Rowupdating specified method is not supported

populated in Step 1 is populated directly from the database, meaning that the original values used by the Data Row are those that currently exist in the database, and not those that were bound to the Grid View at the start of the editing process.

Protected Sub Assign All Product Values( _ By Val product As Northwind Optimistic Concurrency.

Set various properties of the Bound Fields as shown in the following table: Here, we call Bind Grid() method if the web form is being served as a result of first request. Products Optimistic Concurrency Data Table = _ Adapter. Return Value Is Boolean Then Dim delete Return Value As Boolean = CType(e. Discontinued = discontinued End Sub _ Public Function Update Product( By Val product Name As String, By Val supplier ID As Nullable(Of Integer), _ By Val category ID As Nullable(Of Integer), By Val quantity Per Unit As String, _ By Val unit Price As Nullable(Of Decimal), By Val units In Stock As Nullable(Of Short), _ By Val units On Order As Nullable(Of Short), By Val reorder Level As Nullable(Of Short), _ By Val discontinued As Boolean, By Val product ID As Integer, _ _ By Val original_product Name As String, _ By Val original_supplier ID As Nullable(Of Integer), _ By Val original_category ID As Nullable(Of Integer), _ By Val original_quantity Per Unit As String, _ By Val original_unit Price As Nullable(Of Decimal), _ By Val original_units In Stock As Nullable(Of Short), _ By Val original_units On Order As Nullable(Of Short), _ By Val original_reorder Level As Nullable(Of Short), _ By Val original_discontinued As Boolean, _ By Val original_product ID As Integer) _ As Boolean 'STEP 1: Read in the current database product information Dim products As _ Northwind Optimistic Concurrency. From the end user's perspective, clicking on the Delete button for Chai Tea in the second browser window caused the screen to flash and, upon coming back, the product is still there, although now it's listed as "Chai" (the product name change made by the first browser instance). There will be no formatting for the numeric fields and no validation controls to ensure that the product's name has been supplied and that the unit price, units in stock, units on order, and reorder level values are both proper numeric values and are greater than or equal to zero.

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