For example, if the user attempts to update a product's price to a value that is more than twice its original value the code displays the message "You cannot change a product's price to more than twice what it was before" in a red font.This change of the Label's property to Red is remembered across postbacks.When we edit a row in our Grid View and press the “Update” button, at some time it’s received in the Row Updating method.But as I noted in the comments in that method, some collections that should contain the columns (names, old values and new values) are always empty. And the Row Updated method is never even touched!!! NET Forums that I need to use a Data Source control.That means that after a message is displayed in the Label control it remains displayed until the user performs another action that causes the message to be overwritten.The following screenshots show this shortcoming in action.Additionally, if there is a problem with the user's input when updating a product a message should be displayed.In particular, this demo's business rules and require that when updating a product the new product price cannot be more than twice the old price.
If the user next sorts or pages the CRUD grid or perform some other action that results in a postback, the Label control continues to display the message "Record deleted," which is now outdated.
For example a Sql Data Source, which is automatically added to your Web Form if you drag-n-drop your way around Visual Studio 2005.
The problem is, I’d very much like to do so, if ASP. But I can’t set a Data Source property or anything on the Sql Data Source!!! I probably have to read the cells on the Grid View of the selected row, find the controls, get the values from those and insert those into my Data Set.
This article examines these two approaches and includes a working demo available for download that highlights both approaches. On this page we would like to display a message when certain events transpire.
For example, whenever a user updates a record we want to display the message "The product Product Name has been updated." A similar message should be displayed when the user deletes a product.