DataTable AcceptChanges

The DataTable’s AcceptChanges() method commits the changed done to the DataRow and the DataTable’s RejectChanges() method rolls back the changes done to the DataRow.

Now let us see with an example, on how the rowstate property gets affected by calling the AcceptChanges() method of the DataTable.

 Let us add a new row to a DataTable, and perform various operations on the row to observer the change in the RowState of the row.

// Fill the DataTable with your own logic

// Here we will fill the table by calling the Domain class.

clsEmployee objEmp = new clsEmployee();

DataTable dtEmployee = objEmp.GetEmployeeList();
DataRow drEmp;

//

// Add a new Row and perform data changes

drEmp = dtEmployee.NewRow();   // RowState - Detached

dtEmployee.Rows.Add(drEmp);    // RowState - Added

dtEmployee.AcceptChanges();    // RowState - Unchanged

drEmp["ID"] = 3134;            // RowState - Modified

dtEmployee.AcceptChanges();    // RowState - Unchanged

drEmp.Delete();                // RowState - Deleted

dtEmployee.AcceptChanges();    // RowState - Detached

gvEmployees.DataSource = dtEmployee;

Notice that, every time you call the DataTable’s AcceptChanges() method, the changes are committed to the DataTable and the RowState is reset to Unchanged.

The following are the changes of RowState of the DataRows in the DataTable, before and after calling the DataTable’s AcceptChanges() method.

RowState before calling AcceptChanges()	RowState after calling AcceptChanges()	Impact on the Row
Added	Unchanged	New row is commited to the DataTable
Modified	Unchanged	Data Changes to the row are committed to the DataTable
Deleted	Detached	Row is Permanently Removed from the DataTable

The AcceptChange() method can also be called on the individual DataRows in the DataTable, calling the DataTable’s AcceptChanges() method, will commit the changes of all the DataRows in the DataTable.

To know more on the DataTable’s RejectChanges() method, refer the post DataTable RejectChanges.


Related Posts
DataRow RowState
DataTable AcceptChanges
DataTable RejectChanges
Get new rows in a DataTable / DataGridView in C# Windows Forms
Get Modified rows in a DataTable / DataGridView in C# Windows Forms
Get Deleted rows in a DataTable / DataGridView in C# Windows Forms