Hashtable ht = new Hashtable();
ht["joe"]="Test1";
ht["john"]= new System.Diagnostics.Process();
ht["epsilon"]=Double.Epsilon;
ht["pi"]=3.14159;
ht["2004-07-10"]= new System.Timers.Timer(1000);
ArrayList kList = new ArrayList();
foreach (object obj in ht.Keys)
{
kList.Add(obj);
}
foreach (object k in kList)
{
ht[k]="blabla"; // all values will be strings set to "blabla"
}