Question

I already bind a listview (grid) with hashtable, so how can I get items from there? Before using hashtable I just did ListViewA.SelectedItems; and I was getting the source.

Ir fails when I use two foreach loops:

dlstTemplates is my ListView in WPF

foreach (var group in dlstTemplates.SelectedItems) {   foreach (var Template in group)   {    } } 

Error 2 foreach statement cannot operate on variables of type ‘object’ because ‘object’ does not contain a public definition for ‘GetEnumerator’ D:\cs_InformeMedico\app\Template.xaml.cs 85 21 Demo.View

I found this on debugger:

-       dlstPlantillas.SelectedItems    Count = 1   System.Collections.IList {System.Windows.Controls.SelectedItemCollection} -       [0] {System.Data.Linq.SqlClient.ObjectReaderCompiler.Group<string,Demo.View.Plantilla>} object {System.Data.Linq.SqlClient.ObjectReaderCompiler.Group<string,Demo.View.Plantilla>} -       Non-Public members       +       items   Count = 97  System.Collections.Generic.IEnumerable<Demo.View.Plantilla> {System.Collections.Generic.List<Demo.View.Plantilla>}         key '101010112000'  string         System.Linq.IGrouping<K,T>.Key  '101010112000'  string -       Results View    Expanding the Results View will enumerate the IEnumerable    +       [0] {Demo.View.Plantilla}   Demo.View.Plantilla +       [1] {Demo.View.Plantilla}   Demo.View.Plantilla +       [2] {Demo.View.Plantilla}   Demo.View.Plantilla +       [3] {Demo.View.Plantilla}   Demo.View.Plantilla +       [4] {Demo.View.Plantilla}   Demo.View.Plantilla +       [5] {Demo.View.Plantilla}   Demo.View.Plantilla +       [6] {Demo.View.Plantilla}   Demo.View.Plantilla +       [7] {Demo.View.Plantilla}   Demo.View.Plantilla +       [8] {Demo.View.Plantilla}   Demo.View.Plantilla +       [9] {Demo.View.Plantilla}   Demo.View.Plantilla +       [10]    {Demo.View.Plantilla}   Demo.View.Plantilla -       Raw View         -       [System.Windows.Controls.SelectedItemCollection]    Count = 1   System.Windows.Controls.SelectedItemCollection +       [0] {System.Data.Linq.SqlClient.ObjectReaderCompiler.Group<string,Demo.View.Plantilla>} object {System.Data.Linq.SqlClient.ObjectReaderCompiler.Group<string,Demo.View.Plantilla>} +       Raw View                 IsFixedSize false   bool         IsReadOnly  false   bool 

So when group is a

{System.Data.Linq.SqlClient.ObjectReaderCompiler.Group<string,Demo.View.Plantilla>} object type 

Sorry Plantilla = Template, I traduce it for more understand

Answer 1

You don’t seem to be working with a collection in the second loop.
Maybe you wanted

foreach(var group in dlstTemplates.SelectedItems) {     foreach(var Template in groupCast.Templates)     {         //do stuff...     } } 

or somesuch.