Items not Visible in listview

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C#

Good Day ,
I have 2 windows forms (form_source and form_target) with listviews (lstviewSource and lstviewTarget) respectively. When the items from the "listviewSource" is selected it needs to be displayed on "lstviewTarget".I am cloning the items from the listview in "form_source" but it is not displaying on the listview on "form_target".

below is the code.... thanks in advance. :confused:

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method on form_target

public void CopySelectedItems(ListView _lstviewSource)
       {
           foreach (ListViewItem item in _lstviewSource.Items)
           {
               if (item.Checked)
               {
                 lstviewTarget.Items.Add((ListViewItem)item.Clone());
               }
           }
       }

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method on form_source

private void btnAddImages_Click(object sender, EventArgs e)
        {
            form_target myform = new form_target();
            myform.CopySelectedItems(lstviewSource);
            this.Close();
        }

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