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NET 2.0 Grid View control allows us to quickly edit and delete records.However, most of the real world cases call for validating the data being edited or deleted. Drag and drop an SQL Data Source control on the web form.

You should see an error message as shown in Figure 7.

We will use the Custom Validator control for this purpose.

Just like we attached the Required Field Validator control to the Text Box, attach a Custom Validator to the Contact Name column. If you run the web form and try entering wrong value in the Contact Name column then you will see the error message displayed as before and the value will not be accepted by the Grid View control.

Set the Control To Validate and Error message properties to the appropriate values. Up till now we used the validation controls to validate Grid View input on client and server side.

Double click on the Custom Validator control to go into the Server Validate event handler and write the following code in it. However, at times you many need more control and flexibility than that is provided by validation controls.

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  1. Continuing my GridView Tips and Tricks series, this post shows how to cancel the Update and Delete operation in an GridView. To cancel an update and delete operation, we will make use of the RowUpdating and RowDeleting events. The events are as described below RowUpdating - Occurs when a.

  2. Nov 10, 2014. This example shows how to edit and update records in a GridView in

  3. Aug 24, 2006. For a while now I'm trying to figure out why my method, triggered by the GridView. RowUpdating event, doesn't work as all samples say it should do. All samples of course assume you're doing everything in your page, but I have to do everything in my code-behind, because on forehand I don't know.

  4. Nov 17, 2011. Introduction Visual Studio allows developers to quickly put together a WebForms page simply using drag and drop options from the Visual Studio editor. Binding form controls is mostly a simple matter of attaching a DataSource and setting your controls to reference the correct field in the DataSource.

  5. Nov 4, 2009. DataBinding in 2.0 and the RowUpdating event – Dennis van – For a while now I'm trying to figure out why my method, triggered by the GridView. RowUpdating event, doesn't work as all samples say it should do. All samples of course assume you're doing everything in your page, but I.

  6. Apr 22, 2006. 2.0 GridView control allows us to quickly edit and delete records. However, most of the real world cases call for validating the data being edited or deleted. There can be several approaches taken for validating data. This article explores some of them viz. Client side validation using validation.

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