怎么获取ListBox成员content的值?
this.txt_GetMessage.Text = "选中了:" + listBox1.SelectedItem.ToString();
this.txt_GetMessage.Text = "选中了:" + listBox1.Items[listBox1.SelectedIndex].ToString() ;
ListBoxItem item = listBox1.SelectedItem as ListBoxItem;
this.txt_GetMessage.Text = "选中了:" + item.Content;