I am trying to fetch the selected value of the listbox. When I actually try LstGroup1.SelectedItem I get the value { BoothID = \"4\", BoothName = \"HP\" }
LstGroup1.SelectedItem
{ BoothID = \"4\", BoothName = \"HP\" }
Have you tried :
var Booth = (LstGroup1.SelectedItem); string ID=Booth.BoothID; string Name=Booth.BoothName: