I've a sample below, the Grid View Template is bound to Category Name.On Row Updating is fired when the 'Edit' button is clicked. Is the data bound to the gridview, your gridview markup doesn't say that it is bound to Category Name. Specifies how data will be sent and received when reading and writing encrypted columns.
Using the Sql Data Adapter, you can fill a memory-resident Data Set that you can use to query and update the database.
Sql Credential provides a more secure way to specify the password for a login attempt using SQL Server Authentication.
The Sql Dependency object represents a query notification dependency between an application and an instance of SQL Server.
Describes the different SQL authentication methods that can be used by a client connecting to Azure SQL Database.
For details, see Connecting to SQL Database By Using Azure Active Directory Authentication.