How To Get a Class Value From List Items Dynamically..?

ListItem l = new ListItem();
l.Attributes.Add("class", "1");
string classname = "";//I want get class value of 1
ListItem l1 = new ListItem();
l1.Attributes.Add("class", "2");
string classname1 = "";//I want get class value of 2

Mahendra
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