Hi friend,
I’m very new to C# and I need some important help from you.
That is, I wanna store value inside of array or array list that are inserted form text boxes. Finally I need to get sum of that stored value.
How I need to do this. Do not need to store in any database.
Thanks all

In C# an array is fixed so you cannot insert, unless you copy everything to a bigger array.
ArrayList has an insert method, look for it here.