Gridview rowupdating oldvalues empty Singles verl
We need to attach the following method to the Row Updating event: What happens in this event is that a request for updating rows is sent.
We will receive the old values that (of interested updating columns) and the new one that were chosen by the user, in a form of Ordered Dictionaries, exposed by two properties in our event argument.
Still I will let you discover them and invent new ones.
We are going to make our row editable on double click and in order to achieve that we will write down a function (in Java Script) that is going to be associated to the grids client side event called Row Dbl Click. At first we will add in our ASPX file, inside the grid definition a new section that is called Client Side Events (as we already did for other controls) and it will look like: It is that simple!
Once Update Edit is called a callback will be generated and the Row Updating server side method will be executed, in which we will need to handle the persistence of the data.Last but not least you will need the 12.2.5 version of Dev Express ASP. If you do have a more recent version, upgrading the project should be easy.Check this post about how to get the Dev Express controls and on how to eventually upgrade the project At example you can add a Command Button in the grid itself or simply start editing let’s say on a row double click.There are also many other modes, you have rich client and server side methods in order to start editing one or more rows.
Still there are a couple of tricks that we will see in the following lines.