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Gridview rowupdating validation

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A Sql Data Source control is configured as such when it has its method is invoked.From the Visual Studio Designer, the Grid View can be marked as editable by checking the "Enable Editing" checkbox in the Grid View's smart tag or by manually adding a Command Field to the Grid View whose event.This article is one in a series of articles on ASP. Some of these limitations were exhibited in the Updating Basics article when attempting to update a product's Category.In short, you had to modify the product's value from 1 to 4.NET 2.0: Working with Template Fields.) In order to customize the editing interface for a particular column in the Grid View we need to use a Template Field.This customization process involves the following steps: Two-way databinding is a specialized syntax that informs the Grid View to take a particular value from the editing interface and to associate it with a particular parameter in its data source control's Update Parameters collection. NET 2.0 introduced a number of new Web controls designed for accessing and modifying data. We then saw how the Grid View control can work in tandem with the Sql Data Source control to provide a simple web-based editing interface composed of textboxes for each data field.These controls allow page developers to declaratively access and modify data without writing any code to perform the data access. While this simplified interface enabled developers to create an editable interface with zero code and just a few clicks of the mouse, the interface is so simple that it is impractical for all but the most trivial scenarios.

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(For more background on Grid View Template Fields, see Grid View Examples for ASP.

It requires a little more effort, but in most cases these changes can be completed entirely through the Designer or the page's declarative markup.

In this installment we will extend the simplified editing interface from Updating Basics to include validation controls for the As we saw in the Updating Basics article, a Grid View can be made editable when it is bound to a data source control that has updating capabilities enabled.

There are two ways to specify two-way databinding: by manually entering it through the page's declarative syntax; or by using the Edit Data Bindings dialog box. To enter it through the Designer, go to the Edit Templates interface and select the appropriate template.

There should be just user input Web control from which the user's input is collected.