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WPF DataGrid控件 - 在数据库中插入新行 [ ^ ]

WPF DataGrid控件 - 执行更新和删除操作 [ ^ ]

WPF数据网格更新，插入和删除操作 [ ^ ]

用于插入，更新和删除记录的WPF GridView示例 [ ^ ]

使用LINQ to SQL类在WPF DataGrid中显示/删除/编辑数据 [ ^ ]

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Follow these articles to do that:
WPF DataGrid Control – Insert New Rows in Database[^]
WPF DataGrid Control - Performing Update and Delete Operations[^]
WPF Datagrid Update, Insert and Delete Operations[^]
WPF GridView Sample To Insert, Update, and Delete Records[^]
Show/Delete/Edit data in WPF DataGrid using LINQ to SQL Classes[^]