Assigning a random number to an array List c#?

[aaronsaple]

please help, im trying to assign a random number variable which ive created called 'custID' in a Customer Class to an array list of customers called 'customerList' which is in the program.

How can I do this?
Any help is appreciated.

Thanks

[BigEd781]

First off, if you are trying to use random numbers to generate unique id's.. don't. Use a GUID.

Anyway, look at the Random class.

[ClassCoder]

  Random rnd = new Random();
            System.Collections.ArrayList rndID = new System.Collections.ArrayList();
            int numsID = 20;
            int minID = 1;
            int maxID = 100;
            for (int c = 1; c <= numsID; c++)
            {
                rndID.Add(rnd.Next(minID, maxID));
            }

[Chris_F]

  Random rnd = new Random();
            System.Collections.ArrayList rndID = new System.Collections.ArrayList();
            int numsID = 20;
            int minID = 1;
            int maxID = 100;
            for (int c = 1; c <= numsID; c++)
            {
                rndID.Add(rnd.Next(minID, maxID));
            }

I don't think you should be encouraging people to use ArrayList as it is deprecated. Generic List<> is strongly typed, has increased functionality and greater performance and memory usage. It's available on all versions of .NET since 2.0 I believe.

[ClassCoder]

I don't think you should be encouraging people to use ArrayList as it is deprecated. Generic List<> is strongly typed, has increased functionality and greater performance and memory usage. It's available on all versions of .NET since 2.0 I believe.

i agree with you .. i don't never use ArrayList in my applications .. i prefer using List<>,HashTable<,>,Dictionary<,>


when we use LINQ IEnumrable<>

[aaronsaple]

thanks for the feedback - i've been told to use array list so i'm guessing i have to.

I have an arraylist called customerList and all i want to do is give each of the customers a Random number

so that when i execute the command to display all the customers in that array, it displays its ID alongside each individual customer.

Ive researched GUID's and they would have been ideal but they are too long and Random numbers are sure to be fine as its just a mini project with a few customers in the array.