Updating database with datagrid


The way the architecture works with the Data Adapter is that you can make any changes you want to the filled Data Set, and it won't affect the database until you call the Update method.When Update is called, the Data Adapter will attempt to execute each query (UPDATE, INSERT, DELETE) on every row of the Data Set that has been updated, inserted, and deleted.For example, if you call Delete on a row on the Data Set, then when Update is called on the Data Adapter, the Delete Command of the Data Adapter will be called using the particular row in the Data Set.Note: Keep in mind that this Update is different than a SQL UPDATE statement.To insert, update, and delete data using a Data Adapter, you create an Ole Db Command object with INSERT, UPDATE, and DELETE statements and set the Insert Command, Update Command, and Delete Command properties of the data adapter to Ole Db Command.You can avoid building Command objects manually by using Command Builder.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.The Add New method of the Data Table adds a row to a Data Table.



To save data to the data source, you need to call the Data Adapter's Update method.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 In this example, I'll show you how to add edit, and remove, data from the Northwind database.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. I'll display the result of the Customers table in a Data Grid after adding, updating, and deleting data from the table.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.



Updating database with datagrid comments


  • C# - DataGridView to Update database - Stack Overflow profil de paulette60

    paulette60

    DataGridView to Update database. update each row of the edited column in my database based on my datagrid. Updating Datagridview values into database. 792.…
  • Updating SQL database table using WPF datagrid - Stack Overflow profil de paulette60

    paulette60

    I'm new to WPF and I'm trying to have a datagrid automatically update a table in a local SQL database when a user edits it. I feel like I'm close as I've gotten the insert to work, but I can't fig.…