Updating dataset from datagrid
Updating dataset from datagrid - Free mobile sexchat no registeration
To change an existing row's data, you can directly assign a row's value. Delete() In this example, I'll show you how to add edit, and remove, data from the Northwind database.
You can avoid building Command objects manually by using Command Builder.
This will fire the ‘Row Edit Ending’ event and the update will be completed.
In the preceding code, I created a data Grid View1_Row Header Mouse Click Event for updating and deleting the selected record.
As you can see from listing 5-48, I created a filled Data Set and created a new Data Row using the Data Table. After creating a Data Row, I set its column values and called the Data Adapter's Update method and displayed data in the Data Grid.
I added new rows to the Customers table with Customer Id, Customer Name, and Company Name (named Tst ID, Lana Jackob, and Mindcracker Inc., respectively). Adding data using a Data Adapter's Update method Listing 5-49 shows an example that edits row data.
Note: The Tables member of Data Set represents all Data Table objects attached to a Data Set. Adding a Data Row to a Data Table Dim row1 As Data Row = ds. To test this source code create a Windows application, drop a Data Grid, and three buttons- Insert Command, Update Command, and Delete Command to the form.
Listing 5-46 Creates a new Data Row, sets the data of Data Row members, and adds rows to the table using the Add method of Data Table. Listing 5-48 show the code on the Insert Command button-click event.
NET EF, select ‘Employee’ table created in SQL Server using the script.
This code first searches the selected Employee row using LINQ.
So the ‘if’ statement in the above code, will prevent the application from crashing, since the WPF Data Grid generates a blank row when the data is bound to it.
When the delete button is clicked, the row will be deleted from the database.
As you saw in the Data Table, Data Row, and Data Column sections at the beginning of this article, you can use the Delete method of a Data Row to delete a row.