C# DataTable RowChanged ExampleUse the DataTable type and its RowChanged and AcceptChanges event handlers.
DataTable RowChanged. The DataTable type is intricate. It provides many methods, properties and event handlers. The RowChanged event handler helps us detect when something changes in a DataTable. There are some secrets to its use.
Example. This example program creates a DataTable with four columns and five rows. It then hooks up the RowChanged event handler. To add RowChanged, type the table.RowChanged part and then the += characters.
Then Allow Visual Studio to create a method: press tab twice. You can edit the contents of that method to perform nearly any action.
Caution You cannot change a DataRow within RowChanged. This is prohibited. In RowChanged we must check values or call other methods.
Output In the output, we see that table_RowChanged is triggered four times. It is called each time a cell in a row changes.
Info We changed the "Dosage" cell repeatedly on the rows. We print this in table_RowChanged.
AcceptChanges. One tricky aspect to using DataTable and monitoring for changes is calling AcceptChanges. In my testing, it is best to call AcceptChanges after adding rows. Do not call it excessively or changes may keep reappearing.
Summary. Code that handles DataTables tends to be complex. And it is often application-specific, tied to a certain database schema and platform. Events like RowChanged, and methods like AcceptChanges are sometimes helpful in monitoring mutations.