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Asp gridview rowupdating validation

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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.

There can be several approaches taken for validating data. For our example we are going to use Customers table of Northwind database. Open its smart tag and choose "Configure Data Source" option to start Configure Data Source wizard.

w=800" src=" w=800&h=279" alt="Email Validation Failed Alert" width="800" height="279" class="size-full wp-image-350" srcset=" w=710" src=" w=800" alt="Grid View on Browser" class="size-full wp-image-345" srcset=", w=800" src=" w=800&h=115" alt="First Row in Edit Mode" width="800" height="115" class="size-full wp-image-346" srcset=" w=800" src=" w=800&h=355" alt="Update Button not working if Validation Fails" width="800" height="355" class="size-full wp-image-348" srcset="

Inside the loop, a check is made to find whether the Cell contains a Text Box control.

(Switch to the Visual Basic tutorial.) In this tutorial, we'll see how easy it is to add validation controls to the Edit Item Template and Insert Item Template of a data Web control, to provide a more foolproof user interface.

A Grid View Update Event Args object is passed to the event-handling method, which enables you to determine the index of the current row and to indicate that the update operation should be canceled.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.If a user makes a data-entry mistake—such as omitting the Product Name field or entering an invalid value for Units In Stock (such as -50) —an exception will be raised from within the depths of the application architecture.Change the Command Name on 'button Update' from 'Update' to something like 'rename'. You can then add some code in the Row Command event to handle the validation and updating of record e.g.event is raised when a row's Update button is clicked, but before the Grid View control updates the row.On the first step of the wizard click on "New Connection" button to open a dialog as shown in Figure 1.