation controls that are designed to be used to validate the value of a single input control: For more information on these five controls, check out the Validation Controls section of the ASP. For our tutorial we'll need to use a Required Field Validator in both the Details View and Grid View's Note While ASP.

Similarly, when inserting a new record into a Details View control, those Bound Fields whose (the default) are rendered as empty textboxes, into which the user can provide the new record's field values.

Likewise, Check Box Fields, which are disabled in the standard, read-only interface, are converted into enabled checkboxes in the editing and inserting interfaces.

After setting these three properties of the Required Field Validator, your screen should look similar to Figure 7.

Figure 7: Set the Required Field Validator's After making these changes, open the page in a browser.

Additionally, the page included a Details View whose , thereby always rendering in insert mode.

From this Details View, the user could enter the name and price for a new product, click Insert, and have it added to the system (see Figure 1).

Figure 3: Convert Each of the Details View's and Grid View's Bound Fields Into Template Fields (Click to view full-size image) Converting a Bound Field into a Template Field through the Fields dialog box generates a Template Field that exhibits the same read-only, editing, and inserting interfaces as the Bound Field itself.

The Grid View and Details View controls in the examples we've explored over the past three tutorials have all been composed of Bound Fields and Check Box Fields (the field types automatically added by Visual Studio when binding a Grid View or Details View to a data source control through the smart tag).

When editing a row in a Grid View or Details View, those Bound Fields that are not read-only are converted into textboxes, from which the end user can modify the existing data.

Template Fields, which were the topic of discussion in the Using Template Fields in the Grid View Control and Using Template Fields in the Details View Control tutorials, can consist of multiple templates defining separate interfaces for different row states.

The Template Field's to provide a more foolproof user interface.

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