WPF - How to get all checked selected items from Listview?

Question

Hello everyone,

 

I have Listview items with checkboxes and image buttons. Please find the screen show from below url.

 

 

 

I want two scenario...

1) After select one row, then click on fist image button - want to get one row listview details in code behind (Now it's happening). Please find the screen show from below url.

 

 

 

2) After select one or more checkboxes then click on the second image button - want to get whole checked items from the listview. Please find the screen show from below url.

 

 

 

But after applying this code not getting all checkbox selected items. 

<GridViewColumn>
                                           <GridViewColumn.CellTemplate>
                                               <DataTemplate>
                                                   <CheckBox Tag="{Binding UserId}" Checked="CheckBox_Checked" Unchecked="CheckBox_Unchecked" />
                                               </DataTemplate>
                                           </GridViewColumn.CellTemplate>
                                       </GridViewColumn >

 I know this is because of not using this code inside the checkbox shown below. 

<CheckBox Tag="{Binding UserId}" Checked="CheckBox_Checked" Unchecked="CheckBox_Unchecked" IsChecked="{Binding RelativeSource={RelativeSource AncestorType=ListViewItem},Path=IsSelected}" />

But I don't want this code because after implementing this code, then click on the listview's row automatically selecting checkbox too. 

foreach (DocumentsUser item in listView1.SelectedItems) /*After select all check-boxes, then want to get all listview items here.*/
{

}