WPF中表格控件DataGrid的数据源与DataTable互相赋值拷贝

1. 将DataTable中的数据复制到DataGrid的数据源ItemsSource

DataTable dt = new DataTable();
//id_dataGrid_record为表格控件DataGrid
id_dataGrid_record.ItemsSource = dt.DefaultView;

2. 将表格中数据复制到DataTable

DataTable dt = ((DataView)id_dataGrid_record.ItemsSource).Table;