How can I get the name only to show in the MessageBox using C# windows form .NET framework?-CodePudding

I have already a class that contains name and id and I'm also using lists method and including the name and id of each student.I'm also selecting a course from the combo box and selecting an index from the list box that contains names and id. The i.Name is generating an error, I have also tried writing All students.SelectedItem instead of i.Name ( That worked but It showed the name and id ) attached below is the screenshot of that [![enter image description here][1]][1] This is my code below

 if (comboBox1.SelectedIndex != -1 && Allstudents.SelectedIndex != -1)

        {

            var query3 = from i in prod
                         where i == Allstudents.SelectedItem
                         select i.Name;
            foreach(var i in query3)
            {
                var b = query3  ;
            }

            MessageBox.Show("The student"   i.Name  
                "Has registered in the course"   comboBox1.SelectedItem);

How Can I only show the name ? [1]: