Rowupdating event example
We first of all create a Stored Procedure that gets the Id of an employee as a parameter from the Grid View on whichever row the user clicked. In this event, first we get the datakey value that is the id of an employee of whichever row the user clicked and that id is passed as a parameter to the Stored Procedure. According to the above, in these three operations we use three events of the Grid View for each operation. On Row Deleting - can call registered event handlers" I couldnt figure out how to continue this thread, but the issues in it are related so i'm including it as a reference.
I have tried to add an event handler to the Row Updated event of my custom control but it is not called.Now we define a method for opening a connection with the relation database and returns a SQL connection object depending on the connection string that is passed as a parameter of the Sql Connection class constructor.Delete a Record We can delete a record from the database table by clicking on the delete button that is in the Delete column of the Grid View.Save all or press "Ctrl S" and hit "F5" to run the page, the page will look as in the following image: Click on "Edit the Grid View", it will display Textboxes in each cell as in the following image: Edit the value(s) here and click on the Update link, it will update all the data or to remove it click on the "Delete" link above the image shown.One note will be helpful for you, while describing Columns in Grid View if you are using a boundfield then create objects of the control using cells[index] in the rowupdateing event of Grid View, but if you are using controls itself like Label or textboxes etc then use Fincontrol("stringid").event handler, which means it will get called for every row.
It examines the command object and, if it is the same referenced object, it essentially rebuilds the object, thereby destroying your command text changes.
Here we can update Name, Emp_Code and Emp_Age fields depending on the Id field of the "EMPLOYEE" table.
Create SQL Connection We need a connection with a Microsoft SQL Server database so we can access data and perform an operation on it.
As you might have guessed this is not efficient while dealing with large number of rows.
Fortunately Sql Data Adapter allows you to execute updates in batches. number of rows to be treated as a single batch via Update Batch Size property.
One approach to solving this problem is to clone the command object so you have a different actual reference: This will work, but since the Command Builder is still connected to the Data Adapter, the Row Updating event will still fire and performance will be hit.