If no match is found, an Invalid Operation Exception exception is thrown.If a match is found, it then looks for matching parameter names.The object that contains the original data is passed as a parameter to the Update method.The original data must be passed to the database so that it can be used to check whether the data has been modified by another process.The project files are also attached with this article so please feel free to download them.As you can see in the image above our Grid View contains five columns.If the method is static (Shared in Visual Basic), the business object is never created and you cannot handle the Object Created, Object Creating, and Object Disposing events. If a parameter in the Update Parameters element is found with the same name as a parameter that is already in the collection, the existing parameter is modified to match the parameter that is specified in the Update Parameters element.
If the business object implements the IDisposable interface, the Dispose method is called before the object is destroyed. Next, the parameters that are listed in the Update Parameters element are added.(For more information, see the preceding section.) The Object Data Source control then attempts to find a method to call.First, it looks for one or more methods with the name that is specified in the property.How do I stop the application from stopping once the exception has been called and carry on. event is raised when a row's Update button is clicked, but before the Grid View control updates the row.
Finally, you can programmatically add and remove parameters in the Updating event, which occurs before the Update method is run.