How to retrieve selected values for selected items in a ListBox?

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傲寒 2021-01-25 07:23

I\'m populating a ListBox in a WinForms application, this way:

listBoxUsers.DataSource = ctx.Users.ToList();
listBoxUsers.DisplayMember = \"Name\";
listBoxUsers.


      
      
        
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                   轮回少年
                                             
                
                
                (楼主)
            
              
              
                2021-01-25 08:06
              

            
            
                        
Since you know the type of items, you can use such code:

var selectedValues = listBox1.SelectedItems.Cast().Select(x=>x.Id).ToList();




Side Note: The ListBox control lacks a GetItemValue method. A method which should work like GetItemText, but for getting values. In the linked post I shared an extension method to get the value from an item. Using that extension method you can get selected values independent from type of items:

var selectedValues = listBox1.SelectedItems.Cast