How do I return a random property of a class in vb.net?

Question

I have a class (card) with various properties. I also have another class (cardcollection) which is a collection of a bunch of objects of the type card. I use a for loop to display the text property of the class in a list box of each object of the type card class.

what i want to do is click a button and a text box changes to the text property of a random object within the cardcollection class.

if this is more than can be explained here then please give me the words i need to Google to do this. i know .net has things built in for randomization, i just don't know how to use it, or what it is called to research it.
thanks,

The code i use to view objects in the different objects of type "card" class; in a combo box, list box, and 3 text boxes. this part does not need randomization. another part of the app does.

Dim _cardcollec As CardCollection
For i As Integer = 0 To _cardcollec.Count - 1
Dim _card As Card
_card = _cardcollec.Item(i)

If Not cmbCategory.Items.Contains(_card.Category) Then
cmbCategory.Items.Add(_card.Category) 'adds catagories to combo box
End If
If _card.Category = cmbCategory.SelectedItem Then
lstCardList.Items.Add(_card)
End If
Next

Answer 1

//What you basically miss is getting a random number between 0 //and CardCollection.Count -1.

Random RandomObject = new Random();
int RandomIndex = Random.Next(0, _CardCollection.Count-1);

//You can this retrieve the your card object from the collection by //using
MyRandomCard = MyCardCollection[RandomIndex];

//play with your MyRandomCard instance now
......

Note: The sequence of values returned by the Random class are not truly random, because they're generated by a definite mathematical algorithm wherein the previously selected value is used in calculating the next number.

For More Info Check how to seed Random Numbers using the Random Class

Thank You