在该行上选择ContextMenu MenuItem时，从DataGrid中获取选定行？ WPF C＃

Question

I am trying to get the selected row values when a row is right clicked and a contextmenu menuitem is selected. I am using DataTables to fill my datagrid. Here is how I fill the table:

MySqlDataAdapter da = new MySqlDataAdapter("SELECT id as ID, name as Group_Name,   order_ascend as Display_Order FROM groups", MyConString);
DataSet ds = new DataSet(); 
da.Fill(ds);
dg_unassigned.ItemsSource = ds.Tables[0].DefaultView;

Here is my code in trying to retrieve it:

Group group = (Group)dg_unassigned.SelectedItem;
MessageBox.Show(group.Name);

This is the error I get:

Unable to cast object of type 'System.Data.DataRowView'

Answer 1

You cannot get the selected row as a Group because you didn't set the itemsSource as a collection of Group (a List< Group> for example).

So in your case the .SelectedItem gives a DataRowView, you shoud write

DataRowView drv = (DataRowView)dg_unassigned.SelectedItem;

Then you can get a Group object this way:

Group group = new Group { Name = drv["Name"].ToString() };

I don't know how your table looks like, but you can access any field in your table with

drv["nameOfTheField"].ToString();

After that this code should work!

MessageBox.Show(group.Name);