ecological updating - Rowupdating in gridview in asp net c

The Compare Validator's Figure 8: An Asterisk Appears Next to the Textboxes with Invalid Input (Click to view full-size image) While the validation works as-is, the user has to manually remove the currency symbol when editing a record, which is not acceptable.

To remedy this, we have three options: Statement (Click to view full-size image) With this change, the formatted price in the editing interface includes commas as the group separator and a period as the decimal separator, but leaves off the currency symbol.

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.

rowupdating in gridview in asp net c-40

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.

In order to provide a customized editing or inserting interface, we need to replace the Bound Field or Check Box Field with a Template Field.

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.

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.Let's enhance this tutorial to include a client-side messagebox summarizing any validation problems.To accomplish this, drag a Validation Summary control from the Toolbox onto the Designer.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.If you attempt to omit the name or enter an invalid price value when editing a product, an asterisk appears next to the textbox.

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