Gridview rowupdating commandfield

21-May-2017 04:38 by 8 Comments

Gridview rowupdating commandfield

While this exception can be gracefully handled as demonstrated in the previous tutorial, ideally the editing or inserting user interface would include validation controls to prevent a user from entering such invalid data in the first place.

You can verify this by visiting this page through 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).

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.

Specifically, this tutorial takes the example created in the Examining the Events Associated with Inserting, Updating, and Deleting tutorial and augments the editing and inserting interfaces to include appropriate validation.

In the Examining the Events Associated with Inserting, Updating, and Deleting tutorial we created a page that listed the names and prices of the products in an editable Grid View.

s of those validation controls that detected invalid data.

This summary data can be displayed as text on the web page or through a modal, client-side messagebox.

NET 1.x had these same five validation controls, ASP.

NET 2.0 has added a number of improvements, the main two being client-side script support for browsers other than Internet Explorer and the ability to partition validation controls on a page into validation groups. To accomplish this, click on the Edit Templates link from the Grid View's smart tag to bring up the template editing interface.

While the default editing and inserting interfaces for the Bound Field and Check Box Field can be helpful, the interface lacks any sort of validation.