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Rowupdating gridview newvalues empty

The properties are called logically New Values and Old Values.As Ordered Dictionaries are not so handy for processing, I will create two Hashtables and copy the data for both properties from Ordered Dictionaries to Hashtables.No more code is necessary for managing data and we can now comfortably start with the interface. There are several methods for achieving the same result.

This is because we didn’t binded our grid to a valid and well defined Data Source.Still there are a couple of tricks that we will see in the following lines.In order to start editing a certain row, we can choose the way we are going to start this action.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.Because of this, we have our edit controls in read only state.You can find on Devexpress support web site several issues that are speaking about this behavior and why of it. Define the following server side event: What we defined here is checking if the cells that are going in edit mode are the one we are aiming to put in edit (not the Name and Total columns) and if so we are setting a couple of properties.Just call Start Edit Row Java Script method that is defined on the grid (in this case I’m using s and not the Client Instance Name in order to access the grid methods, but here is basically the same) and pass the visible index of the row that we intend to put in edit mode.Kindly this even will provide us the visible index via the function parameter which will indicate the row that user double clicked.The database is part of the project and it will be automatically mounted by VS.You can change this easily be creating your own database and changing the connection string in the web config.

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  1. Apr 19, 2009. Finally, we'll handle the RowUpdating method to save the new values. Most of the automation that's provided by the GridView when bound using a DataSourceID is lost when manually databinding The original values are not available through e. OldValues. The new values are not available through e.

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