how to show three members in every row from listview

If you look at the ListView methods you will see that the ListView.Add takes an object as input. Now if you put a single element such as a string into that ListView, it will always display that value. What do you get if you insert an object?

Answer: the namespace of the object. And this demonstrates that your object is getting it's ToString() method called.

So if you want to have 3 fields displayed in the ListBox, you put all three fields into a single object and override the ToString method.

For Example:

public class MyClass
{
    public string ClassName { get; set; }
    public int ClassLevel { get; set; }
    public string ClassGrade { get; set; }
    public override string ToString( )
    {
        return String.Format( "{0} {1}  ::  {2}", ClassName, ClassLevel.ToString( ), ClassGrade );
    }
}