var in c#

why does c# have a var keyword ?
if you answer because of linq- that would be partly correct
consider:

Type t = this.GetType();

PropertyInfo[] p = t.GetProperties();

var names = from nms in p select nms.Name;

in this case the var is not necessary

the following could be written

We need var in a case where we are using implicitly typed local variables:

this.listBox1.Items.Clear();

            Type t = this.GetType();

            PropertyInfo[] p = t.GetProperties();

            var names = from nms in p select new {Name = nms.Name,Typ =nms.PropertyType};

            foreach (var s in names)

            {

                this.listBox1.Items.Add(s.Name +" "+ s.Typ.ToString());  

            }

IEnumerable<string> names = from nms in p select nms.Name;