Updating multiple columns of a table
Updating multiple columns of a table - Sex chat girl butterfly
The returning clause retrieves the rows affected by a DML statement.
For example, to let a visitor edit a database record you first need to let them choose which record to edit.
When editing with a Grid View we'll specified (as our's does), then the Grid View's smart tag will include a checkbox titled "Enable Editing." Check this checkbox to enable editing.
What checking this checkbox does is add a Command Field to the Grid View's field list.
A Sql Data Source control was added whose Insert Parameters referred to these controls.
The Web Form also included a Button whose method, thereby kicking off the inserting workflow.
With the Sql Data Source control's , and so forth). If you are configuring this information via the Update Query property from the Properties window, then your screen should look like the following: Select Command="SELECT [Product ID], [Product Name], [Products].[Category ID], [Category Name], [Unit Price], [Discontinued] FROM [Products] INNER JOIN [Categories] ON [Products].[Category ID] = [Categories].[Category ID] ORDER BY [Product Name]" Update Command="UPDATE [Products] SET [Product Name] = @Product Name, [Category ID] = @Category ID, [Unit Price] = @Unit Price, [Discontinued] = @Discontinued WHERE [Product ID] = @Product ID" Note that each parameter in the Update Parameters collection is a Parameter object.
Recall that when using manually-created Web Forms in the inserting and deleting scenarios, we would use Control Parameter objects that referenced the particular Web control that held the parameter's value. NET 2.0 introduced a number of new Web controls designed for accessing and modifying data. NET 2.0's data source controls make it possible to retrieve, insert, update, and delete data without having to write the tedious dedata access code that was so commonplace in ASP. Previous installments of this article series have looked at returning, inserting, and deleting data using the Sql Data Source control. These controls can work in unison with the data source controls to facilitate inserting, updating, and deleting data.These controls allow page developers to declaratively access and modify data without writing any code to perform the data access. In this article we will examine basics of using the Sql Data Source and Grid View controls to update records from a database.Likewise, the parameter values in the Astute readers will notice the similarity between the Access Data Source and Sql Data Source controls' inserting, deleting, and updating workflows.Regardless of what workflow is initiated, they all follow the same six steps: the firing of the appropriate pre-action event (, in the case of the updating workflow).Once they've selected this record, you need to show it's existing values in editable fields (textboxes, cehckboxes, and so on), let the user make any modifications, and then save them.